PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21042L6Nut,self-Locking,extended Washer

Bell Textron Inc · NSN 5310-00-807-1477 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-807-1477 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-807-1477. Primary manufacturer part number: MS21042L6.
Features
  • Nut,self-Locking,extended Washer — FSC 5310
  • Thread Quantity Per Inch: 24
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Nut Style: HEXAGON
  • Lubrication: DRY FILM LUBRICANT
  • Washer Thickness: 0.030 INCHES MINIMUM IN
  • Nominal Thread Size: 0.375 INCHES IN
  • Surface Treatment: CADMIUM AND CHROMATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-807-1477, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bell Textron Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 34 commercial cross-references from 29 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-807-1477
Primary Part NumberMS21042L6
Item NameNut,self-Locking,extended Washer
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBell Textron Inc
StatusCANCELLED
Thread Quantity Per Inch24
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut StyleHEXAGON
LubricationDRY FILM LUBRICANT
Washer Thickness0.030 INCHES MINIMUM IN
Nominal Thread Size0.375 INCHES IN
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Thread Class3B
Thread DirectionRIGHT-HAND
Washer Outside Diameter0.620 INCHES MAXIMUM IN
Specification/standard Data26512-GN10U MANUFACTURERS STANDARD
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MaterialSTEEL OVERALL
Temp Rating450.0 FAHRENHEIT NOMINAL DEGF
Thread SeriesUNIFIED NATIONAL JOINT FINE (UNJF)
Width Across Flats0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3805-00-162-7988 INTERCHANGEABLE
Shaft,pulley,main B
3030-00-529-0295 INTERCHANGEABLE
Belt,v
4130-00-977-6538208091 INTERCHANGEABLE
Filter Element,air Conditioning
Research Products Corp
5365-01-471-6388 INTERCHANGEABLE
Spacer,special Shaped
1730-01-721-3249H146 INTERCHANGEABLE
Cover,aircraft Ground Servicing
California Poptop, Llc Dba Ca Poptop Llc
Cross-Reference Index
Part NumberManufacturer
MS21042L6 PRIMARY Bell Textron Inc (USA)
Z00.N5415371413 Daher Aerospace - Ex Socata (FRA)
MS21042L6 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
FN12M-064 Sps Technologies, Llc Dba PB Fasteners (USA)
2110079 Embraer Empresa Brasileira De Aeronautica Sa (BRA)
MS21042L6 Howmet Global Fastening Systems Inc (USA)
H14-6 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
GN10U624 Northrop Grumman Systems Corporation (USA)
H14-6 Tecnotec Sarl (FRA)
MS21042L6 Bristol Industries, Llc (USA)
5310PL0150583 Jednolity Indeks Materialowy - Uniform Material Index (POL)
MS21042L6 PRIMARY The Boeing Company Div Services (USA)
H14-6 Leonardo Spa Helicopters Division - Production Site (ITA)
T98S624 Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace (USA)
MS21042L6 Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA)
MS21042L6 Sps Technologies, Llc Dba PB Fasteners (USA)
MS21042L6 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
2110079 Embraer S.a. (BRA)
10121718 Nimikkeistokeskus Ncb Finland (FIN)
H14-6 Howmet Global Fastening Systems Inc (USA)
Related Parts
3805-00-162-7988INTERCHANGEABLE
SHAFT,PULLEY,MAIN B
3030-00-529-0295INTERCHANGEABLE
BELT,V
4130-00-977-6538INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
208091
5365-01-471-6388INTERCHANGEABLE
SPACER,SPECIAL SHAPED
1730-01-721-3249INTERCHANGEABLE
COVER,AIRCRAFT GROUND SERVICING
H146

Frequently Asked Questions

What is NSN 5310-00-807-1477?

NSN 5310-00-807-1477 is a Nut,self-Locking,extended Washer, manufactured by Bell Textron Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-807-1477?

NSN 5310-00-807-1477 has 34 cross-referenced part numbers: MS21042L6 (Bell Textron Inc), Z00.N5415371413 (Daher Aerospace - Ex Socata), MS21042L6 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use), FN12M-064 (Sps Technologies, Llc Dba PB Fasteners), 2110079 (Embraer Empresa Brasileira De Aeronautica Sa) and 29 more.

What NSN replaces 5310-00-807-1477?

There are 5 known substitutes for 5310-00-807-1477: 3805-00-162-7988, 3030-00-529-0295, 4130-00-977-6538 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21042L6?

Key specifications for MS21042L6: Thread Quantity Per Inch: 24; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Nut Style: HEXAGON; Lubrication: DRY FILM LUBRICANT. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-807-1477 still in active supply?

NSN 5310-00-807-1477 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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