1、AMERICAN NATIONAL STANDARD Metric Hex Bolts ANSI -A B.18.2.3.5M -.4979 Government Key Words: Bolt, Hex-Metric FOR CURRENT COMMlnEE PERSONNEL PLEASE SEE ASME MANUAL AS-1 1 SECRETARIAT SOCIETY OF AUTOMOTIVE ENGINEERS THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS PUBLISHED BY THE AMERICAN SOCIETY OF MEC
2、HANICAL ENGINEERS United Engineering Center 345 East 47th Street New York, N. Y. 1001 7 ANSI B18.2.3.5M-79 26 APRIL 1979 ACCEPTANCE NOTICE This non-Government document was adopted on 26 April 1979 and is approved for use by the DoD and Federal Agencies. Metric hex bolts shall conform to this documen
3、t and Appendix JJI, which establishes standard items for Government application. Appendix 111, Tabie 4 shall be used for item selection in accordance with the part numbering system and size information contained therein. The indicated industry group has furnished the clearances required by existing
4、regulations. Copies of the document are stocked by DoD Single Stock Point, Naval Publications and Forms Center, Philadelphia, PA, 19120, for issue to DoD activities and Federal Agencies only. Contractors and industry groups must obtain copies directly from: The American Society of Mechanical Enginee
5、rs United Engineering Center, 345 E. 47th Street New York, NY IO01 7 or The American National Standards Institvtc 1430 Broadway, New York, NY I0018 Title of Document: Bolt, Hex - Mctric ANSI Document No.: ANSI B18.2.3.5M-1979 Date of Specific Issue Adopted: 26 April 1979 Releasing Industry Group: Th
6、e American Society of Mechanical Engineers Custodians: Army - AR Navy - AS Air Force - 99 Review Activities: Army - AV, MI, ER Navy - MC NSA - NS DLA - IS Military Coordinating Activit) Army -,AR . (Project 5306-0620) User Activities: Army - ME, AT Navy - SH Civil Agencies: GSA-FSS NOTICE: When reaf
7、firmation, amendment, revision, or cancellation of this standard is initially proposed, the industry group responsible for this standard shall inform the Military Coordinating Activity of the proposed action and request their participation. No part of this document may be reproduced in any form, in
8、an electronic retrieval system or otherwise, without the prior written permission of the publisher. Date of Issuance: August 31, 1979 CopyrightQ1979 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. ERRATA to ANSI B18.2.3.5M-1979 METRIC HEX BOLTS Page 3, Note 18,
9、change B1.13 to read B1.13M Page 5, in the standard shall be replaced with the second page of this errata Page 10, MATERIAL AND FINISH CODE, change to read: A - Steel w/Cadmium Plating per QQP-416, Type 11, Class 3 (5.1pm Plating Thickness), Property Class 10.9. B - Steel w/Zinc Plating per QQ-Z-325
10、, Type 11, Class 3 (5.1pm Plating Thickness), Property Class 10.9. THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS 345 East 47 Street, New York, N.Y. 10017 May 1981 AMERICAN NATIONAL STANDARD METRIC HEX BOLTS ANSI 618.2.3.5M-1979 NO TE NOTE 17.3 14 SEE PROPERfY CLASS AND MANU- FACTURERS IDENTIFICATION
11、SEE TO APPEAR ON TOP OF HEAD SEE NOTE 21 Table 1 Dimensions of Hex Bolts t E K R - ladius of Fillet B (Ref) D Nominal Bolt Dia and Thread Pitch M5 x 0.8 M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M14 x 2 M16 x 2 M20 x 2.5 M24 x 3 M30 x 3.5 M36 x 4 M42 x 4.5 M48 x 5 M56 x 5.5 M64 x 6 M72 x 6 M80 x 6 M90 x
12、6. M100 x6 K1 Nrench, Height ing Da Fillet rransi- tion Dia - Max 5.7 6.8 9.2 11.2 13.7 15.7 17.7 22.4 26.4 33.4 39.4 45.4 52.0 62.0 70.0 78.0 86.0 96.0 107.0 Head Height Lasic) Bolt Lengths 200 Thread Length - Width AtX- Corners Body Diameter Width ACT- Flats Bolt Lengths 125ano Q 200 22 24 28 32 3
13、6 40 44 52 60 72 84 96 108 124 140 156 172 192 212 17.3 Bolt Lengths 200 Dia and Thread Pitch Max .I5 x 0.8 10.58 ,110 x 1.5 8.58 .I8 x 1.25 6.19 .I6 x 1 5.48 .I12 x 1.75 12.70 .I1 4 x 2 14.70 .I16 x 2 16.70 A20 x 2.5 20.84 .I24 x 3 24 84 “130 x 3.5 30.84 J36 x 4 37 .OO 442 x 4.5 43.00 A48 x 5 49 .O
14、O “156 x 5.5 57.20 A64 x 6 65.52 A72 x 6 73.84 480 x 6 82.16 A90 x 6 92.48 dl00 x 6 102.80 - Min - 7.64 9.64 12.57 15.57 17.57 20.16 23.1 6 29.16 35.00 45.00 53.80 62.90 72.60 82.20 91.80 101.40 I 11 .oo 125.50 140.00 - - Min - 8.63 10.89 14.20 17.59 19.85 22.78 26.1 7 32.95 39.55 50.55 60.79 71.71
15、82.76 93.7 1 104.65 115.60 126.54 143.07 159.60 - - Max - 9.24 11.55 15.01 18.48 20.78 24.25 27.71 34.64 41.57 53.12 63.51 75.06 86.60 98.15 09.70 21.24 32.79 50.1 1 67.43 - Min I Max Max 2.4 2.8 3.7 4.5 5.2 6.2 7 .O 8.8 10.5 13.1 15.8 18.2 21 .o 24.5 28.0 31.5 35.0 39.2 43.4 5.7 6.8 9.2 11.2 0.2 0.
