PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37581Nut,self-Locking,hexagon

Fastenal Company Dba Fastenal Co · NSN 5310-01-564-3419 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-564-3419 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-564-3419. Primary manufacturer part number: 37581.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Thread Class: 2B
  • Material: STEEL OVERALL
  • Surface Treatment Document and Classification: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
  • Surface Treatment: ZINC OVERALL
  • Material Document and Classification: SAE J995 GRADE 8 AND/OR IFI 100/107 GRADE C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Thread Quantity Per Inch: 8
  • Width Across Flats: 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
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 5310-01-564-3419, 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 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-564-3419
Primary Part Number37581
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Thread Class2B
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Surface TreatmentZINC OVERALL
Material Document and ClassificationSAE J995 GRADE 8 AND/OR IFI 100/107 GRADE C ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Quantity Per Inch8
Width Across Flats1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
Nut Height1.016 INCHES MINIMUM AND 1.078 INCHES MAXIMUM IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Nominal Thread Size1.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6685-00-085-2404 INTERCHANGEABLE
Detector,temperature
5950-00-446-050637581 INTERCHANGEABLE
Saturable Reactor
Freed Transformer Co
Cross-Reference Index
Part NumberManufacturer
37581 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
6685-00-085-2404INTERCHANGEABLE
DETECTOR,TEMPERATURE
5950-00-446-0506INTERCHANGEABLE
SATURABLE REACTOR
37581

Frequently Asked Questions

What is NSN 5310-01-564-3419?

NSN 5310-01-564-3419 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 5310-01-564-3419?

NSN 5310-01-564-3419 has 1 cross-referenced part number: 37581 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5310-01-564-3419?

There are 2 known substitutes for 5310-01-564-3419: 6685-00-085-2404, 5950-00-446-0506. Verify interchangeability with system specifications before substitution.

What are the specifications of 37581?

Key specifications for 37581: Thread Class: 2B; Material: STEEL OVERALL; Surface Treatment Document and Classification: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment: ZINC OVERALL. 14 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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