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ASME B18.13

2017 Edition, January 23, 2017

Complete Document

Screw and Washer Assemblies - SEMS (Inch Series)



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Product Details:

  • Revision: 2017 Edition, January 23, 2017
  • Published Date: January 23, 2017
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASME International (ASME)
  • Page Count: 30
  • ANSI Approved: Yes
  • DoD Adopted: Yes

Description / Abstract:

This Standard covers general and dimensional data pertinent to the various types of screw and captive washer assemblies, otherwise known as SEMS. SEMS products may include screws, tapping screws, or bolts in sizes No. 0 through 1⁄2 in. diameters in various grades and materials. The word SEMS is recognized in the United States as a generic term applicable to screw and washer assemblies. Also included in this Standard is Nonmandatory Appendix A illustrating the relative proportions of plain and conical washer SEMS.

NOTE: The word lock, which appears in the names of products in this Standard, is a generic term historically associated with their identification and is not intended to imply an indefinite fixity in attachments where the fasteners are used.