PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37263Nut,self-Locking,hexagon

Fastenal Company Dba Fastenal Co · NSN 5310-01-611-4123 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-611-4123 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-611-4123. Primary manufacturer part number: 37263.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Surface Treatment: ZINC OVERALL
  • Bearing Surface Type: CHAMFERED
  • Locking Feature: PREVAILING TORQUE ALL METAL DESIGN
  • Thread Direction: RIGHT-HAND
  • Nominal Thread Size: 0.3125 INCHES IN
  • Thread Class: 2B
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-611-4123, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-611-4123
Primary Part Number37263
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Surface TreatmentZINC OVERALL
Bearing Surface TypeCHAMFERED
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Thread DirectionRIGHT-HAND
Nominal Thread Size0.3125 INCHES IN
Thread Class2B
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Width Across Flats0.489 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
Thread Quantity Per Inch18
Nut StyleHEXAGON
LubricationWAX
Nut Height0.180 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Material Document and ClassificationGRADE A STEEL IAW IFI-100/107 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Surface Treatment Document and ClassificationFE/ZN 3AT IAW ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2530-00-208-7095404946C91 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
4320-01-241-703737263 INTERCHANGEABLE
Rotor,pilot Valve
Eaton Aerospace, Llc Dba Jackson South
2040-01-651-000737263 INTERCHANGEABLE
Frame,canopy,inflatable Boat
Willard Marine, Inc.
Cross-Reference Index
Part NumberManufacturer
37263 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
2530-00-208-7095INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
404946C91
4320-01-241-7037INTERCHANGEABLE
ROTOR,PILOT VALVE
37263
2040-01-651-0007INTERCHANGEABLE
FRAME,CANOPY,INFLATABLE BOAT
37263

Frequently Asked Questions

What is NSN 5310-01-611-4123?

NSN 5310-01-611-4123 is a Nut,self-Locking,hexagon, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-611-4123?

NSN 5310-01-611-4123 has 1 cross-referenced part number: 37263 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-611-4123?

There are 3 known substitutes for 5310-01-611-4123: 2530-00-208-7095, 4320-01-241-7037, 2040-01-651-0007. Verify interchangeability with system specifications before substitution.

What are the specifications of 37263?

Key specifications for 37263: Surface Treatment: ZINC OVERALL; Bearing Surface Type: CHAMFERED; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Thread Direction: RIGHT-HAND. 17 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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