PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LS5984D5MWasher,flat

Lockheed Martin Corp · NSN 5310-00-450-8021 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-450-8021 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-450-8021. Primary manufacturer part number: LS5984D5M.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
  • Thickness: 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
  • Surface Treatment Document and Classification: MIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
  • Hole Diameter: 0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy 2024 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-450-8021, 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. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-450-8021
Primary Part NumberLS5984D5M
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusCANCELLED
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
Material Document and ClassificationQQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Thickness0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationMIL-C-5541 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
Hole Diameter0.319 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
Surface TreatmentCHROMATE OR ANODIZE OVERALL
MaterialALUMINUM ALLOY 2024 OVERALL
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-151-7982163 INSULATOR INTERCHANGEABLE
Insulator,bushing
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
2520-00-217-93226440103 INTERCHANGEABLE
Parts Kit,universal Joint
Ed Etnyre & Co
5310-00-285-8881934 INTERCHANGEABLE
Washer,flat
Triumph Engine Control Systems Llc
3010-00-297-1087T1009346 INTERCHANGEABLE
Coupling,shaft,rigid
Grimes Aerospace Company
3020-00-318-6671 INTERCHANGEABLE
Pinion,intermediate
3040-00-488-8389 INTERCHANGEABLE
Lining Set,friction
4910-00-554-8004 INTERCHANGEABLE
Tank,testing,tire and Tube
5960-00-755-1087 INTERCHANGEABLE
Electron Tube
6760-00-831-7914 INTERCHANGEABLE
Lens,camera,general Photographic
6125-00-983-4590934 INTERCHANGEABLE
Board Assembly,circ
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
Cross-Reference Index
Part NumberManufacturer
934 Zf Industrieantriebe Witten Gmbh (DEU)
LS5984D5M PRIMARY Lockheed Martin Corp (USA)
Related Parts
5970-00-151-7982INTERCHANGEABLE
INSULATOR,BUSHING
163 INSULATOR
2520-00-217-9322INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
6440103
5310-00-285-8881INTERCHANGEABLE
WASHER,FLAT
934
3010-00-297-1087INTERCHANGEABLE
COUPLING,SHAFT,RIGID
T1009346
3020-00-318-6671INTERCHANGEABLE
PINION,INTERMEDIATE
3040-00-488-8389INTERCHANGEABLE
LINING SET,FRICTION
4910-00-554-8004INTERCHANGEABLE
TANK,TESTING,TIRE AND TUBE
5960-00-755-1087INTERCHANGEABLE
ELECTRON TUBE
6760-00-831-7914INTERCHANGEABLE
LENS,CAMERA,GENERAL PHOTOGRAPHIC
6125-00-983-4590INTERCHANGEABLE
BOARD ASSEMBLY,CIRC
934
6240-01-021-5354INTERCHANGEABLE
LAMP,CARTRIDGE
934
5905-01-097-4946INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
934

Frequently Asked Questions

What is NSN 5310-00-450-8021?

NSN 5310-00-450-8021 is a Washer,flat, manufactured by Lockheed Martin Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-450-8021?

NSN 5310-00-450-8021 has 2 cross-referenced part numbers: 934 (Zf Industrieantriebe Witten Gmbh), LS5984D5M (Lockheed Martin Corp).

What NSN replaces 5310-00-450-8021?

There are 12 known substitutes for 5310-00-450-8021: 5970-00-151-7982, 2520-00-217-9322, 5310-00-285-8881 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LS5984D5M?

Key specifications for LS5984D5M: Cross-Sectional Shape Style: RECTANGULAR; Overall Diameter: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/5 T3 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/5 T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Center Hole Shape Style: ROUND. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-450-8021 still in active supply?

NSN 5310-00-450-8021 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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