PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4B2051Nut,plain,hexagon

Caterpillar Inc Div Caterpillar Defense · NSN 5310-00-753-4372 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-753-4372 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-753-4372. Primary manufacturer part number: 4B2051.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Hardness Rating: 103.0 BRINELL STANDARD MINIMUM
  • Thread Quantity Per Inch: 24
  • Nominal Thread Size: 0.216 INCHES IN
  • Bearing Surface Type: CHAMFERED OR WASHER FACED
  • Nut Style: HEXAGON
  • Surface Treatment Document and Classification: QQ-P-416 TY-2 CL-3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-Z-325 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-753-4372, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-753-4372
Primary Part Number4B2051
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Hardness Rating103.0 BRINELL STANDARD MINIMUM
Thread Quantity Per Inch24
Nominal Thread Size0.216 INCHES IN
Bearing Surface TypeCHAMFERED OR WASHER FACED
Nut StyleHEXAGON
Surface Treatment Document and ClassificationQQ-P-416 TY-2 CL-3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-Z-325 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentCADMIUM OR ZINC AND CHROMATE OVERALL
Thread DirectionRIGHT-HAND
Width Across Flats0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
Nondefinitive Spec/std DataC GROUP AND 2 TYPE AND 1 STYLE
Nut Height0.148 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Thread Class2B
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5310-00-271-4640 INTERCHANGEABLE
Nut,plain,hexagon
Cross-Reference Index
Part NumberManufacturer
4B2051 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
9417301 PRIMARY Borgwarner Pds (anderson), L.l.c. (USA)
FFN836GR0UPCTYPE2STYLE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
SRS9417301 Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA)
FFN836 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5310-00-271-4640INTERCHANGEABLE
NUT,PLAIN,HEXAGON

Frequently Asked Questions

What is NSN 5310-00-753-4372?

NSN 5310-00-753-4372 is a Nut,plain,hexagon, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-753-4372?

NSN 5310-00-753-4372 has 5 cross-referenced part numbers: 4B2051 (Caterpillar Inc Div Caterpillar Defense), 9417301 (Borgwarner Pds (anderson), L.l.c.), FFN836GR0UPCTYPE2STYLE1 (Federal Specifications Promulgated by General Services Administration Washington DC), SRS9417301 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), FFN836 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-753-4372?

There is 1 known substitute for 5310-00-753-4372: 5310-00-271-4640. Verify interchangeability with system specifications before substitution.

What are the specifications of 4B2051?

Key specifications for 4B2051: Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 103.0 BRINELL STANDARD MINIMUM; Thread Quantity Per Inch: 24; Nominal Thread Size: 0.216 INCHES IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-753-4372 still in active supply?

NSN 5310-00-753-4372 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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