PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21089Washer,flat

Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. · NSN 5310-01-099-0386 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-099-0386 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-099-0386. Primary manufacturer part number: 21089.
Features
  • Washer,flat — FSC 5310
  • Center Hole Shape Style: ROUND
  • Material: COPPER ALLOY OVERALL
  • Color: YELLOW OVERALL
  • Outside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL
  • Cross-Sectional Shape Style: BLANK RECTANGULAR
  • Peripheral Shape Style: ROUND
  • Thickness: 0.375 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 5310-01-099-0386, 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 9 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-099-0386
Primary Part Number21089
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCrane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
StatusACTIVE
Center Hole Shape StyleROUND
MaterialCOPPER ALLOY OVERALL
ColorYELLOW OVERALL
Outside Left Corner Chamfer Angle45.0 DEGREES NOMINAL
Cross-Sectional Shape StyleBLANK RECTANGULAR
Peripheral Shape StyleROUND
Thickness0.375 INCHES NOMINAL IN
Hole Diameter0.516 INCHES NOMINAL IN
Overall Diameter1.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5305-00-038-8995NAS1352-4-16P INTERCHANGEABLE
Screw,cap,socket Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5996-00-133-4292400065 INTERCHANGEABLE
Amplifier,magnetic
Dbp Microwave Inc. Dba Dbp Microwave Inc.
4720-00-184-825721089 INTERCHANGEABLE
Hose Assembly,nonmetallic
Abb Installation Products Inc
5330-00-418-4262 INTERCHANGEABLE
Seal Assembly
1650-00-486-024121089 INTERCHANGEABLE
Valve,directional F
Hydro-Aire Aerospace Corp
5998-00-563-0474 INTERCHANGEABLE
Circuit Card Assembly
5305-00-582-849115X485 INTERCHANGEABLE
Screw,machine
Napco International Llc Dba Napco International Inc
5985-01-319-8304187802 INTERCHANGEABLE
Coupler,rotary,radio Frequency
Northrop Grumman Systems Corporation
1650-01-335-457221089 INTERCHANGEABLE
Plate,fluid
Parker Hannifin Corporation Div Hydraulic Systems Division
Cross-Reference Index
Part NumberManufacturer
21089 PRIMARY Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp. (USA)
Related Parts
5305-00-038-8995INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
NAS1352-4-16P
5996-00-133-4292INTERCHANGEABLE
AMPLIFIER,MAGNETIC
400065
4720-00-184-8257INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21089
5330-00-418-4262INTERCHANGEABLE
SEAL ASSEMBLY
1650-00-486-0241INTERCHANGEABLE
VALVE,DIRECTIONAL F
21089
5998-00-563-0474INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5305-00-582-8491INTERCHANGEABLE
SCREW,MACHINE
15X485
5985-01-319-8304INTERCHANGEABLE
COUPLER,ROTARY,RADIO FREQUENCY
187802
1650-01-335-4572INTERCHANGEABLE
PLATE,FLUID
21089

Frequently Asked Questions

What is NSN 5310-01-099-0386?

NSN 5310-01-099-0386 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: active.

What are the part numbers for NSN 5310-01-099-0386?

NSN 5310-01-099-0386 has 1 cross-referenced part number: 21089 (Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.).

What NSN replaces 5310-01-099-0386?

There are 9 known substitutes for 5310-01-099-0386: 5305-00-038-8995, 5996-00-133-4292, 4720-00-184-8257 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21089?

Key specifications for 21089: Center Hole Shape Style: ROUND; Material: COPPER ALLOY OVERALL; Color: YELLOW OVERALL; Outside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL. 9 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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