PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

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

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5310-00-061-4650 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-061-4650 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-061-4650. Primary manufacturer part number: MIL-DTL-45913C.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
  • Thread Quantity Per Inch: 20
  • Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF
  • Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
  • Width Across Flats: 0.428 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Size: 0.250 INCHES IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Nut construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-061-4650, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-061-4650
Primary Part NumberMIL-DTL-45913C
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
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread Quantity Per Inch20
Temp Rating250.0 FAHRENHEIT NOMINAL DEGF
Hardness Rating26.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
Width Across Flats0.428 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Size0.250 INCHES IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Thread Class3B
Surface Treatment Document and ClassificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
Thread DirectionRIGHT-HAND
MaterialSTEEL NUT
Surface TreatmentCADMIUM AND CHROMATE OVERALL
Nut StyleHEXAGON
MaterialPLASTIC POLYAMIDE NYLON LOCKING INSERT
Nut Height0.328 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5310-00-061-4651 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-241-6661 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-241-6665 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-455-9967 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-00-488-3889 INTERCHANGEABLE
Nut,self-Locking,hexagon
5310-01-078-780626110R1 INTERCHANGEABLE
Nut,self-Locking,cone Seat,hexag
Nd Defense Llc
Cross-Reference Index
Part NumberManufacturer
MIL-DTL-45913C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
114356A Oshkosh Defense Llc (USA)
MS51943-1 Zf Industrieantriebe Witten Gmbh (DEU)
5310000614650 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
M45913/3-4CG8C National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
M45913/3-4CG8C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M45913/3-4CG8C Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS51943-31 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
26110R1 Komatsu American Intl Co (USA)
114356A Oshkosh Corp (USA)
5310PL0374504 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5310-00-061-4651INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-241-6661INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-241-6665INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-455-9967INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-00-488-3889INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5310-01-078-7806INTERCHANGEABLE
NUT,SELF-LOCKING,CONE SEAT,HEXAG
26110R1

Frequently Asked Questions

What is NSN 5310-00-061-4650?

NSN 5310-00-061-4650 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 5310-00-061-4650?

NSN 5310-00-061-4650 has 11 cross-referenced part numbers: MIL-DTL-45913C (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 114356A (Oshkosh Defense Llc), MS51943-1 (Zf Industrieantriebe Witten Gmbh), 5310000614650 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), M45913/3-4CG8C (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use) and 6 more.

What NSN replaces 5310-00-061-4650?

There are 6 known substitutes for 5310-00-061-4650: 5310-00-061-4651, 5310-00-241-6661, 5310-00-241-6665 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-DTL-45913C?

Key specifications for MIL-DTL-45913C: Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT; Thread Quantity Per Inch: 20; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-061-4650 still in active supply?

NSN 5310-00-061-4650 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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