PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1AB2131Washer,flat

Fwd Seagrave Holdings Lp · NSN 5310-00-271-7427 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-271-7427 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-271-7427. Primary manufacturer part number: 1AB2131.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.750 INCHES NOMINAL IN
  • Material: COPPER OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.031 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
  • Hole Diameter: 0.515 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-271-7427, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fwd Seagrave Holdings Lp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-271-7427
Primary Part Number1AB2131
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFwd Seagrave Holdings Lp
StatusCANCELLED
Overall Diameter0.750 INCHES NOMINAL IN
MaterialCOPPER OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.031 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
Hole Diameter0.515 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-144-85611213 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
5945-00-665-7689 INTERCHANGEABLE
Relay,thermal
Cross-Reference Index
Part NumberManufacturer
487A4 Diamond Reo Truck Co (USA)
B2131 Dresser Industries Inc Waukesha Engine Div (USA)
5E6466 Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
B2131 Cnh Industrial America Llc Dba Cnh America (USA)
514G1 Diamond Reo Truck Co (USA)
1AB2131 PRIMARY Fwd Seagrave Holdings Lp (USA)
876018 Dana Off Highway Products, Llc (USA)
B2131 Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
876018 Clark Equipment Co (USA)
B2131 PRIMARY Dresser, Llc (USA)
Related Parts
3110-00-144-8561INTERCHANGEABLE
BEARING,BALL,ANNULAR
1213
5945-00-665-7689INTERCHANGEABLE
RELAY,THERMAL

Frequently Asked Questions

What is NSN 5310-00-271-7427?

NSN 5310-00-271-7427 is a Washer,flat, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-271-7427?

NSN 5310-00-271-7427 has 10 cross-referenced part numbers: 487A4 (Diamond Reo Truck Co), B2131 (Dresser Industries Inc Waukesha Engine Div), 5E6466 (Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)), B2131 (Cnh Industrial America Llc Dba Cnh America), 514G1 (Diamond Reo Truck Co) and 5 more.

What NSN replaces 5310-00-271-7427?

There are 2 known substitutes for 5310-00-271-7427: 3110-00-144-8561, 5945-00-665-7689. Verify interchangeability with system specifications before substitution.

What are the specifications of 1AB2131?

Key specifications for 1AB2131: Overall Diameter: 0.750 INCHES NOMINAL IN; Material: COPPER OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Thickness: 0.031 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-271-7427 still in active supply?

NSN 5310-00-271-7427 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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