ANSI ASME B18 13 1M 2011

ANSI ASME B18 13 1M 2011

ANSI ASME B18 13 1M 2011

ANSI ASME B18 13 1M 2011
Screw and Washer Assemblies-SEMs (Metric Series)
American Society of Mechanical Engineers / 21-Oct-2011 / 36 pages
ISBN: 9780791833759

This ANSI ASME B18 13 1M 2011 Standard covers general and dimensional data pertinent to the various types of screw and captive washer assemblies, otherwise known as sems. (The word sems is a generic term applicable to screw and washer assemblies.

CONTENTS of  ANSI ASME B18 13 1M 2011
Foreword…. . . . . . . . . . . iv
Committee Roster…. . vi
Correspondence With the B18 Committee.. . . . . . . . . . . . . vii
1 Introduction…. . . . 1
2 General Data…. . . 12
3 Helical Spring Lock Washer SEMS…14
4 Tooth Lock Washer SEMS…. . . . . . . . 15
5 Conical Washer SEMS… . . . . . . . . . . . 15
6 Plain Washer SEMS… . . . . . . . . . . . . . 15

Figures ANSI ASME B18 13 1M 2011
1 Unthreaded Length on Screws With Machine Screw Thread Diameter–Pitch
Combinations… . . . . . . . . . . . . . . . 12
2 Conical Spring Washer Twist Test.. . . . . . . . . . . . . . . . 14
3 Unthreaded Length on Tapping Screws With Spaced Thread Diameter–Pitch
Combinations… . . . . . . . . . . . . . . . 15

Tables ANSI ASME B18 13 1M 2011
1 Dimensions of Helical Spring Lock Washers for SEMS With Machine and Tapping
Screws Having Machine Screw Thread Diameter–Pitch Combinations . . . . . . . . . . . . 2
2 Dimensions of Helical Spring Lock Washers for SEMS With Screws Having
Tapping Screw Thread Diameter–Pitch Combinations. . . . . . . . . . . . 3
3 Dimensions of Internal Tooth Lock Washers for SEMS. . . . . . . . . . . . . 4
4 Dimensions of External Tooth Lock Washers for SEMS. . . . . . . . . . . . . 5
5 Dimensions of Conical Spring Washers for SEMS.. 6
6 Dimensions of Plain Washers for SEMS.. . . . . . . . . . 7
7 Through-Hardened and Tempered SEMS.. . . . . . . . . 8
8 Examples of SEMS Product Data..11

Nonmandatory Appendices ANSI ASME B18 13 1M 2011
A Reference Information for Users of This Standard.17
B Plain Washers on Tapping Screws.. . . . . . . . . . . . . . . . 19
C The Relationship of This Revision to Previous Revisions of This Standard and to
ISO Standards… . . . . . . . . . . . . . . . 20
D Manufacturing…21
E Statistical Expression of Hardness.. . . . . . . . . . . . . . . . 22
F Recovery Test…. 23
G How SEMS Function… . . . . . . . . . . 24

ANSI ASME B18 13 1M 2011 Pdf