PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GT28Washer,flat

Bath Iron Works Corporation · NSN 5310-00-188-9680 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-188-9680 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-188-9680. Primary manufacturer part number: GT28.
Features
  • Washer,flat — FSC 5310
  • Material Document and Classification: MIL-A-17472 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: ASBESTOS OVERALL
  • Hole Diameter: 1.125 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 1.500 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Asbestos Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-188-9680, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Bath Iron Works Corporation. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, 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
NSN5310-00-188-9680
Primary Part NumberGT28
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerBath Iron Works Corporation
StatusACTIVE
Material Document and ClassificationMIL-A-17472 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialASBESTOS OVERALL
Hole Diameter1.125 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter1.500 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Thickness0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2590-00-830-89263E31 INTERCHANGEABLE
Cap,filler Opening
Chrysler Corp Service and Parts Opns
Cross-Reference Index
Part NumberManufacturer
GT28 PRIMARY Bath Iron Works Corporation (USA)
6323798 PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
M36530ALT3PC341 PRIMARY Bath Iron Works Corporation (USA)
51-448PC341 PRIMARY Bath Iron Works Corporation (USA)
6323798 Hercules Engine Co Inc (USA)
Related Parts
2590-00-830-8926INTERCHANGEABLE
CAP,FILLER OPENING
3E31

Frequently Asked Questions

What is NSN 5310-00-188-9680?

NSN 5310-00-188-9680 is a Washer,flat, manufactured by Bath Iron Works Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-188-9680?

NSN 5310-00-188-9680 has 5 cross-referenced part numbers: GT28 (Bath Iron Works Corporation), 6323798 (Brinkley Technology Group Llc Dba Hercules Manufacturing), M36530ALT3PC341 (Bath Iron Works Corporation), 51-448PC341 (Bath Iron Works Corporation), 6323798 (Hercules Engine Co Inc).

What NSN replaces 5310-00-188-9680?

There is 1 known substitute for 5310-00-188-9680: 2590-00-830-8926. Verify interchangeability with system specifications before substitution.

What are the specifications of GT28?

Key specifications for GT28: Material Document and Classification: MIL-A-17472 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Material: ASBESTOS OVERALL; Hole Diameter: 1.125 INCHES NOMINAL IN; Peripheral Shape Style: ROUND. 8 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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