PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

320957Washer,flat

Circor Pumps North America Llc · NSN 5310-00-338-4019 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-338-4019 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-338-4019. Primary manufacturer part number: 320957.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Overall Diameter: 1.500 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Peripheral Shape Style: ROUND
  • Thickness: 0.026 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Hole Diameter: 1.015 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-338-4019, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Pumps North America Llc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-338-4019
Primary Part Number320957
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCircor Pumps North America Llc
StatusCANCELLED
MaterialSTEEL OVERALL
Overall Diameter1.500 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Peripheral Shape StyleROUND
Thickness0.026 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Hole Diameter1.015 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3120-00-287-71321838670 INTERCHANGEABLE
Bearing,sleeve
Mack Trucks Inc Parts Opn
2995-01-225-2296320957 INTERCHANGEABLE
Valve Assembly,anti-Icing,jet En
Meggitt North Hollywood Inc
Cross-Reference Index
Part NumberManufacturer
7319166 Zf Industrieantriebe Witten Gmbh (DEU)
EW2200PPC620 DC Fabricators Inc (USA)
320957 PRIMARY Circor Pumps North America Llc (USA)
57535-44 Zf Industrieantriebe Witten Gmbh (DEU)
320957 Siemens Energy, Inc. (USA)
EW2200TPC620 Siemens Energy, Inc. (USA)
EW2200TPC620 Circor Pumps North America Llc (USA)
EW2200TPC620 DC Fabricators Inc (USA)
58379-44 Zf Industrieantriebe Witten Gmbh (DEU)
EW2200PPC620 Siemens Energy, Inc. (USA)
Related Parts
3120-00-287-7132INTERCHANGEABLE
BEARING,SLEEVE
1838670
2995-01-225-2296INTERCHANGEABLE
VALVE ASSEMBLY,ANTI-ICING,JET EN
320957

Frequently Asked Questions

What is NSN 5310-00-338-4019?

NSN 5310-00-338-4019 is a Washer,flat, manufactured by Circor Pumps North America Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-338-4019?

NSN 5310-00-338-4019 has 10 cross-referenced part numbers: 7319166 (Zf Industrieantriebe Witten Gmbh), EW2200PPC620 (DC Fabricators Inc), 320957 (Circor Pumps North America Llc), 57535-44 (Zf Industrieantriebe Witten Gmbh), 320957 (Siemens Energy, Inc.) and 5 more.

What NSN replaces 5310-00-338-4019?

There are 2 known substitutes for 5310-00-338-4019: 3120-00-287-7132, 2995-01-225-2296. Verify interchangeability with system specifications before substitution.

What are the specifications of 320957?

Key specifications for 320957: Material: STEEL OVERALL; Overall Diameter: 1.500 INCHES NOMINAL IN; Center Hole Shape Style: ROUND; Peripheral Shape Style: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-338-4019 still in active supply?

NSN 5310-00-338-4019 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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