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New Reduced price! ASME B18.24-2020

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ASME B18.24-2020

Reference: M00052506

Condition: New product

ASME B18.24-2020 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products

standard by ASME International, 10/30/2020

Full Description

This Standard is intended to provide all users (manufacturers, distributors, design and configuration, parts control, inventory control, test and maintenance functions) with the capability to identify externally threaded, internally threaded, and non-threaded fastener products by a pre-selected order of coding as specified herein. The B18 PIN is a self-contained code, with distinct identification linkage to individual ASME B18 fastener product standards. The PIN code concept provides for direct traceability back to the applicable B18 product standard. In case of conflict with this document and B18 product standard, the B18 product standard shall take precedence. This Standard is not intended for use as a substitute for the correct usage of the B18 standards for fastener selection and specification. The PIN code is intended as an alternative to the plain text product callout as prescribed in the "Designation" or "Ordering" section of the source B18 product standard. The existence of a PIN code for B18 fastener description is not intended to imply that all products described are available.

A few B18 fasteners cannot be thoroughly identified using the 18 digit system defined in this standard. If the user does not find the PIN needed in the body of this standard consult the Appendix where special PIN systems have been created to specifically identify those items. If the sought after PIN for the desired B18 fastener is not in the Appendix, notice should be sent to the secretary of B18 so that the item can be addressed in the next revision of this standard.

Product Details

Published: 10/30/2020 ISBN(s): 9780791873885 ANSI: ANSI Approved Number of Pages: 190 File Size: 1 file , 1000 KB Redline File Size: 2 files , 9.1 MB

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Part Identifying Number (PIN) Code System Standard for B18 Fastener Products

AN A MERICAN NA TIONAL S T AND ARD

ASME B18.24-2020

(Revision of ASME B18.24-2015)

ASME B18.24-2020

(Revision of ASME B18.24-2015)

Part Identifying

Number (PIN) Code System Standard for B18 Fastener Products

AN AMERICAN NATIONAL STANDARD

Two Park Avenue • New York, NY • 10016 USA

Date of Issuance: October 30, 2020

This Standard will be revised when the Society approves the issuance of a new edition.

ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations are published on the Committee web page and under https://go.asme.org/InterpsDatabase. Periodically certain actions of the ASME B18 Committee may be published as Cases. Cases are published on the ASME website under the B18 Committee Page at https://go.asme.org/B18committee as they are issued.

Errata to codes and standards may be posted on the ASME website under the Committee Pages to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted.

The B18 Committee Page can be found at https://go.asme.org/B18committee. There is an option available to automatically receive an e-mail notification when errata are posted to a particular code or standard. This option can be found on the appropriate Committee Page after selecting “Errata” in the “Publication Information” section.

ASME is the registered trademark of The American Society of Mechanical Engineers.

This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large.

ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.

ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.

Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.

ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME procedures and policies, which precludes the issuance of interpretations by individuals.

No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise,

without the prior written permission of the publisher.

The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS

CONTENTS

Foreword vi

Committee Roster vii

Correspondence With the B18 Committee viii

1	Introductory Notes .......................................................	1
2	General Guidance ........................................................	1
3	PIN Code Structure.......................................................	2
Tables
1-1	Fastener Family and Type/Base PIN ....................................	4
2-1	Thread Type ...........................................................	25
2-2	Thread and Point Options for Tapping Screws ...........................	25
3-1	Inch Thread ............................................................	25
3-2	Inch Size ...............................................................	25
3-3	Metric Thread ..........................................................	26
3-4	Metric Size .............................................................	27
3-5	Miniature Screw Thread ................................................	28
3-6	Inch Tapping Screw Thread .............................................	28
3-7	Metric Tapping Screw Thread ...........................................	29
3-8	Inch Hex Socket Head Shoulder Screw Size .............................	29
3-9	Metric Hex Socket Head Shoulder Screw Size ...........................	29
3-10	Inch Spline Socket Set Screw Thread ....................................	29
3-11	Inch Trim Head Machine Screw Size ....................................	29
3-12	Inch Wood Screw Thread ...............................................	30
3-13	Inch Lag Screw Thread .................................................	30
3-14	Inch Rivet Size Weight .................................................	30
3-15	Inch Rivet Size Number ................................................	30
3-16	Inch Rivet Size 1 .......................................................	30
3-17	Inch Rivet Size/Length .................................................	30
3-18	Inch Pin Size 1 .........................................................	31
3-19	Inch Pin Size 2 .........................................................	31
3-20	Retaining Ring Size Number ............................................	31
3-21	Inch Retaining Ring Size ...............................................	33
3-22	Inch Washer Size 1 .....................................................	34
3-23	Inch Washer Size 2 .....................................................	35
3-24	Inch Washer Size 3 .....................................................	35
3-25	Inch Washer Size 4 .....................................................	36
3-26	Metric Washer Size 1 ...................................................	36
3-27	Metric Washer Size 2 ...................................................	37
3-28	Metric Key Size 1 ......................................................	37
3-29	Metric Key Size 2 ......................................................	38
4-1	Inch Length/Other .....................................................	38
4-2	Metric Length/Other ...................................................	40
4-3	Inch Miniature Screw Length ...........................................	41
4-4	Insert Length ...........................................................	42
4-5	Inch Pin Length ........................................................	42
4-6	Inch Eyebolt Full Thread Length ........................................	42
5-1	Material and Treatment: ASTM Material Specifications ..................	43
5-2	Material and Treatment: UNS Carbon and Alloy Steels ..................	82
5-3	Material and Treatment: UNS Heat and Corrosion Resisting Steels .......	88

