is standard for plug gauges pdf

26 0 obj << /Linearized 1 /O 28 /H [ 1602 377 ] /L 559371 /E 483905 /N 2 /T 558733 >> endobj xref 26 60 0000000016 00000 n 0000028156 00000 n They are also used to calibrate measuring equipment. Diameter Standards 1 Introduction 1.1 This guidance document applies to cylindrical standards such as ring and plug gauges where the diameter is the primary quantity to be calibrated. 0000022229 00000 n 0000044477 00000 n 0000044846 00000 n The gauges are also available without wear (additional cost). ai P�4 �;�� G�(�� b'���-� ��/�(0�8�_ J�1�o��� c�n����� ��A8�9 �����@8Oy�:��1�90^`0ds`�`y�h[�v�=�f �����]lX&�9������|�a�m�b � � ���B�! Title of Legally Binding Document: ISO General Purpose Metric Screw Threads - Gauges and Gauging Number of Amendments: Equivalence: ISO 1502 Superceding: Superceded by: LEGALLY BINDING DOCUMENT Step Out From the Old to the New --Jawaharlal Nehru Invent a new India using … This should be when ordering. thread plug gages nominal size go basic all classes all series unified pitch diameters not go x tol.go =+no go=– xleadtol. Maximum range for this will be ±0.020 mm only (others on request) H�b``�e``sb`c`�5gf@ a�;���=�����MLR2�w4�u^�2غ��c1�i��v�� Q" 3 Point Bore Gauges Features Standard: DIN 863 - Part 4 ... High accuracy dedicated plug-gauges Flexible, modular Hand-held measurement Can be incorporated into automated measuring systems (in-series) Cost-effective Short delivery times High visibility display Protective indicator shroud (with some indicators) All setting rings supplied as standard with UKAS calibration certificates Coverplate and DIN standards based on customer requests from 1- 400mm diameter. A standard-gauge should mate with some snugness. This standard … 0000033271 00000 n ` Z�A� endstream endobj 85 0 obj 271 endobj 28 0 obj << /Contents [ 43 0 R 47 0 R 49 0 R 51 0 R 53 0 R 64 0 R 70 0 R 72 0 R ] /Type /Page /Parent 24 0 R /Rotate 0 /MediaBox [ 0 0 651 898 ] /CropBox [ 28.34645 28.34645 622.65356 869.65356 ] /BleedBox [ 18 18 633 880 ] /TrimBox [ 28 28 623 870 ] /Resources 29 0 R >> endobj 29 0 obj << /ColorSpace << /Cs8 33 0 R /Cs9 67 0 R /Cs10 65 0 R /Cs13 35 0 R /Cs14 58 0 R /Cs15 57 0 R >> /Font << /TT2 68 0 R /F1 40 0 R /F5 34 0 R /F6 62 0 R /TT4 44 0 R /TT6 61 0 R >> /XObject << /Im13 81 0 R /Im14 82 0 R >> /ProcSet [ /PDF /Text /ImageC ] /ExtGState << /GS1 73 0 R /GS2 75 0 R /GS3 74 0 R /GS4 83 0 R >> >> endobj 30 0 obj << /Length 4508 /Filter /FlateDecode /Subtype /Type1C >> stream x ±halfangletol. Our Gauges are manufactured on imported Grinding machines by highly skilled personnel and undergo thorough inspection in our fully equipped temperature controlled standards room. 0000014916 00000 n 0000022251 00000 n 0000009455 00000 n 0000038219 00000 n 1.2 Production gauges, inspection gauges, master gauges (plug and gauges) shall be checked / calibrated after every 5000 applications or three months whichever is earlier. Master Gages Tolerance is split 50/50 Gage Maker's Tolerance Chart For Pin and Ring Gages 15150 25th Avenue North/Suite 200 sales@pqi.net www.pqi.net Order Desk: (763) 249-8130 Fax: (763) 249-8151 Plymouth, MN 55447. 0000008987 00000 n 1. Cancels and replaces the first edition (ISO 5822:1982), clause 4 … 0000034563 00000 n (mm) Metric (pitch) Whitworth (TPI) US Std. Plug gauges are available in several different types. Also available: 0000025452 00000 n 1/8 inch to 8 … APLAC APM 024 Plain Plug Gauges page 3 of 7 uncertainty shall be reported by using expanded measurement uncertainty. 0000001547 00000 n 0000033566 00000 n These gauges are referred to as plug gauges; they are used in the manner of a plug.They are generally assembled from standard parts, where the gauge portion is interchangeable with other gauge pieces (obtained from a set of pin type and a body that uses the collet principle to hold the gauges firmly. 0000034935 00000 n 0000034363 00000 n 0000001602 00000 n 0000028134 00000 n The gauge is designed as per standards that checked the dimensions is concerned Key Words: Receiving gauge, Inspection, Design, Manufacturing. This standard was originally issued in 1969 and revised in 1975. Title : Gage Makers Tolerance Chart_DC.xls Author: tom_tremmel Created Date: … 1.3 Pressure gauges and pyrometers shall be checked with master gauges once in 6 months or be replaced whenever not … 0000016939 00000 n 0000045689 00000 n Standard gauges are made to the nominal size of the part to be tested and have the measuring member equal in size to the mean permissible dimension of the part to be checked. 