16、3 0.4 0.4 0.6 0.6 0.6 0.8 0.8 1 .o 1 .o 1.2 1.5 2.0 2 .o 2.0 2.0 2.0 2.5 16 18 22 26 30 34 38 46 54 66 78 90 102 - - - - - - 22 24 28 32 36 40 44 52 60 72 84 96 108 124 140 156 1 72 192 212 35 37 41 45 49 53 57 65 73 85 97 109 121 1 37 153 169 185 205 225 4.52 16.00 9.42 13.00 7.42 10.00 5.52 8.00 1
17、1.30 18.00 13.30 21 .OO 15.30 24.00 19.16 30.00 23.16 36.00 29.16 46.00 35.00 55.00 41 .OO 65.00 47.00 75.00 54.80 85.00 62.80 95.00 70.80 105.00 78.80 11 5.00 88.60 130.00 98.60 145.00 3.58 6.17 6.85 5.10 5.68 3.55 4.38 3.35 7.95 7.24 9.25 8.51 10.75 9.68 13.40 12.12 15.90 14.56 19.75 17.92 23.55 2
18、1.72 27.05 25.03 31.07 28.93 36.20 33.80 41.32 38.68 46.45 43.55 51.58 48.42 57.74 54.26 63.90 60.10 13.7 15.7 17.7 22.4 26.4 33.4 39.4 45.4 52.0 62.0 70.0 72.0 86.0 96.0 107.0 6.9 7 8 4.5 - 17.3 ;ee Notes De Note 2.2 of General Data. 14.57 15.00 9.42 10.58 410 x 1.5 12 17.32 I 16.46 6.85 1 6.17 26
19、1 32 I 45 5 AMERICAN NATIONAL STANDARD METRIC HEX BOLTS Table 2 Dimensions of Reduced Body Diameters Nominal Ds Bolt Dia and Thread Shoulder Diameter Pitch h M5 x 0.8 M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M14 x2 M16 x2 M20 x 2.5 M24 x 3 5.48 6.48 8.58 10.58 12.70 14.70 16.70 20.84 24.84 4.52 5.52 7.
20、42 9.42 1 1.30 13.30 15.30 19.16 23.16 Note: Shoulder is optional. Body Diameter Max I Min 7.26 7.04 8.86 10.95 10.68 12.77 12.50 14.77 14.50 18.49 18.16 22.13 21.80 ANSI 818.2.3.5M-1979 Lsh Shoulder Length Max I Min 8 .O 7 .O 9 .o 8 .O 11.0 10.0 13.0 12.0 Table 3 Length Tolerances I Nominal Length
21、M5 thru M8 to 50 mm over 50 to 80 mm 0.8 4.0 over 180 to 240 mm 2 .o over 120 to 180 mm 1.1 over 80 to 120 mm 1 .o over 240 mm 5 .O All tolerances are plus and minus Nominal Bolt Diameter M10 thru M16 I M20 and M24 I M30 and M36 I over M36 1.3 1.5 1.8 2.0 4.0 5 .O 2 .o 2.5 3 .O 3.5 4 .O 5 .O 3 .O 3.
