PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55221Nut,self-Locking,hexagon

Sabre Engines Ltd · NSN 5310-01-125-0837 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-125-0837 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-125-0837. Primary manufacturer part number: 55221.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • 4 verified cross-references
  • Primary manufacturer: Sabre Engines Ltd
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-125-0837, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sabre Engines Ltd. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameNut,self-Locking,hexagon
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersGrove R B Inc (CAGE 0GEN7); Sabre Engines Ltd (CAGE U2340); Jasmin Defense Industrial Depot (CAGE 1QWC5); Classic Restoration and Sales (CAGE 0HPN5)
Technical Specifications
ParameterValue
NSN5310-01-125-0837
Primary Part Number55221
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSabre Engines Ltd
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-285-946451X3648 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
2930-01-290-2558 INTERCHANGEABLE
Core,radiator
Cross-Reference Index
Part NumberManufacturer
55221 Grove R B Inc (USA)
55221 PRIMARY Sabre Engines Ltd (GBR)
55221 Jasmin Defense Industrial Depot (USA)
55221 Classic Restoration and Sales (USA)
Related Parts
5330-00-285-9464INTERCHANGEABLE
SEAL,PLAIN ENCASED
51X3648
2930-01-290-2558INTERCHANGEABLE
CORE,RADIATOR

Frequently Asked Questions

What is NSN 5310-01-125-0837?

NSN 5310-01-125-0837 is a Nut,self-Locking,hexagon, manufactured by Sabre Engines Ltd, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-125-0837?

NSN 5310-01-125-0837 has 4 cross-referenced part numbers: 55221 (Grove R B Inc), 55221 (Sabre Engines Ltd), 55221 (Jasmin Defense Industrial Depot), 55221 (Classic Restoration and Sales).

What NSN replaces 5310-01-125-0837?

There are 2 known substitutes for 5310-01-125-0837: 5330-00-285-9464, 2930-01-290-2558. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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