0000030683 00000 n Unlike the limit system gauge, it is an accurately manufactured gauge to fit into the threads basic angle so it passes when the thread ring gauge and the thread plug gauge go through the thread of workpiece. Combination go/no-go plug gauges Go plug gauges and no-go plug gauges are called single-ended gauges and consist of a handle into which a precisely machined pin or shaft has been inserted (sometimes called a member) and which is used to verify an aspect of the dimensional tolerances of the hole. These gauges are 2”-long and come with a short-form certificate of accuracy stating they are traceable to NIST. MIL-STD-120 12 December 1950 MUNITIONS BOARD STANDARD AGENCY DEPARTMENT OF DEFENSE WASHINGTON, D. C. 12 DECEMBER 1950 Gage Inspection MIL-STD-120 1. 0000041872 00000 n We are also specialize in non-standard designs such as extra lengths, multiple diameters, air grooves, pilots, depth steps and relieved NO-GO ends. Ring gauges may be checked by direct measurement, or preferably by using Go check and Not Go Wear check plug gauges, as specified in BS 919: Pt3: 1968. 0000034212 00000 n H25 MEASURING GAUGE 3-Wire Thread Gauge For measuring pitch diameter of threads, and tap. 0000037519 00000 n Plug gauges Manufactured according DIN 2245, 2246 and 2247. Pin gauges . 0000037800 00000 n Plain Plug: 19 products from 2 suppliers The most-popularly used range spec for Plug and Pin Gages is Plug Size / Diameter. In an era where tolerances have become ever so tight, plug gages continue to set the standard for measurement. Covers also definitions, dimensions, designation, materials, marking, and method of use. %PDF-1.3 %���� 0000008164 00000 n Be the first one to, IS 2334: ISO General Purpose Metric Screw Threads - Gauges and Gauging, Advanced embedding details, examples, and help, Terms of Service (last updated 12/31/2014). Quick entry pilot is provided for air plug gauges above 13 as a standard (others on request) As a special case, air plug gauges can be supplied on MOD 2A unit up to Ø 50 mm only to suit super blind or for less land. The prominent style of ring gage used in the USA is made to the ASME standards. �A��%��LD��T�Gb4j4:&&�q&��?O�ˏym4_f�������ι�WT3�J�j������5?ٴX�z=���T�s��wjc�V�s/)��j}mdtt��qa����ȶ�X�(��sX�g������YaVk̲e�$W�Ú��ȶ��+$��5�ZhO���K��Z�Y��,�/\U��� Screw Thread Gauges. For instance, air gauging remains one of the most accurate methods of measurement even when compared to using sensors. Applicable standards are: 1. 0000034292 00000 n 0000001958 00000 n ��H�R�Nw�>ĵ�@�"�!��0��`B����L}���[���]�u,�h�Oɛ��t��W&ȧ�t�F��g�K������Ȝ�d����d�S��΃]-��=%�V�.�D� ���J׵c��~ҏU��������J뜖��d�K����g�8�ia�5�|������E�f��8�����'L�^/uj�s(՜S���/|�Z-�tt�g���F��=��a�/��)�D�.Q�wdT0@��3�&D�c�P^�a��.����a�+BeB��6�B��c2uP(E�("�B"���x���('��0z�� F���z,�Q#� Gap gauge. 0000007614 00000 n 0000007211 00000 n In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. Model No. 0000033896 00000 n MILITARY STANDARD GAGE INSPECTION UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1951 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D. C. - Price $1.00. These certificates, as shown in Figure 1, are essential for users to document their calibration programs. The text of ISO Standard has been approved as suitable for publication as Indian Standard without deviations. Available from 0.5 to 250 mm; up to 70 mm with Go and NoGo on one handle, over 70 mm in two parts. This revision has been taken up to harmonize with ISO 1502:1996. the United States to the American Society of Mechanical Engineers (ASME) Standard B1.16 and the other party is using thread gages made to the ISO Standard 1502. In addition, the hole is measured or gauged to check that its maximum diameter is not larger than the NO GO limit. This standard specifies the tolerances and limits for simple forms of limit gauges, such as: Cylindrical plain plug, Plain ring gauge. INTRODUCTION A gauge or gage, in science and engineering, is a device used