PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25357Washer,flat

Williams International Co., L.l.c. · NSN 5310-01-013-5803 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-013-5803 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-013-5803. Primary manufacturer part number: 25357.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
  • Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM
  • Material: STEEL OR STEEL COMP 410 OVERALL
  • Material Document and Classification: 03-400,FSCM 24235 MFR REF 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
  • Overall Diameter: 1.735 INCHES MINIMUM AND 1.740 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel or Steel Comp 410 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-01-013-5803, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Williams International Co., L.l.c.. Government technical data includes 9 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-013-5803
Primary Part Number25357
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWilliams International Co., L.l.c.
StatusACTIVE
Thickness0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN
Hardness Rating25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM
MaterialSTEEL OR STEEL COMP 410 OVERALL
Material Document and Classification03-400,FSCM 24235 MFR REF 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Overall Diameter1.735 INCHES MINIMUM AND 1.740 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Hole Diameter1.300 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5930-01-025-7446FS-10798-25357 INTERCHANGEABLE
Switch,flow
Setra Systems, Inc. Dba Gems Sensors
6145-01-438-713225357 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden, Inc.
1005-01-544-169725357 INTERCHANGEABLE
Handle,gun Charger
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
25357 PRIMARY Williams International Co., L.l.c. (USA)
Related Parts
5930-01-025-7446INTERCHANGEABLE
SWITCH,FLOW
FS-10798-25357
6145-01-438-7132INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
25357
1005-01-544-1697INTERCHANGEABLE
HANDLE,GUN CHARGER
25357

Frequently Asked Questions

What is NSN 5310-01-013-5803?

NSN 5310-01-013-5803 is a Washer,flat, manufactured by Williams International Co., L.l.c., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-013-5803?

NSN 5310-01-013-5803 has 1 cross-referenced part number: 25357 (Williams International Co., L.l.c.).

What NSN replaces 5310-01-013-5803?

There are 3 known substitutes for 5310-01-013-5803: 5930-01-025-7446, 6145-01-438-7132, 1005-01-544-1697. Verify interchangeability with system specifications before substitution.

What are the specifications of 25357?

Key specifications for 25357: Thickness: 0.049 INCHES MINIMUM AND 0.051 INCHES MAXIMUM IN; Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 31.0 ROCKWELL C MAXIMUM; Material: STEEL OR STEEL COMP 410 OVERALL; Material Document and Classification: 03-400,FSCM 24235 MFR REF 1ST MATERIAL RESPONSE OR 66 FED STD 2ND MATERIAL RESPONSE OVERALL. 9 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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