PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

526-51Washer,flat

Cummins Power Generation Inc. · NSN 5310-00-391-3526 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-391-3526 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-391-3526. Primary manufacturer part number: 526-51.
Features
  • Washer,flat — FSC 5310
  • Material: COPPER ALLOY OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.437 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.307 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
  • Thickness: 0.031 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-391-3526, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cummins Power Generation 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-391-3526
Primary Part Number526-51
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCummins Power Generation Inc.
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.437 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
Hole Diameter0.307 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
Thickness0.031 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3455-00-021-2412 INTERCHANGEABLE
File,rotary
4730-00-289-19241-WBH-9443 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
3455-00-293-051408300 INTERCHANGEABLE
Cutter,milling,metal Slitting
Niagara Cutter Inc
5985-00-434-9107 INTERCHANGEABLE
Dummy Load,electrical
5310-00-595-6653 INTERCHANGEABLE
Washer,flat
5995-01-425-648652651 INTERCHANGEABLE
Cable Assembly,radio Frequency
C.e. Precision Assemblies, Llc
Cross-Reference Index
Part NumberManufacturer
526-51 PRIMARY Cummins Power Generation Inc. (USA)
Related Parts
3455-00-021-2412INTERCHANGEABLE
FILE,ROTARY
4730-00-289-1924INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
1-WBH-9443
3455-00-293-0514INTERCHANGEABLE
CUTTER,MILLING,METAL SLITTING
08300
5985-00-434-9107INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
5310-00-595-6653INTERCHANGEABLE
WASHER,FLAT
5995-01-425-6486INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
52651

Frequently Asked Questions

What is NSN 5310-00-391-3526?

NSN 5310-00-391-3526 is a Washer,flat, manufactured by Cummins Power Generation Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-391-3526?

NSN 5310-00-391-3526 has 1 cross-referenced part number: 526-51 (Cummins Power Generation Inc.).

What NSN replaces 5310-00-391-3526?

There are 6 known substitutes for 5310-00-391-3526: 3455-00-021-2412, 4730-00-289-1924, 3455-00-293-0514 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 526-51?

Key specifications for 526-51: Material: COPPER ALLOY OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Overall Diameter: 0.437 INCHES NOMINAL IN; 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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