PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56494Washer,flat

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5310-00-571-9709 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-571-9709 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-571-9709. Primary manufacturer part number: 56494.
Features
  • Washer,flat — FSC 5310
  • Thickness: 0.031 INCHES NOMINAL IN
  • Material: NICKEL OR NICKEL ALLOY 400 OVERALL
  • Material Document and Classification: ASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 1.280 INCHES NOMINAL IN
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel or Nickel Alloy 400 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-571-9709, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-571-9709
Primary Part Number56494
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusCANCELLED
Thickness0.031 INCHES NOMINAL IN
MaterialNICKEL OR NICKEL ALLOY 400 OVERALL
Material Document and ClassificationASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL
Center Hole Shape StyleROUND
Hole Diameter1.280 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter2.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
1020-00-344-5153293858PC1 INTERCHANGEABLE
Valve,relief
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6645-01-102-81274867466-7 INTERCHANGEABLE
Meter,time Totalizing
Kalmar AC Inc
5365-01-321-339656494 INTERCHANGEABLE
Plug,machine Thread
Altra Industrial Motion Corp.
Cross-Reference Index
Part NumberManufacturer
5310PL1280132 Jednolity Indeks Materialowy - Uniform Material Index (POL)
5649-031 THK Zf Industrieantriebe Witten Gmbh (DEU)
56494-031IN THK Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
056494 Zf Industrieantriebe Witten Gmbh (DEU)
56494-.031 THK Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
56494 PRIMARY Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
7250045-029 Zf Industrieantriebe Witten Gmbh (DEU)
56494-.031IN TH K Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
1020-00-344-5153INTERCHANGEABLE
VALVE,RELIEF
293858PC1
6645-01-102-8127INTERCHANGEABLE
METER,TIME TOTALIZING
4867466-7
5365-01-321-3396INTERCHANGEABLE
PLUG,MACHINE THREAD
56494

Frequently Asked Questions

What is NSN 5310-00-571-9709?

NSN 5310-00-571-9709 is a Washer,flat, manufactured by Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp., classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-571-9709?

NSN 5310-00-571-9709 has 8 cross-referenced part numbers: 5310PL1280132 (Jednolity Indeks Materialowy - Uniform Material Index), 5649-031 THK (Zf Industrieantriebe Witten Gmbh), 56494-031IN THK (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.), 056494 (Zf Industrieantriebe Witten Gmbh), 56494-.031 THK (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.) and 3 more.

What NSN replaces 5310-00-571-9709?

There are 3 known substitutes for 5310-00-571-9709: 1020-00-344-5153, 6645-01-102-8127, 5365-01-321-3396. Verify interchangeability with system specifications before substitution.

What are the specifications of 56494?

Key specifications for 56494: Thickness: 0.031 INCHES NOMINAL IN; Material: NICKEL OR NICKEL ALLOY 400 OVERALL; Material Document and Classification: ASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL; Center Hole Shape Style: ROUND. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-571-9709 still in active supply?

NSN 5310-00-571-9709 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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