PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51922-22Nut,self-Locking,hexagon

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-067-4903 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-067-4903 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-067-4903. Primary manufacturer part number: MS51922-22.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Width Across Flats: 0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN
  • Thread Direction: RIGHT-HAND
  • Thread Quantity Per Inch: 24
  • Thread Series: UNF
  • Bearing Surface Type: FLAT
  • Nominal Thread Size: 0.375 INCHES IN
  • Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-067-4903, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-067-4903
Primary Part NumberMS51922-22
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Width Across Flats0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Quantity Per Inch24
Thread SeriesUNF
Bearing Surface TypeFLAT
Nominal Thread Size0.375 INCHES IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Nut Height0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OVERALL
Nut StyleHEXAGON
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Thread Class2B
MaterialSTEEL COMP 303 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-059-9264MS21045C6 INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
MS51922-22 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
XX004-7406 Rdm Technology B.v. (NLD)
Related Parts
5310-00-059-9264INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS21045C6

Frequently Asked Questions

What is NSN 5310-00-067-4903?

NSN 5310-00-067-4903 is a Nut,self-Locking,hexagon, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-067-4903?

NSN 5310-00-067-4903 has 2 cross-referenced part numbers: MS51922-22 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), XX004-7406 (Rdm Technology B.v.).

What NSN replaces 5310-00-067-4903?

There is 1 known substitute for 5310-00-067-4903: 5310-00-059-9264. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51922-22?

Key specifications for MS51922-22: Width Across Flats: 0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND; Thread Quantity Per Inch: 24; Thread Series: UNF. 13 total characteristics are documented in the Federal Logistics Information System.

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