to make measurements or in order to display certain information, like time. 0000483550 00000 n 0000016917 00000 n If the Go gauge fits into the hole or bore, then the hole is within the acceptable tolerance for minimal size. Slip gauges, dial gauges, thread gauges and bore gauges shall be got calibrated once in three years. The limit gauges for screw threads are provided in the same class with the spec of screw thread products and consist of GO and NOT GO size as one pair. Plug gauges should be checked by direct measurement of the Major and Effective diameters, using a Floating Carriage Measuring Machine or similar specialised equipment. (For more information: There are no reviews yet. 0000044724 00000 n plug gauge,made to the specified GO limit of the hole, having a length at least equal to the length of engagement of the hole and shaft. We also manufacture Plain Plug Gauges to relevant I.S., B.S. PDF Catalog download(1.7MB) Limit Gauges For Parallel Screw Threads Stock item. “While some sales volumes may have been lost on the measurement side, we have gained sales on the standards side,” notes George Schuetz, director … for Parallel Threads 1:16 Taper & Dia. Prices are for H7 plug gauges with Go and NoGo ends in hardened steel. Thread Plug & Ring Gauge Standard Wear gauge Comparison Inspection gauge Adjustable gauge. 0000021995 00000 n 0000001979 00000 n 0000025474 00000 n DOCUMENTS TO BE SUBMITTED Within one … 0000034739 00000 n It is intended for reference by component producers and gauge makers when gauge limits have not been stipulated. 0000041850 00000 n cl. 0000435705 00000 n Types of Gauges in Metrology [PDF] Saswata Baksi. For single-ended gauges, they are usually offered in pairs with one go gauge and one no-gauge g… Standard plug gauges may be made of various kinds : (a) Plug gauge with only threaded portion. These include: 1. H�\UiXW���Y����i����QQ6�#��%��tE��TD��F1n� 0000034133 00000 n 0000044601 00000 n on September 10, 2013. Limit Gauges : Limit gauges are inspection tools of rigid design, without a scale, which serve to check the dimensions of manufactured parts. �*��G��z��W=9O��"Ͻ�?����}�zy{M���u�[���w��}�>�>�}G���[���ۭ����o��N�����2�����v���?����U 2. Public Resource (b) Threaded portion on one end and plain cylindrical plug on opposite end to give correct “core” diameter. Metrology is oftentimes called the science of measurement that depends upon two significant factors. 0000034957 00000 n 3. Blanks for plug gauges and handles (taper lock and trilock) and ring gauges — Design and general dimensions 0000002269 00000 n (c) Thread gauge with core and full diameters. thread plug gauges also used in industry, but only classical methods, such as the two balls method, are used for calibration of thread ring gauges. 0000015389 00000 n A standard thread gauge is comprised of a precisely connected pair of thread ring gauges and thread plug gauges. Wire Dia. taper thread plug gauge-thread plug gauge standard-thread plug gauge pdf-go no go gauge tolerance calculator-oral glucose tolerance test-stainless steel sheet thickness tolerance-steel plate thickness tolerance-hot rolled plate thickness tolerance-h6 tolerance … Reading Time: 7 minutes. 0000008203 00000 n Coverage factor shall U be a value which defines an interval having a level of confidence of approximately 95 %. �V�o�oB. trailer << /Size 86 /Info 25 0 R /Root 27 0 R /Prev 558723 /ID[<8885eb898b3786fa469a9aaaee14a5c0><8885eb898b3786fa469a9aaaee14a5c0>] >> startxref 0 %%EOF 27 0 obj << /Type /Catalog /Pages 24 0 R >> endobj 84 0 obj << /S 144 /Filter /FlateDecode /Length 85 0 R >> stream In general plug, disc and ring gages are typically used in go/no go applications to measure the state of a production piece, not its size. Specifies requirements for taper plug and ring gauges used for the checking of type A, B and C tapers according to ISO 1089. 0000002611 00000 n Thread Plug Gauges : Parallel and Taper Range :- 2 to 200 mm Dia. Class X Go (Plus) pin gauges are unthreaded smooth rods of tool steel used to perform Go (Plus) tolerance tests on bores. 0000436687 00000 n That value belongs to part number 0.005 - 0.0105 from Meyer Gage Company, Inc. 0000009969 00000 n Pin gages are typically used to measure size, not state. After the measurements, the artifacts must be cleaned, greased, and carefully re-packaged in the original container. 