PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31286Washer,flat

Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. · NSN 5310-00-637-2105 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-637-2105 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-637-2105. Primary manufacturer part number: 31286.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: AMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6455 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 6150 OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.031 INCHES NOMINAL IN
  • Hole Diameter: 0.516 INCHES NOMINAL IN
  • Thickness: 0.094 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 6150 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-637-2105, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 8 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
NSN5310-00-637-2105
Primary Part Number31286
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
StatusACTIVE
Material Document and ClassificationAMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6455 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 6150 OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Overall Diameter1.031 INCHES NOMINAL IN
Hole Diameter0.516 INCHES NOMINAL IN
Thickness0.094 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-450-662631286 INTERCHANGEABLE
Tee,tube
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5310-01-661-402631286 INTERCHANGEABLE
Nut,self-Locking,round
Eaton Corp Aerospace Fluid Conveyance
Cross-Reference Index
Part NumberManufacturer
31286 PRIMARY Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
4730-00-450-6626INTERCHANGEABLE
TEE,TUBE
31286
5310-01-661-4026INTERCHANGEABLE
NUT,SELF-LOCKING,ROUND
31286

Frequently Asked Questions

What is NSN 5310-00-637-2105?

NSN 5310-00-637-2105 is a Washer,flat, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-637-2105?

NSN 5310-00-637-2105 has 1 cross-referenced part number: 31286 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 5310-00-637-2105?

There are 2 known substitutes for 5310-00-637-2105: 4730-00-450-6626, 5310-01-661-4026. Verify interchangeability with system specifications before substitution.

What are the specifications of 31286?

Key specifications for 31286: Material Document and Classification: AMS 6448 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6455 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 6150 OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Center Hole Shape Style: ROUND. 8 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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