PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0637Washer,flat

Borg-Warner Corp Marvel-Schebler/tillotson Div · NSN 5310-00-595-6552 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-595-6552 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-595-6552. Primary manufacturer part number: 0637.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
  • Center Hole Shape Style: ROUND
  • Nondefinitive Spec/std Data: A TYPE AND 1 GRADE AND E SERIES
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: COPPER ALLOY 11 OVERALL
  • Hole Diameter: 0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-B-613,1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy 11 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-595-6552, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Borg-Warner Corp Marvel-Schebler/tillotson Div. Government technical data includes 9 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-595-6552
Primary Part Number0637
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBorg-Warner Corp Marvel-Schebler/tillotson Div
StatusCANCELLED
Overall Diameter0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
Center Hole Shape StyleROUND
Nondefinitive Spec/std DataA TYPE AND 1 GRADE AND E SERIES
Cross-Sectional Shape StyleRECTANGULAR
MaterialCOPPER ALLOY 11 OVERALL
Hole Diameter0.214 INCHES MINIMUM AND 0.227 INCHES MAXIMUM IN
Material Document and ClassificationQQ-B-613,1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Thickness0.036 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5120-00-224-2496 INTERCHANGEABLE
Key,socket Head Screw
Cross-Reference Index
Part NumberManufacturer
0637 Borg-Warner Corp Marvel-Schebler/tillotson Div (USA)
FFW92 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-224-2496INTERCHANGEABLE
KEY,SOCKET HEAD SCREW

Frequently Asked Questions

What is NSN 5310-00-595-6552?

NSN 5310-00-595-6552 is a Washer,flat, manufactured by Borg-Warner Corp Marvel-Schebler/tillotson Div, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-595-6552?

NSN 5310-00-595-6552 has 2 cross-referenced part numbers: 0637 (Borg-Warner Corp Marvel-Schebler/tillotson Div), FFW92 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5310-00-595-6552?

There is 1 known substitute for 5310-00-595-6552: 5120-00-224-2496. Verify interchangeability with system specifications before substitution.

What are the specifications of 0637?

Key specifications for 0637: Overall Diameter: 0.495 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN; Center Hole Shape Style: ROUND; Nondefinitive Spec/std Data: A TYPE AND 1 GRADE AND E SERIES; Cross-Sectional Shape Style: RECTANGULAR. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-595-6552 still in active supply?

NSN 5310-00-595-6552 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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