PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21083C04Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-939-0849 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-939-0849 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-939-0849. Primary manufacturer part number: MS21083C04.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT
  • Surface Treatment: PASSIVATE OVERALL EXCEPT INSERT
  • Material: STEEL CORROSION RESISTING OVERALL EXCEPT INSERT
  • Bearing Surface Finish: 125.0 MICROINCHES
  • Thread Quantity Per Inch: 40
  • Width Across Flats: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
  • Nominal Thread Size: 0.112 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Polyamide Nylon Locking Insert construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-939-0849, is classified within Federal Supply Class 5310 (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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 15 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-939-0849
Primary Part NumberMS21083C04
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
Surface TreatmentPASSIVATE OVERALL EXCEPT INSERT
MaterialSTEEL CORROSION RESISTING OVERALL EXCEPT INSERT
Bearing Surface Finish125.0 MICROINCHES
Thread Quantity Per Inch40
Width Across Flats0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
Nominal Thread Size0.112 INCHES IN
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Thread SeriesUNJC
Countersink Angle88.0 DEGREES NOMINAL NUT
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
Thread DirectionRIGHT-HAND
Thread Class3B
Nut Height0.125 INCHES MAXIMUM IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nut StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5305-00-054-5650 INTERCHANGEABLE
Screw,machine
5310-00-208-9261108633-321 INTERCHANGEABLE
Nut,self-Locking,hexagon
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
272.394.003 Vincorion Advanced Systems Gmbh Div Jenoptik Defense and Civil Systems (DEU)
622-25PM50G Zf Industrieantriebe Witten Gmbh (DEU)
0073-562P1 Sierra Networks Inc Sierracom Div (USA)
0073-562P1 Microwave Engineering Corporation (USA)
MS21083-004 Zf Industrieantriebe Witten Gmbh (DEU)
1287741 Naval Sea Systems Command (USA)
5310009390849 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
MS21083C04 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS21083C04 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NASM25027 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
36479-2 Sierra Networks Inc Sierracom Div (USA)
1287741 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
714-990026-551 General Dynamics Land Systems Canada Corporation (CAN)
5310PL1063065 Jednolity Indeks Materialowy - Uniform Material Index (POL)
10121860 Nimikkeistokeskus Ncb Finland (FIN)
57A5A28-2 Zf Industrieantriebe Witten Gmbh (DEU)
114-0576-001 The Boeing Company Div Legacy Boeing Hb1 (USA)
36479-2 Microwave Engineering Corporation (USA)
57A5A28-2 Naval Sea Systems Command (USA)
0313769 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5305-00-054-5650INTERCHANGEABLE
SCREW,MACHINE
5310-00-208-9261INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
108633-321

Frequently Asked Questions

What is NSN 5310-00-939-0849?

NSN 5310-00-939-0849 is a Nut,self-Locking,hexagon, manufactured by National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-939-0849?

NSN 5310-00-939-0849 has 23 cross-referenced part numbers: 272.394.003 (Vincorion Advanced Systems Gmbh Div Jenoptik Defense and Civil Systems), 622-25PM50G (Zf Industrieantriebe Witten Gmbh), 0073-562P1 (Sierra Networks Inc Sierracom Div), 0073-562P1 (Microwave Engineering Corporation), MS21083-004 (Zf Industrieantriebe Witten Gmbh) and 18 more.

What NSN replaces 5310-00-939-0849?

There are 2 known substitutes for 5310-00-939-0849: 5305-00-054-5650, 5310-00-208-9261. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21083C04?

Key specifications for MS21083C04: Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT; Surface Treatment: PASSIVATE OVERALL EXCEPT INSERT; Material: STEEL CORROSION RESISTING OVERALL EXCEPT INSERT; Bearing Surface Finish: 125.0 MICROINCHES. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-939-0849 still in active supply?

NSN 5310-00-939-0849 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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