Skip Navigation Links
MenuExpand
ASSIST
   Data updated: 14 Oct 2026. Home |  About Quick Search |  ASSIST |  ASSIST Updates Document Details
Document ID:   FED-STD-H28       Scroll down to access document images
Spec/Std Sheet:  2

Overview
Title:  Screw-Thread Standards for Federal Services Section 2 Unified Inch Screw Threads- UN and UNR Thread Forms
Scope:  This section provides the standard for unified inch screw threads to be used by the Federal Services.
Status:  Active Document Date:  12-JAN-2024      
  Next Review Due:  09-JAN-2034
THDS Doc Category:   Federal Standard  

Responsibilities
Lead Standardization Activity:  GS  DLA Aviation - Richmond  
  Preparing Activity: GS8  DLA Aviation - Richmond
DoD Interest Level:  / Prepared by DoD activity
Coordination:  Full  
Army Custodian:  AR   US Army Combat Capabilities Development Command, Armaments Center  
Navy Custodian:  AS   Naval Air Systems Command  
Air Force Custodian:  19   Space Systems Command  
DLA Custodian:  GS   DLA Aviation - Richmond  

Revision History Click on column headings for a description of column content.
MediaDocument Part DescriptionDist StmtDocument DatePagesSize
Document ImageRevision B Notice 4 - ValidationA12-JAN-202412.0 KB
Document ImageRevision B Notice 3 - ValidationA27-FEB-201912.0 KB
Document ImageRevision B Notice 2 - ValidationA28-NOV-200612.0 KB
Document ImageRevision B Notice 1 - ValidationA27-SEP-200112.3 KB
Document ImageRevision B A20-AUG-1991742748.7 KB
Document ImageRevision A Notice 1 - ValidationA03-APR-198914.9 KB
Document ImageRevision A A20-APR-1984493164.8 KB

NOTE: It is recommended that you use Adobe Reader v7.0 or higher for optimal download performance; older versions should continue to work, but downloading large files may appear to take longer, so please be patient in those cases.

  About Quick Search  |  Contact Us  |  FAQ  |  ASSIST  |  Privacy and Security  |  Section 508 Compliance  |  Defense Standardization Program  
WARNING: UNAUTHORIZED ACCESS TO THIS UNITED STATES GOVERNMENT COMPUTER SYSTEM AND SOFTWARE IS PROHIBITED BY PUBLIC LAW 99-474 (THE COMPUTER FRAUD AND ABUSE ACT OF 1986) AND CAN RESULT IN ADMINISTRATIVE, DISCIPLINARY OR CRIMINAL PROCEEDINGS.