PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4701-20Washer,flat

Pdi Ground Support Systems, Inc. · NSN 5310-01-494-8400 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-494-8400 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-494-8400. Primary manufacturer part number: 4701-20.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Cross-Sectional Shape Style: RECTANGULAR
  • Thickness: 0.094 INCHES NOMINAL IN
  • Center Hole Shape Style: ROUND
  • Hole Diameter: 0.594 INCHES NOMINAL IN
  • Peripheral 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 5310-01-494-8400, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Pdi Ground Support Systems, Inc.. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-494-8400
Primary Part Number4701-20
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPdi Ground Support Systems, Inc.
StatusACTIVE
MaterialSTEEL OVERALL
Material Document and ClassificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Cross-Sectional Shape StyleRECTANGULAR
Thickness0.094 INCHES NOMINAL IN
Center Hole Shape StyleROUND
Hole Diameter0.594 INCHES NOMINAL IN
Peripheral Shape StyleROUND
Overall Diameter1.188 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-599-62001464 INTERCHANGEABLE
Seal,plain Encased
Parker Hannifin Corporation Div Chelsea Products Division
5330-01-046-7449470120 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5935-01-079-8926 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Cross-Reference Index
Part NumberManufacturer
4701-20 PRIMARY Pdi Ground Support Systems, Inc. (USA)
Related Parts
5330-00-599-6200INTERCHANGEABLE
SEAL,PLAIN ENCASED
1464
5330-01-046-7449INTERCHANGEABLE
SEAL,PLAIN ENCASED
470120
5935-01-079-8926INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON

Frequently Asked Questions

What is NSN 5310-01-494-8400?

NSN 5310-01-494-8400 is a Washer,flat, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-494-8400?

NSN 5310-01-494-8400 has 1 cross-referenced part number: 4701-20 (Pdi Ground Support Systems, Inc.).

What NSN replaces 5310-01-494-8400?

There are 3 known substitutes for 5310-01-494-8400: 5330-00-599-6200, 5330-01-046-7449, 5935-01-079-8926. Verify interchangeability with system specifications before substitution.

What are the specifications of 4701-20?

Key specifications for 4701-20: Material: STEEL OVERALL; Material Document and Classification: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 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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