PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3657Washer,flat

New Haven Mfg Corp · NSN 5310-00-828-0425 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-828-0425 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-828-0425. Primary manufacturer part number: 3657.
Features
  • Washer,flat — FSC 5310
  • Material: WOOL OVERALL
  • Hole Diameter: 0.312 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Thickness: 0.062 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Overall Diameter: 0.500 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Wool Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-828-0425, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is New Haven Mfg Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-828-0425
Primary Part Number3657
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNew Haven Mfg Corp
StatusCANCELLED
MaterialWOOL OVERALL
Hole Diameter0.312 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Thickness0.062 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Overall Diameter0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4820-00-076-2094365-7 INTERCHANGEABLE
Cartridge,shut-Off Valve
Admiral Valve Llc Dba Cpv Manufacturing
5220-00-215-22083657 INTERCHANGEABLE
Gage
General Motors Llc Dba General Motors Llc
5120-00-288-65013657 INTERCHANGEABLE
Head,crowfoot Socket Wrench
Wta Tool Llc
5120-01-162-0327 INTERCHANGEABLE
Blade,nutdriver
5950-01-264-685211842 INTERCHANGEABLE
Transformer,current
Sora Power Inc. Dba Sigma Division
4320-01-355-7400 INTERCHANGEABLE
Pump,centrifugal
5315-01-680-59113657 INTERCHANGEABLE
Pin,straight,headed
Buffalo Turbine Defense Llc
Cross-Reference Index
Part NumberManufacturer
3657 New Haven Mfg Corp (USA)
03657 New Haven Mfg Corp (USA)
Related Parts
4820-00-076-2094INTERCHANGEABLE
CARTRIDGE,SHUT-OFF VALVE
365-7
5220-00-215-2208INTERCHANGEABLE
GAGE
3657
5120-00-288-6501INTERCHANGEABLE
HEAD,CROWFOOT SOCKET WRENCH
3657
5120-01-162-0327INTERCHANGEABLE
BLADE,NUTDRIVER
5950-01-264-6852INTERCHANGEABLE
TRANSFORMER,CURRENT
11842
4320-01-355-7400INTERCHANGEABLE
PUMP,CENTRIFUGAL
5315-01-680-5911INTERCHANGEABLE
PIN,STRAIGHT,HEADED
3657

Frequently Asked Questions

What is NSN 5310-00-828-0425?

NSN 5310-00-828-0425 is a Washer,flat, manufactured by New Haven Mfg Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-828-0425?

NSN 5310-00-828-0425 has 2 cross-referenced part numbers: 3657 (New Haven Mfg Corp), 03657 (New Haven Mfg Corp).

What NSN replaces 5310-00-828-0425?

There are 7 known substitutes for 5310-00-828-0425: 4820-00-076-2094, 5220-00-215-2208, 5120-00-288-6501 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3657?

Key specifications for 3657: Material: WOOL OVERALL; Hole Diameter: 0.312 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Center Hole Shape Style: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-828-0425 still in active supply?

NSN 5310-00-828-0425 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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