PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M24129-4-5CNut,self-Locking,hexagon

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-836-4310 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-836-4310 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-836-4310. Primary manufacturer part number: M24129-4-5C.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Surface Treatment: PASSIVATE NUT
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT
  • Nominal Thread Size: 0.312 INCHES IN
  • Material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 310 OR STEEL COMP 316 NUT
  • Material: PLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT
  • Width Across Flats: 0.551 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 or Steel Comp 303 or Steel Comp 303SE or Steel Comp 304 or Steel Comp 305 or Steel Comp 310 or Steel Comp 316 Nut construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-836-4310, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN5310-00-836-4310
Primary Part NumberM24129-4-5C
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
StatusCANCELLED
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentPASSIVATE NUT
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT
Nominal Thread Size0.312 INCHES IN
MaterialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 310 OR STEEL COMP 316 NUT
MaterialPLASTIC POLYHEXAMETHYLENE AMIDE LOCKING INSERT
Width Across Flats0.551 INCHES MINIMUM AND 0.566 INCHES MAXIMUM IN
Nut StyleHEXAGON
Bearing Surface TypeCHAMFERED OR WASHER FACED
Material Document and ClassificationMIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING INSERT
Nut Height0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Thread Class3B
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread Quantity Per Inch18
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES NUT
Countersink Angle88.0 DEGREES NOMINAL NUT
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5310-00-584-7990 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7991 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7992 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-584-7993 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-727-522379NTU040 INTERCHANGEABLE
Nut,self-Locking,hexagon
Esna, Llc
Cross-Reference Index
Part NumberManufacturer
M24129-4-5C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILN24129-4 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
79NTU058 Harvard Industries Inc (USA)
79NTU058 Esna, Llc (USA)
MS16228-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-584-7990INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7991INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7992INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-584-7993INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-727-5223INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
79NTU040

Frequently Asked Questions

What is NSN 5310-00-836-4310?

NSN 5310-00-836-4310 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: cancelled.

What are the part numbers for NSN 5310-00-836-4310?

NSN 5310-00-836-4310 has 5 cross-referenced part numbers: M24129-4-5C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILN24129-4 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 79NTU058 (Harvard Industries Inc), 79NTU058 (Esna, Llc), MS16228-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5310-00-836-4310?

There are 5 known substitutes for 5310-00-836-4310: 5310-00-584-7990, 5310-00-584-7991, 5310-00-584-7992 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M24129-4-5C?

Key specifications for M24129-4-5C: Thread Series: UNIFIED NATIONAL COARSE (UNC); Surface Treatment: PASSIVATE NUT; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT; Nominal Thread Size: 0.312 INCHES IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-836-4310 still in active supply?

NSN 5310-00-836-4310 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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