PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12525Washer

Westerbeke Corporation · NSN 5310-01-257-9009 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-257-9009 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-257-9009. Primary manufacturer part number: 12525.
Features
  • Washer — FSC 5310
  • 1 verified cross-reference
  • Primary manufacturer: Westerbeke Corporation
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Washer, cataloged under National Stock Number 5310-01-257-9009, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Westerbeke Corporation. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameWasher
FSC / FSG5310 — No Item Name Available (FSG 53)
ManufacturersWesterbeke Corporation (CAGE 03798)
Technical Specifications
ParameterValue
NSN5310-01-257-9009
Primary Part Number12525
Item NameWasher
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerWesterbeke Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5950-00-137-809712525 INTERCHANGEABLE
Transformer,power
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5133-00-227-5967 INTERCHANGEABLE
Drill,twist
4330-00-231-70671252-5 INTERCHANGEABLE
Filter,fluid
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
4320-00-300-5798G116-25 INTERCHANGEABLE
Rod,valve
M.t. Davidson Company
4310-00-431-164912525 INTERCHANGEABLE
Plate,valve Stop
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
4820-01-285-9633 INTERCHANGEABLE
Parts Kit,valve
4820-01-474-3129 INTERCHANGEABLE
Parts Kit,check Valve
1377-01-519-40911252-6 INTERCHANGEABLE
Cartridge,impulse
Rockwell Collins Inc
5325-01-628-501712525 INTERCHANGEABLE
Ring,retaining
Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
1730-01-654-294312525 INTERCHANGEABLE
Leg Spring
Neuhaus Lp
Cross-Reference Index
Part NumberManufacturer
12525 PRIMARY Westerbeke Corporation (USA)
Related Parts
5950-00-137-8097INTERCHANGEABLE
TRANSFORMER,POWER
12525
5133-00-227-5967INTERCHANGEABLE
DRILL,TWIST
4330-00-231-7067INTERCHANGEABLE
FILTER,FLUID
1252-5
4320-00-300-5798INTERCHANGEABLE
ROD,VALVE
G116-25
4310-00-431-1649INTERCHANGEABLE
PLATE,VALVE STOP
12525
4820-01-285-9633INTERCHANGEABLE
PARTS KIT,VALVE
4820-01-474-3129INTERCHANGEABLE
PARTS KIT,CHECK VALVE
1377-01-519-4091INTERCHANGEABLE
CARTRIDGE,IMPULSE
1252-6
5325-01-628-5017INTERCHANGEABLE
RING,RETAINING
12525
1730-01-654-2943INTERCHANGEABLE
LEG SPRING
12525
4210-01-676-9802INTERCHANGEABLE
NOZZLE,FIRE EQUIPMENT
12525

Frequently Asked Questions

What is NSN 5310-01-257-9009?

NSN 5310-01-257-9009 is a Washer, manufactured by Westerbeke Corporation, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-257-9009?

NSN 5310-01-257-9009 has 1 cross-referenced part number: 12525 (Westerbeke Corporation).

What NSN replaces 5310-01-257-9009?

There are 11 known substitutes for 5310-01-257-9009: 5950-00-137-8097, 5133-00-227-5967, 4330-00-231-7067 and 8 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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