22、5 4.0 4.5 6.0 6 .O - 4.5 6 .O 6 .O 6.0 6 .O 6 APPENDIX I BOLT STRAIGHTNESS REFEREE GAGE AND GAGING PROCEDURE The conformance of bolts to shank straightness or camber limitations set forth in the respective product standards shall be checked by using the gage illus- trated below in accordance with th
23、e following pro- cedure: Allowable total camber on the product to be in- spected shall be calculated by multiplying the speci- fied permissible camber per mm of length by the product length expressed as a one place decimal. The total camber thus derived shall be added to the specified maximum body d
24、iameter exclusive of allowance for swell or fin under head and the ad- justable rail of gage shall be adjusted to provide a parallel space between the rails equal to this distance by obtaining common readings on both micrometer heads. The adjustable rail shall then be locked in place by tightening s
25、ecuring screws. The product shall then be inserted between rails, excluding from the gage any permissible length of swell or fillet under the head. The product shall be rotated by hand through full 360 deg. Any inter- ference occuring between the product and the gage which is sufficient to prevent r
26、otation shall indicate excessive camber. TYPICAL STRAIGHTNESS GAGE y- ADJUSTABLE Y REVERSE READING MICROMETER HEADS 7 7 APPENDIX I I RECOMMENDED CLEARANCE HOLES FOR BOLTS Clearance Holes for Bolts T Nom Bolt Dia and Thread Pitch 5 X 0.8 M6 x 1 Ma x 1.25 M10 x 1.5 M12 x 1.75 M14 x 2 M16 x 2 M20 x 2.5
27、 M24 x 3 M30 x 3.5 M36 x 4 M42 x 4.5 M48 x5 M56 x 5.5 M64 x 6 M72 x 6 Ma0 x 6 M90 x 6 MlOO x 6 Dh-Clearance Hole Diameter, Basic Close Clearance 5.3 6.4 a .4 10.5 13.0 15.0 17.0 21 .o 31 .O 37.0 43.0 50.0 25.0 58 .o 66.0 74.0 82.0 93.0 104.0 Notes: preferred for general purpose applications, and sho
28、uld be 1. Normal Clearance. Normal clearance hole sizes are specified unless special design considerations dictate the need for either a close or loose clearance hole. 2. Close Clearance. Close clearance hole sizes should be specified only where conditions such as critical alignment of assembled par
29、ts,wall thicknessor other limitations necessitate use of a minimal hole. When close clearance holes are speci- fied, special provision (e.g., countersinking) must be pro- vided at the bolt entry side to permit proper seating of the bolt head. Normal Clearance (Preferred) 5.5 6.6 9.0 11.0 13.5 15.5 1
30、7.5 22.0 26.0 33.0 39 .O 45.0 52.0 62.0 70.0 78.0 86.0 96.0 107.0 Loose Clearance 5 .a 7.0 10.0 12.0 14.5 16.5 18.5 24.0 28 .O 35.0 42 .O 48 .o 56.0 66.0 74.0 a2 .o 91 .o 101 .o 112.0 specified only for applications where maximum adjustment 3. Loose Clearance. Loose clearance hole sizes should be ca
31、pability between components being assembled is necessary. ameters given in the table are minimum sizes. Recommended 4. Recommended Tolerances. The clearance hole di- tolerances are plus 0.2 mm for bolt diameter M5; plus 0.3 ameters M20 thru M24; plus 0.5 mm for bolt diameters M48 mm for diameters M6
32、 thru M16; plus 0.4 mm for bolt di- thru M72; and plus 0.6 mm for bolt diameters Ma0 thru M100. 8 APPENDIX II I Government Standard Items and Part Numbering System Note The Government encourages the general use of this appendix to achieve maximum parts standardization. This appendix establishes the
33、standard items for Government application selected from the possible variations of items within the scope of the standard and provides a part numbering system for identifica- tion and application in engineering documents. The following variations are standard: a. Diameter/Thread Pitch and Length Com
34、bina- tions-as specified in Table 4. b. Material-Steel, Property Class 10.9. c. Finish-Cadmium plating or zinc plating as coded in Part Numbering System. d. Special Features-drilled head or self-locking, as specified. The part number shall consist of the following ele- ment codes in the order shown:
35、 a. Document Identifier - ANSI Standard Number less decimal points. b. Material and Finish c. Nominal Diameter d. Nominal Length e. Special Features f. Special M10 Width Across Flats Size Note The Part Numbering System may also be used for non-standard diameter and length combinations. Quality Assur
36、ance Provisions: Quality assurance provisions shall be in accordance with FF-S-85 Screw, lap, Slotted and Hexagon Head. Packaging: Packaging shall be in accordance with PPP-H-1581, Hardware (Fasteners and Related Items), Packaging and Packing for Shipment and Storage of. 9 i 2 I- ; n a a n a t; 2 a
37、a 5 2 L 2 5 t; $ z n - 5 H W - I 0 I- 2 I I- 0 U W o 3 -I U E z W (3 W I I- o W (3 a a 3 8 f z W I- H Z a W 0 (3 W I I- w c 0 z W cn # 8 .- Y 0 -I W 4 o I I a m c 0 10 - omirul .mnsth - 8 10 12 14 16 20 25 30 35 40 45 50 55 60 65 70 75 80 100 90 110 120 1 30 140 150 160 200 180 220 240 260 300 - Tab
38、le 4 Metric Hex Bolts-Standard Sizes for Government Use Nominal Diameter and Thread Pitch 50.8 M90x6 1 M1wx6 M*0x6 2x6 Mea5 M56x5.5 M42x4.5 hl36x4 M30x3.5 MZOx2.5 M14x3 M16x2 M14r2 MlZx 1.75 MIOX 1.5 8 1.25 ysX 1 I 11 L1 ANSI B18.2.3.1M. METRIC HEX HEAD CAP SCREW FOR SELECTION WITHIN THIS AREA, USE SELECTION CHITERIA, APPENDIX 111, TABLE 8. 1 I 10110 12130 14150 16160 20160 24160 05300 06300 08300 10300 12300 14300 16300 20300 24300 STANDARD DIAMETER AND LENGTH COMBINATION 42090 LGq 561 20 721 50 Liz57 I 901 80 oozw 30300 36300 42300 48300 56300 64300 72300 80300 90300 00300 MOO 104