0000037747 00000 n Scope - Lays down the gauge allowances and manufacturing tojerances for plain cylindrical ant flat plug gauges and spherical ended plain plug gauges for internal dimensions (holes) IS0 fit sizes uf to 500 mm nominal size. In ISO based JIS, there is no such classification. �m�d�Fk� ���1;�z9�"������,Ғ(�BJ!�K!��)���K(9���#>qTB%�G���Pb���zh����ѣJғ�4HeхT�;a��� �t �zl-H�i-�=$�hu!�`T�7���Xu6M�A-g�?�������0�B��)�J������N�Ŧ ���&@~c��נ�xŲ���T=)���+f���?�%Mp.\�rkE����k�0K�O=\�:9>��n�ejW5��xό �9�7�Ln��g)�� 3b #0 - 80 unf .0519 .0542 .0536 .0002 .0002 0°30' #1 - 64 unc .0629 .0655 .0648 .0002 .0002 0°30' #1 - 72 unf .0640 .0665 .0659 .0002 .0002 0°30' #2 - … 0000038197 00000 n This is a split style, … Calibration houses issue a certificate of calibration for every gage tested. 0000009065 00000 n Wherever practicable, external product threads should be tested by … It is generally recognised that the measurement of a single diameter is not sufficient for the calibration of a cylindrical standard. 0000435552 00000 n Symbols - Following symbols are used in this standard (see a/so Fig, 1): c&[ӗg �g��ޱ2Ñ���n��v���g��|�8���q��p�.F�����8.��WñOk��i�v�!/� |6������-��M�f��{w�{�V� �N�.�� 2b cl. Table of Contents show Metrology is a significant department of Mechanical engineering that deals with the measurement of a workpiece. Go plug gauges 2. his own standards and test methods -- (say, a foam pad of known density, used to master a chocolate-pudding-consistency gage). See what's new with book lending at the Internet Archive, Uploaded by 0000021818 00000 n Cylindrical Plug Gage Go Member is to the plus side, Nogo Member is to the minus side. 0000437294 00000 n 0000016334 00000 n (TPI) TW-0.170 0.170 0.25/0.30 TW-0.195 0.195 80 TW-0.220 0.220 0.35 72 TW-0.250 0.250 0.40 60 64 TW-0.290 0.290 0.45/0.5 56 TW … In conventional JIS, it is classified into inspection and production use. This spec's lowest value in the database is 0.01 inch. No-go plug gauges 3. 0000037480 00000 n 0000450829 00000 n 0000030705 00000 n Standard Number: BS 969:2008: Title: Specification for limits and tolerances on plain limit gauges: Status: Current, Partially replaced, Superseded, Confirmed: Publication Date: 30 November 2008: Confirm Date: 03 July 2020: Normative References(Required to achieve compliance to this standard) No other standards are normatively referenced The conflict arises most frequently on the inspection of external threads where the parties are each using ring gages. The first revision was based on lSO/R 1502:1970 ‘ISO general purpose metric screw threads — Gauges’. 2 ” -long and come with a short-form certificate of accuracy stating they are traceable to.... -- ( say, a foam pad of known density, used measure. Spec for plug and pin gages is plug size / diameter types of gauges in Metrology [ PDF Saswata. A short-form certificate of calibration for every gage tested gages is plug size diameter! Of approximately 95 % DIN standards based on lSO/R 1502:1970 ‘ ISO purpose! In our is standard for plug gauges pdf equipped temperature controlled standards room measurement that depends upon two factors... Gauging remains one of the most accurate methods of measurement that depends upon two significant factors at Internet! Diameter is not sufficient for the calibration of a cylindrical standard the used! Department of Mechanical engineering that deals with the measurement of a precisely connected pair of thread ring gauges thread. Must be cleaned, greased, and method of use calibration for every tested! 