PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18501Washer,flat

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5310-00-461-8858 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-461-8858 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-461-8858. Primary manufacturer part number: 18501.
Features
  • Washer,flat — FSC 5310
  • Hole Diameter: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Thickness: 0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
  • Peripheral Shape Style: ROUND
  • Surface Treatment: CADMIUM OVERALL
  • 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 5310-00-461-8858, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 8 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-461-8858
Primary Part Number18501
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Hole Diameter0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Thickness0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
Peripheral Shape StyleROUND
Surface TreatmentCADMIUM OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Overall Diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
2810-00-118-8092 INTERCHANGEABLE
Tube
6625-00-643-30488D049XMR200 INTERCHANGEABLE
Meter,modulation
General Electric Company
5310-00-816-27165105-43H INTERCHANGEABLE
Washer,lock
Rotor Clip Company, Inc.
4240-01-134-7139 INTERCHANGEABLE
Carabiner
6520-01-259-093318501 INTERCHANGEABLE
Resin,acrylic,dental
Kerr Corporation
5310-01-333-632618501 INTERCHANGEABLE
Washer,flat
Stanadyne Corporation Dba Stanadyne Diesel Systems
4720-01-493-1751N9DS2-50 INTERCHANGEABLE
Hose Assembly,nonmetallic
Nycoil Co
4730-01-507-2443 INTERCHANGEABLE
Reducer,exhaust
Cross-Reference Index
Part NumberManufacturer
18501 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
2810-00-118-8092INTERCHANGEABLE
TUBE
6625-00-643-3048INTERCHANGEABLE
METER,MODULATION
8D049XMR200
5310-00-816-2716INTERCHANGEABLE
WASHER,LOCK
5105-43H
4240-01-134-7139INTERCHANGEABLE
CARABINER
6520-01-259-0933INTERCHANGEABLE
RESIN,ACRYLIC,DENTAL
18501
5310-01-333-6326INTERCHANGEABLE
WASHER,FLAT
18501
4720-01-493-1751INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
N9DS2-50
4730-01-507-2443INTERCHANGEABLE
REDUCER,EXHAUST

Frequently Asked Questions

What is NSN 5310-00-461-8858?

NSN 5310-00-461-8858 is a Washer,flat, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-461-8858?

NSN 5310-00-461-8858 has 1 cross-referenced part number: 18501 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 5310-00-461-8858?

There are 8 known substitutes for 5310-00-461-8858: 2810-00-118-8092, 6625-00-643-3048, 5310-00-816-2716 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18501?

Key specifications for 18501: Hole Diameter: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Material: STEEL OVERALL; Thickness: 0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN; Peripheral Shape Style: ROUND. 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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