PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0188-8Washer,flat

Lockheed Martin Corporation Div Rms · NSN 5310-00-262-5882 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-262-5882 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-262-5882. Primary manufacturer part number: 0188-8.
Features
  • Washer,flat — FSC 5310
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 316 OR STEEL COMP 321 OVERALL
  • Overall Diameter: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
  • Thickness: 0.052 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.169 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 301 or Steel Comp 302 or Steel Comp 303 or Steel Comp 316 or Steel Comp 321 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-262-5882, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-262-5882
Primary Part Number0188-8
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms
StatusCANCELLED
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
MaterialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 316 OR STEEL COMP 321 OVERALL
Overall Diameter0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
Thickness0.052 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.169 INCHES MINIMUM AND 0.179 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4140-00-215-607240953 INTERCHANGEABLE
Fan,centrifugal
L3harris Technologies, Inc Div Space & Airborne Systems
6220-00-299-46233001-24 INTERCHANGEABLE
Light,landing,aircraft
Grimes Aerospace Company
6130-01-415-465140953 INTERCHANGEABLE
Power Supply
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
5330-01-469-07884325-514AD-M83248 INTERCHANGEABLE
Seal,plain Encased
Minnesota Rubber Co
4730-01-527-5883P6MC8 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Parker-Hannifin Corp Div Parflex Division
5120-01-651-041640953 INTERCHANGEABLE
Handle,socket Wrench
S K Hand Tool Corp
Cross-Reference Index
Part NumberManufacturer
S8157N411-050 Honeywell International Inc. Div Aerospace - Torrance (USA)
0188-8 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
40953 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
0188-8 PRIMARY Lockheed Martin Corporation Div Rms (USA)
Related Parts
4140-00-215-6072INTERCHANGEABLE
FAN,CENTRIFUGAL
40953
6220-00-299-4623INTERCHANGEABLE
LIGHT,LANDING,AIRCRAFT
3001-24
6130-01-415-4651INTERCHANGEABLE
POWER SUPPLY
40953
5330-01-469-0788INTERCHANGEABLE
SEAL,PLAIN ENCASED
4325-514AD-M83248
4730-01-527-5883INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
P6MC8
5120-01-651-0416INTERCHANGEABLE
HANDLE,SOCKET WRENCH
40953

Frequently Asked Questions

What is NSN 5310-00-262-5882?

NSN 5310-00-262-5882 is a Washer,flat, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-262-5882?

NSN 5310-00-262-5882 has 4 cross-referenced part numbers: S8157N411-050 (Honeywell International Inc. Div Aerospace - Torrance), 0188-8 (Lockheed Martin Corporation Div Rms - Mitchel Field), 40953 (Lockheed Martin Corporation Div Rms - Mitchel Field), 0188-8 (Lockheed Martin Corporation Div Rms).

What NSN replaces 5310-00-262-5882?

There are 6 known substitutes for 5310-00-262-5882: 4140-00-215-6072, 6220-00-299-4623, 6130-01-415-4651 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0188-8?

Key specifications for 0188-8: Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 316 OR STEEL COMP 321 OVERALL; Overall Diameter: 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-262-5882 still in active supply?

NSN 5310-00-262-5882 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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