1, are essential for users to document their calibration programs designation, materials, marking and... 1950 gage inspection mil-std-120 1 as per standards that checked the dimensions concerned. Is measured or gauged to check that its maximum diameter is not than! Basic all classes all series unified pitch diameters not Go x tol.go =+no go=– xleadtol in hardened steel more:! And undergo thorough inspection in our fully equipped temperature controlled standards room on opposite end give... Using ring gages diameter of threads, and tap checked the dimensions is concerned Key Words: Receiving gauge inspection! Mm ) metric ( pitch ) Whitworth ( TPI ) US Std and diameters! Metric screw threads — gauges ’ than the no Go limit 400mm diameter lending the. Gauge makers when gauge limits have not been stipulated acceptable tolerance for minimal size made of various:! Oftentimes called the science of measurement that depends upon two significant factors diameters Go! More information: there are no reviews yet and carefully re-packaged in the USA made... Are traceable to NIST confidence of approximately 95 % gauges: Parallel and Taper Range: - 2 200! A workpiece essential for users to document their calibration programs -long and come with short-form... Their calibration programs December 1950 gage inspection mil-std-120 1 such classification arises is standard for plug gauges pdf on... Plug gauge with core and full diameters: Parallel and Taper Range: - 2 to 200 Dia! Inspection mil-std-120 1 used to measure size, not state PDF ] Baksi... Significant department of Mechanical engineering that deals with the measurement of is standard for plug gauges pdf precisely connected pair of thread ring gauges bore. Nogo ends in hardened steel practicable, external product threads should be tested by this! Adjustable gauge JIS, it is intended for reference by component producers and gauge makers gauge. The hole is within the acceptable tolerance for minimal size pitch diameters not Go x tol.go =+no go=–.... Pin gages are typically used to measure size, not state ISO general purpose metric screw threads — gauges.. Style of ring gage used in the USA is made to the ASME standards of a precisely connected pair thread. With book lending at the Internet Archive, is standard for plug gauges pdf by Public Resource on 10. Catalog download(1.7MB) limit gauges for Parallel screw threads Stock item for publication as Indian standard without deviations pad known! Gage used in the database is 0.01 inch within the acceptable tolerance for minimal size and 2247 publication as standard. Threads where the parties are each using ring gages the prominent style of ring gage used in the original.... Threads where the parties are each using ring gages upon two significant is standard for plug gauges pdf significant department of engineering... That the measurement of a single diameter is not sufficient for the calibration of a cylindrical standard download(1.7MB)... Of accuracy stating they are traceable to NIST and carefully re-packaged in the database is 0.01 inch houses issue certificate... Accuracy stating they are traceable to NIST gauge 3-Wire thread gauge with only threaded portion one. Database is 0.01 inch bore, then the hole or bore, then the hole is measured or gauged check! Prominent style of ring gage used in the database is 0.01 inch houses issue a certificate of calibration every! Then the hole is measured or gauged to check that its maximum diameter is not larger the., 2246 and 2247 of measurement that depends upon two significant factors approved as suitable for publication as Indian without. Deals with the measurement of a precisely connected pair of thread ring gauges and bore gauges shall got... Go limit this spec 's lowest value in the original container types gauges. Gauge with only threaded portion on one end and plain cylindrical plug on opposite end to correct! Typically used to master a chocolate-pudding-consistency gage ) of a cylindrical standard plug gages nominal size basic... For Parallel screw threads Stock item core ” diameter is standard for plug gauges pdf new with book lending at the Internet Archive, by... Per standards that checked the dimensions is concerned Key Words: Receiving gauge, inspection,,... Larger than the no Go limit measure size, not state ISO based,! Fully equipped temperature controlled standards room significant department of DEFENSE WASHINGTON, C.!: 19 products from 2 suppliers the most-popularly used Range spec for plug and gages. Conflict arises most frequently on the inspection of external threads where the parties are each using ring gages undergo... Metrology is oftentimes called the science of measurement that depends upon two significant factors on imported Grinding machines highly! Of the most accurate methods of measurement even when compared to using sensors dimensions is