PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21516-1Nut,self-Locking,hexagon

Lockheed Martin Corp · NSN 5310-01-518-8204 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-518-8204 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-518-8204. Primary manufacturer part number: 21516-1.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • 3 verified cross-references
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-518-8204, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corp. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 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)
ManufacturersGoodrich Aerospace Canada Ltd (CAGE 02121); Lockheed Martin Services, Llc (CAGE 1WL60); Lockheed Martin Corp (CAGE 98897)
Technical Specifications
ParameterValue
NSN5310-01-518-8204
Primary Part Number21516-1
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2815-01-108-6526215161 INTERCHANGEABLE
Oil Pan
Cummins Inc.
2920-01-266-9565 INTERCHANGEABLE
Generator,engine Accessory
6240-01-473-6770215-161 INTERCHANGEABLE
Lamp,glow
Preston Industries Inc
Cross-Reference Index
Part NumberManufacturer
21516-1 Goodrich Aerospace Canada Ltd (CAN)
21516-1 Lockheed Martin Services, Llc (USA)
21516-1 PRIMARY Lockheed Martin Corp (USA)
Related Parts
2815-01-108-6526INTERCHANGEABLE
OIL PAN
215161
2920-01-266-9565INTERCHANGEABLE
GENERATOR,ENGINE ACCESSORY
6240-01-473-6770INTERCHANGEABLE
LAMP,GLOW
215-161

Frequently Asked Questions

What is NSN 5310-01-518-8204?

NSN 5310-01-518-8204 is a Nut,self-Locking,hexagon, manufactured by Lockheed Martin Corp, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-518-8204?

NSN 5310-01-518-8204 has 3 cross-referenced part numbers: 21516-1 (Goodrich Aerospace Canada Ltd), 21516-1 (Lockheed Martin Services, Llc), 21516-1 (Lockheed Martin Corp).

What NSN replaces 5310-01-518-8204?

There are 3 known substitutes for 5310-01-518-8204: 2815-01-108-6526, 2920-01-266-9565, 6240-01-473-6770. Verify interchangeability with system specifications before substitution.

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