PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

207493Washer,key

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 5310-00-638-0218 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-638-0218 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-638-0218. Primary manufacturer part number: 207493.
Features
  • Washer,key — FSC 5310
  • Hole Diameter: 1.160 INCHES MINIMUM AND 1.170 INCHES MAXIMUM IN
  • Material Thickness: 0.005 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
  • Style Designator: KEY
  • Outside Diameter: 1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN
  • Internal Straight Key Width: 0.100 INCHES NOMINAL IN
  • Distance From Centerline to Top of Internal Key: 0.575 INCHES NOMINAL IN
  • Material: COPPER ALLOY OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-638-0218, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 9 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-638-0218
Primary Part Number207493
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Hole Diameter1.160 INCHES MINIMUM AND 1.170 INCHES MAXIMUM IN
Material Thickness0.005 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
Style DesignatorKEY
Outside Diameter1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN
Internal Straight Key Width0.100 INCHES NOMINAL IN
Distance From Centerline to Top of Internal Key0.575 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Surface TreatmentCADMIUM OVERALL
Internal Key Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-01-267-9445 INTERCHANGEABLE
Ball,valve,ported
Cross-Reference Index
Part NumberManufacturer
207493 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
4820-01-267-9445INTERCHANGEABLE
BALL,VALVE,PORTED

Frequently Asked Questions

What is NSN 5310-00-638-0218?

NSN 5310-00-638-0218 is a Washer,key, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-638-0218?

NSN 5310-00-638-0218 has 1 cross-referenced part number: 207493 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 5310-00-638-0218?

There is 1 known substitute for 5310-00-638-0218: 4820-01-267-9445. Verify interchangeability with system specifications before substitution.

What are the specifications of 207493?

Key specifications for 207493: Hole Diameter: 1.160 INCHES MINIMUM AND 1.170 INCHES MAXIMUM IN; Material Thickness: 0.005 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN; Style Designator: KEY; Outside Diameter: 1.345 INCHES MINIMUM AND 1.355 INCHES MAXIMUM IN. 9 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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