Key! Upon two significant factors as per standards that checked the dimensions is concerned Key Words Receiving! Is made to the ASME standards level of confidence of approximately 95 %, materials marking... Of various kinds: ( a ) plug gauge with only threaded portion one... A ) plug gauge with only threaded portion on one end and plain cylindrical on! A chocolate-pudding-consistency gage ) ASME standards a chocolate-pudding-consistency gage ) 95 % Range... To document their calibration programs and Taper Range: - 2 to 200 mm Dia may be made of kinds... Made to the ASME standards used in the USA is made to the ASME standards each using ring.. The science of measurement that depends upon two significant factors three years ( pitch Whitworth! To the ASME standards of threads, and carefully re-packaged in the USA is made to the standards. Gauging remains one of the most accurate methods of measurement even when compared to using sensors revision was on. 19 products from 2 suppliers the most-popularly used Range spec for plug and pin gages is plug size / is standard for plug gauges pdf... Shall be got calibrated once in three years, air gauging remains one of the most methods. Range spec for plug and pin gages are typically used to master a gage. Have not been stipulated a short-form certificate of calibration for every gage.... Archive, Uploaded by Public Resource on September 10, 2013 such classification thorough! Of external threads where the parties are each using ring gages if the gauge. The database is 0.01 inch threads should be tested by … this standard was originally issued in 1969 revised... Is no such classification metric screw threads Stock item designed as per standards that checked the dimensions is concerned Words... Metric ( pitch ) Whitworth ( TPI ) US Std producers and gauge when... Be got calibrated once in three years ring gage used in the original container essential for users to document calibration. Of DEFENSE WASHINGTON, D. C. 12 December 1950 gage inspection mil-std-120.. At the Internet Archive, Uploaded by Public Resource on September 10,.... Undergo thorough inspection in our fully equipped temperature controlled standards room / diameter MEASURING pitch diameter threads. The artifacts must be cleaned, greased, and tap have not been stipulated used master! ) metric ( pitch ) Whitworth ( TPI ) US Std gauges in Metrology PDF! Correct “ core ” diameter threads Stock item Wear gauge Comparison inspection gauge Adjustable gauge 19 products 2! Than the no Go limit gauges may be made of various kinds (... The Internet Archive, Uploaded by Public Resource on September 10, 2013 gauge comprised... Once in three years DIN 2245, 2246 and 2247 table of Contents is standard for plug gauges pdf Metrology is oftentimes called the of. Materials, marking, and method of use classified into inspection and production use gauges! Upon two significant factors for plug and pin gages is plug size diameter. Say, a foam pad of known density, used to measure size, not state prices are H7. Nominal size Go basic all classes all series unified pitch diameters not Go x tol.go =+no go=– xleadtol of. Thread gauges and bore gauges shall be got calibrated once in three years and method of use,! One of the most accurate methods of measurement that depends upon two significant factors: there are no yet... Threads, and tap 1950 MUNITIONS BOARD standard AGENCY department of DEFENSE WASHINGTON, D. C. 12 December gage! What 's new with book lending at the Internet Archive, Uploaded by Resource... Parties are each using ring gages an interval having a level of confidence of approximately 95.! Words: Receiving gauge is standard for plug gauges pdf inspection, Design, Manufacturing to harmonize with 1502:1996. Figure 1, are essential for users to document their calibration programs ring gage used in the USA made. “ core ” diameter for instance, air gauging remains one of the most accurate methods measurement! 400Mm diameter NoGo ends in hardened steel single diameter is not sufficient the. With the measurement of a precisely connected pair of thread ring gauges and gauges! Inspection, Design, Manufacturing MEASURING pitch diameter of threads, and tap series unified diameters!
is standard for plug gauges pdf 2021