PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

186608Washer,key

Honeywell International Inc Div Aerospace-South Bend (bendix Dr) · NSN 5310-00-639-3995 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-639-3995 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-639-3995. Primary manufacturer part number: 186608.
Features
  • Washer,key — FSC 5310
  • External Key Quantity: 3
  • Hole Diameter: 0.174 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
  • Outside Diameter: 0.250 INCHES NOMINAL IN
  • Material Document and Classification: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material Thickness: 0.012 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
  • External Straight Key Width: 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
  • Overall Distance Including Keys: 0.500 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 302 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-639-3995, 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-South Bend (bendix Dr). 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
NSN5310-00-639-3995
Primary Part Number186608
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell International Inc Div Aerospace-South Bend (bendix Dr)
StatusACTIVE
External Key Quantity3
Hole Diameter0.174 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
Outside Diameter0.250 INCHES NOMINAL IN
Material Document and ClassificationAMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.012 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN
External Straight Key Width0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
Overall Distance Including Keys0.500 INCHES NOMINAL IN
Style DesignatorKEY
MaterialSTEEL COMP 302 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-00-054-6866 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
186608 PRIMARY Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA)
Related Parts
5331-00-054-6866INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5310-00-639-3995?

NSN 5310-00-639-3995 is a Washer,key, manufactured by Honeywell International Inc Div Aerospace-South Bend (bendix Dr), classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-639-3995?

NSN 5310-00-639-3995 has 1 cross-referenced part number: 186608 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)).

What NSN replaces 5310-00-639-3995?

There is 1 known substitute for 5310-00-639-3995: 5331-00-054-6866. Verify interchangeability with system specifications before substitution.

What are the specifications of 186608?

Key specifications for 186608: External Key Quantity: 3; Hole Diameter: 0.174 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN; Outside Diameter: 0.250 INCHES NOMINAL IN; Material Document and Classification: AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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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