PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W222-37Washer,flat

Enerpac Tool Group Corp · NSN 5310-00-245-5446 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-245-5446 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-245-5446. Primary manufacturer part number: W222-37.
Features
  • Washer,flat — FSC 5310
  • Overall Diameter: 0.312 INCHES NOMINAL IN
  • Hole Diameter: 0.203 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Material: COPPER OVERALL
  • Thickness: 0.031 INCHES NOMINAL IN
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 5310-00-245-5446, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Enerpac Tool Group Corp. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-245-5446
Primary Part NumberW222-37
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEnerpac Tool Group Corp
StatusCANCELLED
Overall Diameter0.312 INCHES NOMINAL IN
Hole Diameter0.203 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
MaterialCOPPER OVERALL
Thickness0.031 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4320-00-338-312351937 INTERCHANGEABLE
Revolving Group
Eaton Aerospace, Llc Dba Jackson South
5985-00-501-464219020 INTERCHANGEABLE
Coupler,directional
Frontgrade Technologies Inc.
6650-00-526-4239S19006 INTERCHANGEABLE
Magnifier
Fisher Scientific Co
5821-00-617-5869 INTERCHANGEABLE
Control,radio Set
5310-00-641-1218190582 INTERCHANGEABLE
Washer,flat
Woodward, Inc.
5305-00-988-1169 INTERCHANGEABLE
Screw,machine
5330-01-011-152819020 INTERCHANGEABLE
Gasket
Ritchie Engineering Co Inc
2590-01-238-548058937 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5910-01-299-2800 INTERCHANGEABLE
Capacitor,variable,air Dielectri
4510-01-304-8308 INTERCHANGEABLE
Drain,bathtub
Cross-Reference Index
Part NumberManufacturer
X349 Kenworth Truck Co a Div of Paccar Inc (USA)
W222-37 PRIMARY Enerpac Tool Group Corp (USA)
51937 Stewart-Warner Alemite Sales Co Inc (USA)
MILW1165 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
19020 Dana Automotive Systems Group, Llc Dba Dana Sealing Products (USA)
W222-37 Applied Power Inc Power Packer (USA)
190582 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
4320-00-338-3123INTERCHANGEABLE
REVOLVING GROUP
51937
5985-00-501-4642INTERCHANGEABLE
COUPLER,DIRECTIONAL
19020
6650-00-526-4239INTERCHANGEABLE
MAGNIFIER
S19006
5821-00-617-5869INTERCHANGEABLE
CONTROL,RADIO SET
5310-00-641-1218INTERCHANGEABLE
WASHER,FLAT
190582
5305-00-988-1169INTERCHANGEABLE
SCREW,MACHINE
5330-01-011-1528INTERCHANGEABLE
GASKET
19020
2590-01-238-5480INTERCHANGEABLE
FILTER ELEMENT,FLUID
58937
5910-01-299-2800INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
4510-01-304-8308INTERCHANGEABLE
DRAIN,BATHTUB
6550-01-325-8779INTERCHANGEABLE
BACTERIA CULTURE CONTROL DISCS
R19020
5915-01-345-9070INTERCHANGEABLE
FILTER,LOW PASS
190-20

Frequently Asked Questions

What is NSN 5310-00-245-5446?

NSN 5310-00-245-5446 is a Washer,flat, manufactured by Enerpac Tool Group Corp, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-245-5446?

NSN 5310-00-245-5446 has 7 cross-referenced part numbers: X349 (Kenworth Truck Co a Div of Paccar Inc), W222-37 (Enerpac Tool Group Corp), 51937 (Stewart-Warner Alemite Sales Co Inc), MILW1165 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 19020 (Dana Automotive Systems Group, Llc Dba Dana Sealing Products) and 2 more.

What NSN replaces 5310-00-245-5446?

There are 12 known substitutes for 5310-00-245-5446: 4320-00-338-3123, 5985-00-501-4642, 6650-00-526-4239 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W222-37?

Key specifications for W222-37: Overall Diameter: 0.312 INCHES NOMINAL IN; Hole Diameter: 0.203 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-245-5446 still in active supply?

NSN 5310-00-245-5446 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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