PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

856586Washer,key

Honeywell International, Inc Div Aerospace-Tucson · NSN 5310-00-028-4158 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-028-4158 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-028-4158. Primary manufacturer part number: 856586.
Features
  • Washer,key — FSC 5310
  • Outside Diameter: 0.312 INCHES NOMINAL IN
  • Angle Between External Keys: 75.0 DEGREES NOMINAL
  • Distance From Centerline to Inside of Prebent Key: 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
  • Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Style Designator: KEY
  • Material Thickness: 0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
  • External Key Quantity: 3
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1008 or Steel Comp 1009 or Steel Comp 1015 or Steel Comp 1018 or Steel Comp 1020 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-028-4158, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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
NSN5310-00-028-4158
Primary Part Number856586
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell International, Inc Div Aerospace-Tucson
StatusACTIVE
Outside Diameter0.312 INCHES NOMINAL IN
Angle Between External Keys75.0 DEGREES NOMINAL
Distance From Centerline to Inside of Prebent Key0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Style DesignatorKEY
Material Thickness0.021 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
External Key Quantity3
Surface TreatmentCADMIUM OVERALL
MaterialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OVERALL
Hole Diameter0.196 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN
External Prebent Key Length0.094 INCHES NOMINAL IN
External Prebent Key Width0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
External Prebent Key Angle15.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6670-00-678-2180685221PC18 INTERCHANGEABLE
Weight,trim,compass
Northrop Grumman Systems Corporation
5307-01-303-5712 INTERCHANGEABLE
Stud,welding
Cross-Reference Index
Part NumberManufacturer
856586 Bendix Corp the Bendix International Div (USA)
856586 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
856586 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
Related Parts
6670-00-678-2180INTERCHANGEABLE
WEIGHT,TRIM,COMPASS
685221PC18
5307-01-303-5712INTERCHANGEABLE
STUD,WELDING

Frequently Asked Questions

What is NSN 5310-00-028-4158?

NSN 5310-00-028-4158 is a Washer,key, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-028-4158?

NSN 5310-00-028-4158 has 3 cross-referenced part numbers: 856586 (Bendix Corp the Bendix International Div), 856586 (Honeywell International, Inc Div Aerospace-Tucson), 856586 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site).

What NSN replaces 5310-00-028-4158?

There are 2 known substitutes for 5310-00-028-4158: 6670-00-678-2180, 5307-01-303-5712. Verify interchangeability with system specifications before substitution.

What are the specifications of 856586?

Key specifications for 856586: Outside Diameter: 0.312 INCHES NOMINAL IN; Angle Between External Keys: 75.0 DEGREES NOMINAL; Distance From Centerline to Inside of Prebent Key: 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 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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