PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21045-6Nut,self-Locking,hexagon

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-982-4908 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-982-4908 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-982-4908. Primary manufacturer part number: MS21045-6.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
  • Nut Height: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
  • Nominal Thread Size: 0.375 INCHES IN
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Lubrication: SOLUBLE LUBRICANT
  • Bearing Surface Finish: 125.0 MICROINCHES
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-982-4908, 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 25 commercial cross-references from 22 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
NSN5310-00-982-4908
Primary Part NumberMS21045-6
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
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Nut Height0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
Nominal Thread Size0.375 INCHES IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
LubricationSOLUBLE LUBRICANT
Bearing Surface Finish125.0 MICROINCHES
Bearing Surface TypeCHAMFERED OR WASHER FACED
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Class3B
Countersink Angle88.0 DEGREES NOMINAL NUT
Thread DirectionRIGHT-HAND
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut StyleHEXAGON
Thread Quantity Per Inch24
Width Across Flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5136-00-189-7805385331 INTERCHANGEABLE
Tap,thread Cutting
Greenfield Industries Inc
5310-00-275-2087 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-281-338922FH624 INTERCHANGEABLE
Nut,self-Locking,hexagon
Sps Technologies, Llc Dba PB Fasteners
1280-00-560-9766 INTERCHANGEABLE
Board,amplifier Fil
5330-00-575-7130 INTERCHANGEABLE
Gasket
5310-00-595-72371019068-042 INTERCHANGEABLE
Washer,lock
Lexel Imaging Systems Inc
5360-00-597-7638671490 INTERCHANGEABLE
Spring,helical,torsion
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5310-00-950-0039MS21044N6 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5330-01-004-7002 INTERCHANGEABLE
Gasket
5962-01-110-99334039018-478 INTERCHANGEABLE
Microcircuit,digital
Honeywell International Inc. Dba Honeywell International
Cross-Reference Index
Part NumberManufacturer
27FH-624 Sps Technologies, Llc Dba PB Fasteners (USA)
5310009824908 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
LFLH1801-064 Harvard Industries Inc (USA)
AN365-624 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
MS21045-6 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS21045-6 Freundlich Supply Company, Inc. (USA)
5740128 Am General Llc (USA)
F1801-064 Harvard Industries Inc (USA)
MS21045-6 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS21045-6 Northrop Grumman Systems Corporation Div Northrop Grumman Aeronautics Systems (USA)
YE3182 Lamson and Sessions Co the (USA)
5310PL0765462 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AN363-624 Zf Industrieantriebe Witten Gmbh (DEU)
H55-6CW Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
H55-6CW Howmet Global Fastening Systems Inc (USA)
MS21045-6 Leonardo Spa Helicopters Division - Production Site (ITA)
MS21045-6 Sps Technologies, Llc Dba PB Fasteners (USA)
99638A400 Mcmaster-Carr Supply Co (USA)
853858 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Us Army Research, Development and Engineering Command Armament (USA)
456702 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
Related Parts
5136-00-189-7805INTERCHANGEABLE
TAP,THREAD CUTTING
385331
5310-00-275-2087INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-281-3389INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
22FH624
1280-00-560-9766INTERCHANGEABLE
BOARD,AMPLIFIER FIL
5330-00-575-7130INTERCHANGEABLE
GASKET
5310-00-595-7237INTERCHANGEABLE
WASHER,LOCK
1019068-042
5360-00-597-7638INTERCHANGEABLE
SPRING,HELICAL,TORSION
671490
5310-00-950-0039INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21044N6
5330-01-004-7002INTERCHANGEABLE
GASKET
5962-01-110-9933INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4039018-478
1260-01-134-3648INTERCHANGEABLE
CONTROL ASSEMBLY,LAMP
1399-2
5962-01-141-3102INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
45670-2

Frequently Asked Questions

What is NSN 5310-00-982-4908?

NSN 5310-00-982-4908 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 5310-00-982-4908?

NSN 5310-00-982-4908 has 25 cross-referenced part numbers: 27FH-624 (Sps Technologies, Llc Dba PB Fasteners), 5310009824908 (E.c.a Etablissement Centrald'approvisionnement Des Forces Armee), LFLH1801-064 (Harvard Industries Inc), AN365-624 (Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group), MS21045-6 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 20 more.

What NSN replaces 5310-00-982-4908?

There are 12 known substitutes for 5310-00-982-4908: 5136-00-189-7805, 5310-00-275-2087, 5310-00-281-3389 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21045-6?

Key specifications for MS21045-6: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nut Height: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN; Nominal Thread Size: 0.375 INCHES IN; Material: STEEL OVERALL. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-982-4908 still in active supply?

NSN 5310-00-982-4908 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.
PartsTable Design LLC · partstable.com