PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-DTL-45913Nut,self-Locking,hexagon

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-01-032-2319 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-032-2319 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-032-2319. Primary manufacturer part number: MIL-DTL-45913.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Width Across Flats: 2.175 INCHES MINIMUM AND 2.252 INCHES MAXIMUM IN
  • Nut Height: 1.245 INCHES MINIMUM AND 1.671 INCHES MAXIMUM IN
  • Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nominal Thread Size: 1.500 INCHES IN
  • Material: PLASTIC POLYAMIDE NYLON LOCKING INSERT
  • Surface Treatment: CADMIUM OVERALL EXCEPT INSERT
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 5310-01-032-2319, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-032-2319
Primary Part NumberMIL-DTL-45913
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Width Across Flats2.175 INCHES MINIMUM AND 2.252 INCHES MAXIMUM IN
Nut Height1.245 INCHES MINIMUM AND 1.671 INCHES MAXIMUM IN
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nominal Thread Size1.500 INCHES IN
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
Surface TreatmentCADMIUM OVERALL EXCEPT INSERT
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
Thread SeriesUNEF
Nut StyleHEXAGON
Thread Quantity Per Inch14
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread Class3B
MaterialSTEEL NUT
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-935-3750 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-231-7459 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-253-0058 INTERCHANGEABLE
Nut,self-Locking,extended Washer
5310-01-374-0508 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-461-4610 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-514-0441 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-518-7597 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-522-0301 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-531-7280 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-535-8822 INTERCHANGEABLE
Nut,self-Locking,hexagon
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-45913 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS51943-57 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
M45913/3-24FG8C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-935-3750INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-231-7459INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-253-0058INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
5310-01-374-0508INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-461-4610INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-514-0441INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-518-7597INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-522-0301INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-531-7280INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-535-8822INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-548-1269INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-570-7523INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON

Frequently Asked Questions

What is NSN 5310-01-032-2319?

NSN 5310-01-032-2319 is a Nut,self-Locking,hexagon, manufactured by Military Specifications Promulgated by Military Departments/agencies 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 5310-01-032-2319?

NSN 5310-01-032-2319 has 3 cross-referenced part numbers: MIL-DTL-45913 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51943-57 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), M45913/3-24FG8C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-01-032-2319?

There are 12 known substitutes for 5310-01-032-2319: 5310-00-935-3750, 5310-01-231-7459, 5310-01-253-0058 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-45913?

Key specifications for MIL-DTL-45913: Width Across Flats: 2.175 INCHES MINIMUM AND 2.252 INCHES MAXIMUM IN; Nut Height: 1.245 INCHES MINIMUM AND 1.671 INCHES MAXIMUM IN; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Bearing Surface Type: CHAMFERED OR WASHER FACED. 15 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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