PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

10187Washer,flat

Honeywell International Inc Dba Honeywell International · NSN 5310-00-522-3178 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-522-3178 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-522-3178. Primary manufacturer part number: 10187.
Features
  • Washer,flat — FSC 5310
  • Surface Treatment: CADMIUM OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Material: STEEL COMP 1010 OVERALL
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Hole Diameter: 0.255 INCHES NOMINAL IN
  • Overall Diameter: 0.375 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1010 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-522-3178, 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 Dba Honeywell International. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-522-3178
Primary Part Number10187
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerHoneywell International Inc Dba Honeywell International
StatusCANCELLED
Surface TreatmentCADMIUM OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
MaterialSTEEL COMP 1010 OVERALL
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hole Diameter0.255 INCHES NOMINAL IN
Overall Diameter0.375 INCHES NOMINAL IN
Thickness0.031 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-058241286 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5310-00-262-3034 INTERCHANGEABLE
Washer,flat
3110-00-293-907213195-37 INTERCHANGEABLE
Bearing,roller,tapered
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
5975-00-503-4634301853-1 INTERCHANGEABLE
Conduit,metal,flexible
L3harris Technologies, Inc. Dba Harris Corporation
5835-00-554-0399DE-C-2658-1 INTERCHANGEABLE
Tape,sound Recording
U S Dept of Transportation Federal Aviation Administration
5305-00-619-1176 INTERCHANGEABLE
Screw,machine
4320-00-672-750517094P INTERCHANGEABLE
Ring,wearing
Curtiss-Wright Electro-Mechanical Corporation Div Epd
2530-00-773-550810187 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Titan Distribution Inc Dba Titan Tire
5977-00-895-351310187 INTERCHANGEABLE
Brush,electrical Contact
Miraj Corp
4470-01-077-6029 INTERCHANGEABLE
Guide,core
Cross-Reference Index
Part NumberManufacturer
10187 PRIMARY Honeywell International Inc Dba Honeywell International (USA)
10187 Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA)
10187 PRIMARY Honeywell International, Inc Div Aerospace-Tucson (USA)
10187 Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems (USA)
Related Parts
3110-00-100-0582INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
41286
5310-00-262-3034INTERCHANGEABLE
WASHER,FLAT
3110-00-293-9072INTERCHANGEABLE
BEARING,ROLLER,TAPERED
13195-37
5975-00-503-4634INTERCHANGEABLE
CONDUIT,METAL,FLEXIBLE
301853-1
5835-00-554-0399INTERCHANGEABLE
TAPE,SOUND RECORDING
DE-C-2658-1
5305-00-619-1176INTERCHANGEABLE
SCREW,MACHINE
4320-00-672-7505INTERCHANGEABLE
RING,WEARING
17094P
2530-00-773-5508INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
10187
5977-00-895-3513INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
10187
4470-01-077-6029INTERCHANGEABLE
GUIDE,CORE
5305-01-138-3658INTERCHANGEABLE
SCREW,MACHINE
5945-01-265-8589INTERCHANGEABLE
RELAY ASSEMBLY

Frequently Asked Questions

What is NSN 5310-00-522-3178?

NSN 5310-00-522-3178 is a Washer,flat, manufactured by Honeywell International Inc Dba Honeywell International, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-522-3178?

NSN 5310-00-522-3178 has 4 cross-referenced part numbers: 10187 (Honeywell International Inc Dba Honeywell International), 10187 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site), 10187 (Honeywell International, Inc Div Aerospace-Tucson), 10187 (Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems).

What NSN replaces 5310-00-522-3178?

There are 12 known substitutes for 5310-00-522-3178: 3110-00-100-0582, 5310-00-262-3034, 3110-00-293-9072 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 10187?

Key specifications for 10187: Surface Treatment: CADMIUM OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 1010 OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-522-3178 still in active supply?

NSN 5310-00-522-3178 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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