PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21043-04Nut,self-Locking,extended Washer

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use · NSN 5310-00-878-3292 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-878-3292 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-878-3292. Primary manufacturer part number: MS21043-04.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • Washer Outside Diameter: 0.206 INCHES MAXIMUM IN
  • Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Precious Material: SILVER
  • Surface Treatment: SILVER OVERALL
  • Material: IRON ALLOY 660 OVERALL
  • Precious Material and Location: OVERALL SILVER
  • Temp Rating: 800.0 FAHRENHEIT NOMINAL DEGF
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Iron Alloy 660 Overall construction
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-878-3292, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 42 commercial cross-references from 28 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-878-3292
Primary Part NumberMS21043-04
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNational Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
StatusCANCELLED
Washer Outside Diameter0.206 INCHES MAXIMUM IN
Material Document and ClassificationAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Precious MaterialSILVER
Surface TreatmentSILVER OVERALL
MaterialIRON ALLOY 660 OVERALL
Precious Material and LocationOVERALL SILVER
Temp Rating800.0 FAHRENHEIT NOMINAL DEGF
Thread SeriesUNJC
Thread Quantity Per Inch40
Width Across Flats0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
Nominal Thread Size0.112 INCHES IN
Thread DirectionRIGHT-HAND
LubricationSOLUBLE LUBRICANT
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Thread Class3B
Nut StyleHEXAGON
Surface Treatment Document and ClassificationQQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OR AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Washer Thickness0.010 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5310-00-143-6340NAS697C04 INTERCHANGEABLE
Nut,self-Locking,plate
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-00-584-53931772094PC2 INTERCHANGEABLE
Nut,self-Locking,hexagon
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5310-00-801-4419NAS679C04 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-050-3015LH3858-40 INTERCHANGEABLE
Nut,self-Locking,extended Washer
Esna, Llc
5310-01-355-2583NAS697C04 INTERCHANGEABLE
Nut,plain,plate
Naval Inventory Control Point Mechanicsburg
5310-01-382-2760NAS1291C04 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5310-01-479-3842 INTERCHANGEABLE
Nut,plain,extended Washer,hexago
Cross-Reference Index
Part NumberManufacturer
NAS1291C04 Zf Industrieantriebe Witten Gmbh (DEU)
P146007001 Zf Industrieantriebe Witten Gmbh (DEU)
MS21043-04 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS21043-04 Pattonair Usa, Inc. (USA)
MN19-04 Satair A/s (DNK)
MS2104304 Zf Industrieantriebe Witten Gmbh (DEU)
MN19-04 Fairchild Fasteners Europe - Vsd Gmbh (DEU)
MS210-43-04 Ufc Aerospace Corp. (USA)
MN19-04 Hi-Shear Corporation (USA)
H41L04 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
MS21043-04 Indra Sistemas, Sociedad Anonima (ESP)
MS20143-4 Zf Industrieantriebe Witten Gmbh (DEU)
LH3858-40 Penn Engineering & Manufacturing Corp (USA)
NAS679C04 Zf Industrieantriebe Witten Gmbh (DEU)
7383858-PL708782-54 Naval Sea Systems Command (USA)
59FM400 Zf Industrieantriebe Witten Gmbh (DEU)
5310008783292 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
T99C440 Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA)
MS21043-04 Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited (GBR)
MS21043C04 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5310-00-143-6340INTERCHANGEABLE
NUT,SELF-LOCKING,PLATE
NAS697C04
5310-00-584-5393INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
1772094PC2
5310-00-801-4419INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
NAS679C04
5310-01-050-3015INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
LH3858-40
5310-01-355-2583INTERCHANGEABLE
NUT,PLAIN,PLATE
NAS697C04
5310-01-382-2760INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
NAS1291C04
5310-01-479-3842INTERCHANGEABLE
NUT,PLAIN,EXTENDED WASHER,HEXAGO

Frequently Asked Questions

What is NSN 5310-00-878-3292?

NSN 5310-00-878-3292 is a Nut,self-Locking,extended Washer, 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 5310-00-878-3292?

NSN 5310-00-878-3292 has 42 cross-referenced part numbers: NAS1291C04 (Zf Industrieantriebe Witten Gmbh), P146007001 (Zf Industrieantriebe Witten Gmbh), MS21043-04 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), MS21043-04 (Pattonair Usa, Inc.), MN19-04 (Satair A/s) and 37 more.

What NSN replaces 5310-00-878-3292?

There are 7 known substitutes for 5310-00-878-3292: 5310-00-143-6340, 5310-00-584-5393, 5310-00-801-4419 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21043-04?

Key specifications for MS21043-04: Overall Height: 0.103 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Washer Outside Diameter: 0.206 INCHES MAXIMUM IN; Material Document and Classification: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Precious Material: SILVER. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-878-3292 still in active supply?

NSN 5310-00-878-3292 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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