PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27977-21BFastener,snap

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5325-00-014-8438 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-014-8438 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-014-8438. Primary manufacturer part number: MS27977-21B.
Features
  • Fastener,snap — FSC 5325
  • Stud Overall Length: 0.766 INCHES NOMINAL IN
  • Socket Overall Height: 0.375 INCHES NOMINAL IN
  • Material: COPPER ALLOY SOCKET
  • Snap Fastener Clinch Plate Style: CLINCH PLATE
  • Thread Size and Series/type Designator: 0.190-32 UNF
  • Snap Fastener Stud Style: STUD
  • Body Length: 0.250 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Socket construction
General Description

The Fastener,snap, cataloged under National Stock Number 5325-00-014-8438, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-014-8438
Primary Part NumberMS27977-21B
Item NameFastener,snap
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Stud Overall Length0.766 INCHES NOMINAL IN
Socket Overall Height0.375 INCHES NOMINAL IN
MaterialCOPPER ALLOY SOCKET
Snap Fastener Clinch Plate StyleCLINCH PLATE
Thread Size and Series/type Designator0.190-32 UNF
Snap Fastener Stud StyleSTUD
Body Length0.250 INCHES NOMINAL IN
Nondefinitive Spec/std Data1 STYLE
Socket Length0.875 INCHES NOMINAL IN
Socket Prong Length0.500 INCHES NOMINAL IN
Stud Base Width Across Flats0.250 INCHES NOMINAL IN
Plate Width0.812 INCHES NOMINAL IN
Socket Width0.750 INCHES NOMINAL IN
Stud Shank Length0.375 INCHES NOMINAL IN
Plate Length0.938 INCHES NOMINAL IN
MaterialCOPPER ALLOY STUD
Stud Retention MethodSCREW BASE
Snap Fastener Socket StyleSOCKET
Plate Overall Height0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5325-00-276-4934 INTERCHANGEABLE
Stud,snap Fastener
5325-00-285-4751MS27983-3&-4 INTERCHANGEABLE
Fastener,snap
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-286-9554 INTERCHANGEABLE
Socket,snap Fastener
5325-00-292-5343 INTERCHANGEABLE
Fastener,snap
5325-00-781-5902MS27980-7 INTERCHANGEABLE
Stud,snap Fastener
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5325-00-985-6718 INTERCHANGEABLE
Fastener,snap
5325-01-191-3418 INTERCHANGEABLE
Fastener Snap Assembly
5325-01-200-1531 INTERCHANGEABLE
Fastener Snap Assembly
Cross-Reference Index
Part NumberManufacturer
MS27977-21B Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILF10884 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5325-00-276-4934INTERCHANGEABLE
STUD,SNAP FASTENER
5325-00-285-4751INTERCHANGEABLE
FASTENER,SNAP
MS27983-3&-4
5325-00-286-9554INTERCHANGEABLE
SOCKET,SNAP FASTENER
5325-00-292-5343INTERCHANGEABLE
FASTENER,SNAP
5325-00-781-5902INTERCHANGEABLE
STUD,SNAP FASTENER
MS27980-7
5325-00-985-6718INTERCHANGEABLE
FASTENER,SNAP
5325-01-191-3418INTERCHANGEABLE
FASTENER SNAP ASSEMBLY
5325-01-200-1531INTERCHANGEABLE
FASTENER SNAP ASSEMBLY

Frequently Asked Questions

What is NSN 5325-00-014-8438?

NSN 5325-00-014-8438 is a Fastener,snap, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-014-8438?

NSN 5325-00-014-8438 has 2 cross-referenced part numbers: MS27977-21B (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MILF10884 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5325-00-014-8438?

There are 8 known substitutes for 5325-00-014-8438: 5325-00-276-4934, 5325-00-285-4751, 5325-00-286-9554 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27977-21B?

Key specifications for MS27977-21B: Stud Overall Length: 0.766 INCHES NOMINAL IN; Socket Overall Height: 0.375 INCHES NOMINAL IN; Material: COPPER ALLOY SOCKET; Snap Fastener Clinch Plate Style: CLINCH PLATE. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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