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   Data updated: 13 Feb 2026. Home |  About Quick Search |  ASSIST |  ASSIST Updates Document Details
Document ID:   MIL-DTL-18240       Scroll down to access document images

Overview
Title:  Fastener Element, Self-Locking, Threaded Fastener, 250 Degrees F Maximum
Scope:  This specification defines the requirements for self-locking elements for use in externally threaded fasteners such as bolts and screws to be used in fasteners with either UNC, UNJC, UNF, UNJF, UNRC or UNRF threads and where the temperatures will not exceed 250 deg. F.
Status:  Active Document Date:  04-SEP-2019      
  Next Review Due:  02-SEP-2024
53GP Doc Category:   Detail Specification  
Qualification  

Responsibilities
Lead Standardization Activity:  GS  DLA Aviation - Richmond  
  Preparing Activity: SH  Naval Sea Systems Command (Ship Systems)
Coordination:  Full  
Army Custodian:  AV   Combat Capabilities Development Command, Aviation and Missile Center  
Navy Custodian:  SH   Naval Sea Systems Command (Ship Systems)  
Air Force Custodian:  11   Air Force Life Cycle Management Center - Aircraft Systems  

Amendments to military specifications or specification sheets issued after August 1, 2003 are incorporated in the modified document.
Revision History Click on column headings for a description of column content.
MediaDocument Part DescriptionDist StmtDocument DatePagesSize
Document ImageRevision F Notice 1 - ValidationA04-SEP-201912.0 KB
Document ImageRevision F Amendment 1 A13-MAR-200014.1 KB
Document ImageRevision F A02-JUN-199724118.5 KB
Document ImageRevision E A01-DEC-1989201562.0 KB
Document ImageRevision D Amendment 1 A15-AUG-1978126.5 KB
Document ImageRevision D A25-FEB-197219672.9 KB

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