PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

803B1Nut,self-Locking,hexagon

Diamond Reo Truck Co · NSN 5310-00-058-7343 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-058-7343 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-058-7343. Primary manufacturer part number: 803B1.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
  • Nut Height: 0.453 INCHES NOMINAL IN
  • Nominal Thread Size: 0.375 INCHES IN
  • Thread Quantity Per Inch: 24
  • Thread Series: UNF
  • Material: STEEL NUT
  • Thread Class: 3B
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 5310-00-058-7343, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Diamond Reo Truck Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-058-7343
Primary Part Number803B1
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDiamond Reo Truck Co
StatusCANCELLED
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Nut Height0.453 INCHES NOMINAL IN
Nominal Thread Size0.375 INCHES IN
Thread Quantity Per Inch24
Thread SeriesUNF
MaterialSTEEL NUT
Thread Class3B
Material Document and ClassificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE NUT
MaterialFIBER LOCKING INSERT
Thread DirectionRIGHT-HAND
Width Across Flats0.563 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4240-00-022-2522A-NGH-C-1-8-1-3-2-1-3-0-0-6-0-0 INTERCHANGEABLE
Harness,safety,industrial
Mine Safety Appliances Company
4240-01-421-0859502644 INTERCHANGEABLE
Harness,safety,industrial
Msa Inc Dba Mine Safety Fall Protection
5340-01-666-741450264-4 INTERCHANGEABLE
Clamp,block
Star Technologies Llc
Cross-Reference Index
Part NumberManufacturer
803B1 Diamond Reo Truck Co (USA)
S13302 Bae Systems Land & Armaments L.p. (USA)
7348528 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
502644 Renk America Llc Div Renk America (USA)
911882X30 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
4240-00-022-2522INTERCHANGEABLE
HARNESS,SAFETY,INDUSTRIAL
A-NGH-C-1-8-1-3-2-1-3-0-0-6-0-0
4240-01-421-0859INTERCHANGEABLE
HARNESS,SAFETY,INDUSTRIAL
502644
5340-01-666-7414INTERCHANGEABLE
CLAMP,BLOCK
50264-4

Frequently Asked Questions

What is NSN 5310-00-058-7343?

NSN 5310-00-058-7343 is a Nut,self-Locking,hexagon, manufactured by Diamond Reo Truck Co, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-058-7343?

NSN 5310-00-058-7343 has 5 cross-referenced part numbers: 803B1 (Diamond Reo Truck Co), S13302 (Bae Systems Land & Armaments L.p.), 7348528 (U S Army Tank Automotive Command Amsta-Im-Mm), 502644 (Renk America Llc Div Renk America), 911882X30 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5310-00-058-7343?

There are 3 known substitutes for 5310-00-058-7343: 4240-00-022-2522, 4240-01-421-0859, 5340-01-666-7414. Verify interchangeability with system specifications before substitution.

What are the specifications of 803B1?

Key specifications for 803B1: Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT; Nut Height: 0.453 INCHES NOMINAL IN; Nominal Thread Size: 0.375 INCHES IN; Thread Quantity Per Inch: 24. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-058-7343 still in active supply?

NSN 5310-00-058-7343 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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