PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25023Washer,flat

Drs Environmental Systems Inc · NSN 5310-01-066-1898 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-066-1898 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-066-1898. Primary manufacturer part number: 25023.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Peripheral Shape Style: ROUND
  • Hole Diameter: 0.552 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
  • Overall Diameter: 1.024 INCHES NOMINAL IN
  • Thickness: 0.032 INCHES NOMINAL IN
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
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 5310-01-066-1898, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Drs Environmental Systems Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-066-1898
Primary Part Number25023
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerDrs Environmental Systems Inc
StatusACTIVE
MaterialSTEEL OVERALL
Peripheral Shape StyleROUND
Hole Diameter0.552 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN
Overall Diameter1.024 INCHES NOMINAL IN
Thickness0.032 INCHES NOMINAL IN
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-080504851 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Cnh Industrial America Llc Dba Cnh America
2520-00-112-008925-023 INTERCHANGEABLE
Transmission,vehicu
Erickson Corp
5905-00-113-02452502-3 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
General Microwave Corporation Div Kratos Microwave Electronics
5950-00-625-7133 INTERCHANGEABLE
Demagnetizer
5962-01-208-8540 INTERCHANGEABLE
Microcircuit,digital
4820-01-284-493925023-1016-1 INTERCHANGEABLE
Guide,valve Stem
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-284-591325023-805-1 INTERCHANGEABLE
Valve,float
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-284-600925023-804-1 INTERCHANGEABLE
Disk,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-292-438125023-1021-2 INTERCHANGEABLE
Seat,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4820-01-292-572025023-1007-1 INTERCHANGEABLE
Stem,fluid Valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
25023 Drs Environmental Systems Inc (USA)
25023 Davey Compressor Co Div of Keco Industries Inc (USA)
Related Parts
3110-00-100-0805INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
04851
2520-00-112-0089INTERCHANGEABLE
TRANSMISSION,VEHICU
25-023
5905-00-113-0245INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
2502-3
5950-00-625-7133INTERCHANGEABLE
DEMAGNETIZER
5962-01-208-8540INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
4820-01-284-4939INTERCHANGEABLE
GUIDE,VALVE STEM
25023-1016-1
4820-01-284-5913INTERCHANGEABLE
VALVE,FLOAT
25023-805-1
4820-01-284-6009INTERCHANGEABLE
DISK,VALVE
25023-804-1
4820-01-292-4381INTERCHANGEABLE
SEAT,VALVE
25023-1021-2
4820-01-292-5720INTERCHANGEABLE
STEM,FLUID VALVE
25023-1007-1
4820-01-292-5725INTERCHANGEABLE
RETAINER,DISK,VALVE
25023-1022-1
4820-01-292-5755INTERCHANGEABLE
FLOAT,VALVE
25023-805-2

Frequently Asked Questions

What is NSN 5310-01-066-1898?

NSN 5310-01-066-1898 is a Washer,flat, manufactured by Drs Environmental Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-066-1898?

NSN 5310-01-066-1898 has 2 cross-referenced part numbers: 25023 (Drs Environmental Systems Inc), 25023 (Davey Compressor Co Div of Keco Industries Inc).

What NSN replaces 5310-01-066-1898?

There are 12 known substitutes for 5310-01-066-1898: 3110-00-100-0805, 2520-00-112-0089, 5905-00-113-0245 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25023?

Key specifications for 25023: Material: STEEL OVERALL; Peripheral Shape Style: ROUND; Hole Diameter: 0.552 INCHES MINIMUM AND 0.555 INCHES MAXIMUM IN; Overall Diameter: 1.024 INCHES NOMINAL IN. 8 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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