PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19021Washer,flat

Franklin Engine Co Inc · NSN 5310-00-537-2652 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-537-2652 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-537-2652. Primary manufacturer part number: 19021.
Features
  • Washer,flat — FSC 5310
  • Outside Right Corner Chamfer Angle: 45.0 DEGREES NOMINAL
  • Peripheral Shape Style: ROUND
  • Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL COMP 1010 OVERALL
  • Hole Diameter: 0.391 INCHES NOMINAL IN
  • Thickness: 0.094 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1010 Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-537-2652, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Franklin Engine Co Inc. Government technical data includes 12 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-537-2652
Primary Part Number19021
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFranklin Engine Co Inc
StatusACTIVE
Outside Right Corner Chamfer Angle45.0 DEGREES NOMINAL
Peripheral Shape StyleROUND
Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL COMP 1010 OVERALL
Hole Diameter0.391 INCHES NOMINAL IN
Thickness0.094 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Outside Left Corner Chamfer Angle45.0 DEGREES NOMINAL
Hardness Rating85.0 ROCKWELL B MINIMUM AND 100.0 ROCKWELL B MAXIMUM
Overall Diameter0.750 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1560-00-083-134519021 INTERCHANGEABLE
Cover,access,aircraft
Hydro-Aire Aerospace Corp
5330-00-367-2314019-15 INTERCHANGEABLE
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5935-00-557-21621902-1 INTERCHANGEABLE
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Microwave Devices Inc
5355-00-826-87241902-1 INTERCHANGEABLE
Knob
Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc
5305-00-993-0191MS35206-212 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5950-01-040-27595904324 INTERCHANGEABLE
Coil,radio Frequency
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5935-01-073-36751902-1 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Ieh Corporation
7025-01-348-50321902-1 INTERCHANGEABLE
Interface Unit,automatic Data Pr
Inmac Usa Microwarehouse Inc of Connecticut
5330-01-499-379619021 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Carlton Co
5305-01-706-045334-21607 INTERCHANGEABLE
Setscrew
Rix Industries
Cross-Reference Index
Part NumberManufacturer
19021 Franklin Engine Co Inc (USA)
Related Parts
1560-00-083-1345INTERCHANGEABLE
COVER,ACCESS,AIRCRAFT
19021
5330-00-367-2314INTERCHANGEABLE
GASKET
019-15
5935-00-557-2162INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1902-1
5355-00-826-8724INTERCHANGEABLE
KNOB
1902-1
5305-00-993-0191INTERCHANGEABLE
SCREW,MACHINE
MS35206-212
5950-01-040-2759INTERCHANGEABLE
COIL,RADIO FREQUENCY
5904324
5935-01-073-3675INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
1902-1
7025-01-348-5032INTERCHANGEABLE
INTERFACE UNIT,AUTOMATIC DATA PR
1902-1
5330-01-499-3796INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
19021
5305-01-706-0453INTERCHANGEABLE
SETSCREW
34-21607
4730-01-706-2640INTERCHANGEABLE
MANIFOLD,AIR LINE
10-C2934
4330-01-706-2656INTERCHANGEABLE
ADAPTER
54-18871

Frequently Asked Questions

What is NSN 5310-00-537-2652?

NSN 5310-00-537-2652 is a Washer,flat, manufactured by Franklin Engine Co Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-537-2652?

NSN 5310-00-537-2652 has 1 cross-referenced part number: 19021 (Franklin Engine Co Inc).

What NSN replaces 5310-00-537-2652?

There are 12 known substitutes for 5310-00-537-2652: 1560-00-083-1345, 5330-00-367-2314, 5935-00-557-2162 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19021?

Key specifications for 19021: Outside Right Corner Chamfer Angle: 45.0 DEGREES NOMINAL; Peripheral Shape Style: ROUND; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 1010 OVERALL. 12 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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