iii

Material and Treatment: UNS Nonferrous Materials 93
Material and Treatment: SAE Material Specifications 96
Material and Treatment: ISO Material Specifications 97
Material and Treatment: IFI Material Specifications 98
Material and Treatment: B18.16.1M 98
Material and Treatment: B18.6.6 98

Plating, Coating, and Passivation: Plain, Unfinished 99
Plating, Coating, and Passivation: ASTM Finish Specifications 99
Plating, Coating, and Passivation: Government Finish Specifications 117
Plating, Coating, and Passivation: SAE Finish Specifications 118
Plating, Coating, and Passivation: ISO Finish Specifications 119

Plain: No Additional Features 120
Miscellaneous Features for Externally Threaded Fasteners 120
General Point Options 120
Features for Metric Flange Screws 120
Features for Metric 12-Spline Screws 120
Neck Options for Large Rivets 120
Cotter Pin Type 120
Pin Type 120
SEMs Washer Components 120
Wood Screw Thread Types 120
Miscellaneous Features for Socket Head Cap Screws 121
Self-Locking Elements for Set Screws 121
Thread Class for Track Bolts and Nuts 121

Alternate Points for Thumb and Wing Screws (ASME B18.6.8) 121

Nonmandatory Appendices

A	B18.24.1, B18.24.2, and B18.24.3 PIN Succession Instructions .............	123
B	B18.24.1, B18.24.2, and B18.24.3 PIN Succession Tables ...................	128
C	Part Identifying Number System for Bent Bolts per ASME B18.31.5 ......	172
Figures
A-1	Instructions ............................................................	124
C-1	Part Identification Number (PIN) System for Bent Bolts .................	173
Tables
B-1	Fastener Family ........................................................	128
B-2	Fastener Type: Externally Threaded .....................................	128
B-3	Fastener Type: Internally Threaded and Nonthreaded ...................	142
B-4	Thread Series: Externally Threaded .....................................	143
B-5	Thread Series: Internally Threaded ......................................	143
B-6	Inch Size: Externally Threaded ..........................................	143
B-7	Inch Size: Internally Threaded ..........................................	143
B-8	Metric Size: Externally Threaded ........................................	144
B-9	Metric Size: Internally Threaded ........................................	144
B-10	Inch Miniature Screw Size ..............................................	144
B-11	Inch Length: Externally Threaded .......................................	144
B-12	Metric Length: Externally Threaded .....................................	144
B-13	Inch Miniature Screw Length ...........................................	145
B-14	Length: Internally Threaded ............................................	145
B-15–B-133	Dimensions/Other Characteristics: Nonthreaded ........................	145
B-134	Material and Treatment A ..............................................	160
B-135	Material and Treatment B ...............................................	163
B-136	Plating, Coating, and Passivation .......................................	165
B-137	Additional Features: Externally Threaded ...............................	166
B-138	Additional Features: Internally Threaded ................................	166
B-139	Additional Features: Nonthreaded ......................................	166
B-140	Cross Reference: Table 2-2 Tapping Screw Point AB ......................	166

B-141	Cross Reference: Table 2-2 Tapping Screw Point B .......................	166
B-142	Cross Reference: Table 2-2 Tapping Screw Point BF ......................	166
B-143	Cross Reference: Table 2-2 Tapping Screw Point BP ......................	167
B-144	Cross Reference: Table 2-2 Tapping Screw Point BT ......................	167
B-145	Cross Reference: Table 2-2 Tapping Screw Point C .......................	167
B-146	Cross Reference: Table 2-2 Tapping Screw Point D .......................	167
B-147	Cross Reference: Table 2-2 Tapping Screw Point F .......................	167
B-148	Cross Reference: Table 2-2 Tapping Screw Point G .......................	167
B-149	Cross Reference: Table 2-2 Tapping Screw Point T .......................	167
B-150	Cross Reference: Table 2-2 Tapping Screw Point U .......................	167
B-151	Bridge to Table 3-6 for AB, B, BF, BP, BT ................................	167
B-152	Bridge to Table 3-6 for C, D, F, G, T .....................................	167
B-153	Bridge to Table 3-7 for AB, B, BF, BT ....................................	167
B-154	Bridge to Table 3-7 for D, F, T ..........................................	167
B-155	Bridge to Table 3-10 ....................................................	167
B-156	Bridge to Table 3-12 ....................................................	167
B-157	Bridge to Table 3-13 ....................................................	167
B-158	Cross Reference: Table 7-9 Washer Component 1 ........................	167
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