PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21083N3Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-902-6676 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-902-6676 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-902-6676. Primary manufacturer part number: MS21083N3.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Countersink Angle: 88.0 DEGREES MINIMUM NUT
  • Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT
  • Lubrication: SOLUBLE LUBRICANT
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
  • Hardness Rating: 35.0 ROCKWELL C MAXIMUM
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL EXCEPT INSERT
  • Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
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 5310-00-902-6676, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 18 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-902-6676
Primary Part NumberMS21083N3
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
Countersink Angle88.0 DEGREES MINIMUM NUT
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
LubricationSOLUBLE LUBRICANT
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Hardness Rating35.0 ROCKWELL C MAXIMUM
Surface TreatmentCADMIUM AND CHROMATE OVERALL EXCEPT INSERT
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Temp Rating230.0 FAHRENHEIT MAXIMUM DEGF
Width Across Flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
Thread Quantity Per Inch32
Nominal Thread Size0.190 INCHES IN
Bearing Surface Finish125.0 MICROINCHES
MaterialSTEEL NUT
Nut StyleHEXAGON
Nut Height0.188 INCHES MAXIMUM IN
Thread Class3B
Bearing Surface TypeCHAMFERED OR WASHER FACED
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES OVERALL EXCEPT INSERT
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-231-4949 INTERCHANGEABLE
Nut,self-Locking,hexagon
5935-00-251-34532129800002 INTERCHANGEABLE
Connector,receptacle,electrical
L3 Aviation Products, Inc. Dba L3 Technologies
5930-00-256-11125044 INTERCHANGEABLE
Switch,push-Pull
Cole Hersee Company
5325-00-270-887010525 INTERCHANGEABLE
Grommet,nonmetallic
Clayton Manufacturing Company
2815-00-306-1956CS2815-0034 INTERCHANGEABLE
Valve,poppet,engine
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4320-00-398-822910525 INTERCHANGEABLE
Ring,wearing
Rps-Fl, Inc. Dba Rps Inc
5985-00-405-756410279265 INTERCHANGEABLE
Dummy Load,electrical
Us Army Aviation and Missile Command
6685-00-526-8620G22699 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5331-00-558-248314335 INTERCHANGEABLE
O-Ring
Mission Systems Orchard Park Inc
5965-00-588-6789939-808-002-607 INTERCHANGEABLE
Boom,microphone
Roanwell, Llc
Cross-Reference Index
Part NumberManufacturer
5310009026676 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
5310PL1369992 Jednolity Indeks Materialowy - Uniform Material Index (POL)
10082640 Nimikkeistokeskus Ncb Finland (FIN)
14335 Unison Industries Llc (USA)
MS21083N3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS21083N3 Goriziane Group Spa (ITA)
853921-00 Defense Reduction Agency (USA)
14335 Unison Industries, Llc Dba Unison Industries Inc (USA)
AE27-12 Safran Aerosystems Ex Safran Aerotechnics Rlm (FRA)
MS21083N3 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
853921 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
NASM25027 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
145-4510955-65 Rohr, Inc. Dba Rohr Industries Inc Div Rohr Inc., a Part of Collins Aerospace (USA)
802823-00 Defense Reduction Agency (USA)
404979 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
5310PL0150158 Jednolity Indeks Materialowy - Uniform Material Index (POL)
SM-A-701372-2 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
MS20364-1032 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3255255 Hatch & Kirk, Inc. (USA)
MS1083-N3 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5310-00-231-4949INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5935-00-251-3453INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2129800002
5930-00-256-1112INTERCHANGEABLE
SWITCH,PUSH-PULL
5044
5325-00-270-8870INTERCHANGEABLE
GROMMET,NONMETALLIC
10525
2815-00-306-1956INTERCHANGEABLE
VALVE,POPPET,ENGINE
CS2815-0034
4320-00-398-8229INTERCHANGEABLE
RING,WEARING
10525
5985-00-405-7564INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
10279265
6685-00-526-8620INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
G22699
5331-00-558-2483INTERCHANGEABLE
O-RING
14335
5965-00-588-6789INTERCHANGEABLE
BOOM,MICROPHONE
939-808-002-607
5945-00-729-1232INTERCHANGEABLE
RELAY,THERMAL
10525
6680-00-886-3605INTERCHANGEABLE
TRANSMITTER,RATE OF FLOW

Frequently Asked Questions

What is NSN 5310-00-902-6676?

NSN 5310-00-902-6676 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 5310-00-902-6676?

NSN 5310-00-902-6676 has 24 cross-referenced part numbers: 5310009026676 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 5310PL1369992 (Jednolity Indeks Materialowy - Uniform Material Index), 10082640 (Nimikkeistokeskus Ncb Finland), 14335 (Unison Industries Llc), MS21083N3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 19 more.

What NSN replaces 5310-00-902-6676?

There are 12 known substitutes for 5310-00-902-6676: 5310-00-231-4949, 5935-00-251-3453, 5930-00-256-1112 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21083N3?

Key specifications for MS21083N3: Countersink Angle: 88.0 DEGREES MINIMUM NUT; Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT; Lubrication: SOLUBLE LUBRICANT; Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-902-6676 still in active supply?

NSN 5310-00-902-6676 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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