PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W12Washer,flat

Mitsubishi Chemical Advanced Materials Inc. · NSN 5310-00-825-7816 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-825-7816 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-825-7816. Primary manufacturer part number: W12.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.266 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN
  • Material: PLASTIC OVERALL
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.517 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
  • Thickness: 0.016 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Plastic Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-825-7816, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mitsubishi Chemical Advanced Materials Inc.. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-825-7816
Primary Part NumberW12
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerMitsubishi Chemical Advanced Materials Inc.
StatusACTIVE
Hole Diameter0.266 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN
MaterialPLASTIC OVERALL
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.517 INCHES MINIMUM AND 0.523 INCHES MAXIMUM IN
Thickness0.016 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-010-626511X105 INTERCHANGEABLE
Washer,flat
Pdi Ground Support Systems, Inc.
5310-00-186-0971 INTERCHANGEABLE
Washer,key
3433-00-373-1736W-1-2 INTERCHANGEABLE
Tip,welding Torch
Victor Equipment Co
5945-00-960-4810W12 INTERCHANGEABLE
Heater
Ward Leonard Ct Llc
5120-01-063-3953 INTERCHANGEABLE
Socket,socket Wrench
5310-01-190-2087W-12 INTERCHANGEABLE
Washer,lock
Air & Liquid Systems Corporation Dba Buffalo Pumps
5315-01-191-7136 INTERCHANGEABLE
Pin,lock
5310-01-214-4897R007895L INTERCHANGEABLE
Washer,keyway
Meritor Industrial Products, Llc
2920-01-298-5447W-12 INTERCHANGEABLE
Relay-Solenoid,engine Starter,el
Fenner Fluid Power Inc
6250-01-300-7995W12 INTERCHANGEABLE
Lampholder
Lithonia Lighting National Services Industries Inc Div
Cross-Reference Index
Part NumberManufacturer
W12 PRIMARY Mitsubishi Chemical Advanced Materials Inc. (USA)
Related Parts
5310-00-010-6265INTERCHANGEABLE
WASHER,FLAT
11X105
5310-00-186-0971INTERCHANGEABLE
WASHER,KEY
3433-00-373-1736INTERCHANGEABLE
TIP,WELDING TORCH
W-1-2
5945-00-960-4810INTERCHANGEABLE
HEATER
W12
5120-01-063-3953INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5310-01-190-2087INTERCHANGEABLE
WASHER,LOCK
W-12
5315-01-191-7136INTERCHANGEABLE
PIN,LOCK
5310-01-214-4897INTERCHANGEABLE
WASHER,KEYWAY
R007895L
2920-01-298-5447INTERCHANGEABLE
RELAY-SOLENOID,ENGINE STARTER,EL
W-12
6250-01-300-7995INTERCHANGEABLE
LAMPHOLDER
W12
5310-01-449-7387INTERCHANGEABLE
WASHER,LOCK
88303 PC NO 21
5330-01-512-4223INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 5310-00-825-7816?

NSN 5310-00-825-7816 is a Washer,flat, manufactured by Mitsubishi Chemical Advanced Materials Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-825-7816?

NSN 5310-00-825-7816 has 1 cross-referenced part number: W12 (Mitsubishi Chemical Advanced Materials Inc.).

What NSN replaces 5310-00-825-7816?

There are 12 known substitutes for 5310-00-825-7816: 5310-00-010-6265, 5310-00-186-0971, 3433-00-373-1736 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W12?

Key specifications for W12: Hole Diameter: 0.266 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN; Material: PLASTIC OVERALL; Center Hole Shape Style: ROUND; Peripheral Shape Style: ROUND. 7 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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