PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27981-4BStud,snap Fastener

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5325-00-901-9660 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-901-9660 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-901-9660. Primary manufacturer part number: MS27981-4B.
Features
  • Stud,snap Fastener — FSC 5325
  • Snap Fastener Stud Style: STUD
  • Stud Base Diameter: 0.500 INCHES NOMINAL IN
  • Surface Treatment Document and Classification: MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Material Document and Classification: QQ-B-613 FED SPEC 1ST MATERIAL RESPONSE OR MIL-C-50 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
  • Surface Treatment: OXIDE FILM OVERALL
  • Material: COPPER ALLOY 260 OVERALL
  • Stud Head Diameter: 0.281 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy 260 Overall construction
General Description

The Stud,snap Fastener, cataloged under National Stock Number 5325-00-901-9660, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-901-9660
Primary Part NumberMS27981-4B
Item NameStud,snap Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusACTIVE
Snap Fastener Stud StyleSTUD
Stud Base Diameter0.500 INCHES NOMINAL IN
Surface Treatment Document and ClassificationMIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and ClassificationQQ-B-613 FED SPEC 1ST MATERIAL RESPONSE OR MIL-C-50 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
Surface TreatmentOXIDE FILM OVERALL
MaterialCOPPER ALLOY 260 OVERALL
Stud Head Diameter0.281 INCHES NOMINAL IN
Stud Retention MethodEYELET
Stud Overall Length0.941 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-142-2010SAE-J1508 TYPE B SIZE 79 INTERCHANGEABLE
Clamp,hose
Sae International Dba Sae International
5305-00-580-4786 INTERCHANGEABLE
Screw,shoulder
1620-00-723-22211116-2-5 INTERCHANGEABLE
Orifice,constant Fl
Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division
5340-01-078-626811162-5 INTERCHANGEABLE
Clamp-Cover Term BL
Te Connectivity Corporation
9160-01-086-0132110625 INTERCHANGEABLE
Wax Strip
Freeman Manufacturing & Supply Co
3020-01-466-8056D20065C205 INTERCHANGEABLE
Gear,spur
Jered Llc
5930-01-619-5750111625 INTERCHANGEABLE
Switch,electronic
Champion Industries Inc.
Cross-Reference Index
Part NumberManufacturer
10086405 Nimikkeistokeskus Ncb Finland (FIN)
MIL-DTL-10844 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27981-4B PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
111625 Itt Telecom Products Corp Network Systems Div (USA)
5325PL1967452 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MS27981-4B Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-00-142-2010INTERCHANGEABLE
CLAMP,HOSE
SAE-J1508 TYPE B SIZE 79
5305-00-580-4786INTERCHANGEABLE
SCREW,SHOULDER
1620-00-723-2221INTERCHANGEABLE
ORIFICE,CONSTANT FL
1116-2-5
5340-01-078-6268INTERCHANGEABLE
CLAMP-COVER TERM BL
11162-5
9160-01-086-0132INTERCHANGEABLE
WAX STRIP
110625
3020-01-466-8056INTERCHANGEABLE
GEAR,SPUR
D20065C205
5930-01-619-5750INTERCHANGEABLE
SWITCH,ELECTRONIC
111625

Frequently Asked Questions

What is NSN 5325-00-901-9660?

NSN 5325-00-901-9660 is a Stud,snap Fastener, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-901-9660?

NSN 5325-00-901-9660 has 6 cross-referenced part numbers: 10086405 (Nimikkeistokeskus Ncb Finland), MIL-DTL-10844 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS27981-4B (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), 111625 (Itt Telecom Products Corp Network Systems Div), 5325PL1967452 (Jednolity Indeks Materialowy - Uniform Material Index) and 1 more.

What NSN replaces 5325-00-901-9660?

There are 7 known substitutes for 5325-00-901-9660: 4730-00-142-2010, 5305-00-580-4786, 1620-00-723-2221 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27981-4B?

Key specifications for MS27981-4B: Snap Fastener Stud Style: STUD; Stud Base Diameter: 0.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-F-495 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-B-613 FED SPEC 1ST MATERIAL RESPONSE OR MIL-C-50 MIL SPEC 2ND MATERIAL RESPONSE OVERALL. 10 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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