PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56598Washer,flat

Kleinschmidt Inc · NSN 5310-00-722-1988 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-722-1988 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-722-1988. Primary manufacturer part number: 56598.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Center Hole Shape Style: ROUND
  • Material: COPPER ALLOY OVERALL
  • Hole Diameter: 0.141 INCHES NOMINAL IN
  • Thickness: 0.024 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Overall Diameter: 0.188 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-722-1988, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-722-1988
Primary Part Number56598
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusACTIVE
Peripheral Shape StyleROUND
Center Hole Shape StyleROUND
MaterialCOPPER ALLOY OVERALL
Hole Diameter0.141 INCHES NOMINAL IN
Thickness0.024 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Overall Diameter0.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5930-00-438-6767 INTERCHANGEABLE
Switch,rotary
5365-00-734-538556598 INTERCHANGEABLE
Plug,machine Thread
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
56598 Kleinschmidt Inc (USA)
Related Parts
5930-00-438-6767INTERCHANGEABLE
SWITCH,ROTARY
5365-00-734-5385INTERCHANGEABLE
PLUG,MACHINE THREAD
56598

Frequently Asked Questions

What is NSN 5310-00-722-1988?

NSN 5310-00-722-1988 is a Washer,flat, manufactured by Kleinschmidt Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-722-1988?

NSN 5310-00-722-1988 has 1 cross-referenced part number: 56598 (Kleinschmidt Inc).

What NSN replaces 5310-00-722-1988?

There are 2 known substitutes for 5310-00-722-1988: 5930-00-438-6767, 5365-00-734-5385. Verify interchangeability with system specifications before substitution.

What are the specifications of 56598?

Key specifications for 56598: Peripheral Shape Style: ROUND; Center Hole Shape Style: ROUND; Material: COPPER ALLOY OVERALL; Hole Diameter: 0.141 INCHES NOMINAL IN. 7 total characteristics are documented in the Federal Logistics Information System.

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