PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4700-2Washer,lock

Pdi Ground Support Systems, Inc. · NSN 5310-01-028-8878 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-028-8878 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-028-8878. Primary manufacturer part number: 4700-2.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.969 INCHES NOMINAL0.969 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Material Thickness: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
  • Hole Diameter: 0.594 INCHES NOMINAL0.594 INCHES NOMINAL IN
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • 1 verified cross-reference
  • Primary manufacturer: Pdi Ground Support Systems, Inc.
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-028-8878, 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 5 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-028-8878
Primary Part Number4700-2
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPdi Ground Support Systems, Inc.
StatusACTIVE
Outside Diameter0.969 INCHES NOMINAL0.969 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Material Thickness0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN
Hole Diameter0.594 INCHES NOMINAL0.594 INCHES NOMINAL IN
Style DesignatorSPLIT HELICAL-RIGHT HAND
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-155-6661 INTERCHANGEABLE
Bearing,ball,annular
5310-00-481-6411 INTERCHANGEABLE
Washer,lock
5975-00-983-523980111 INTERCHANGEABLE
Conduit,metal,flexible
Electri-Flex Co
6140-01-437-672847002 INTERCHANGEABLE
Battery,storage
Biotek Instruments, Inc. Dba Biotek Div Bio-Tek Instruments Llc Dba Biotek Instruments Inc.
5920-01-616-907247002 INTERCHANGEABLE
Fuse,enclosed Link
Waytek Inc
5985-01-619-82594700-2 INTERCHANGEABLE
Mast Section
Shakespeare Company, Llc Div Military Electronics
Cross-Reference Index
Part NumberManufacturer
4700-2 PRIMARY Pdi Ground Support Systems, Inc. (USA)
Related Parts
3110-00-155-6661INTERCHANGEABLE
BEARING,BALL,ANNULAR
5310-00-481-6411INTERCHANGEABLE
WASHER,LOCK
5975-00-983-5239INTERCHANGEABLE
CONDUIT,METAL,FLEXIBLE
80111
6140-01-437-6728INTERCHANGEABLE
BATTERY,STORAGE
47002
5920-01-616-9072INTERCHANGEABLE
FUSE,ENCLOSED LINK
47002
5985-01-619-8259INTERCHANGEABLE
MAST SECTION
4700-2

Frequently Asked Questions

What is NSN 5310-01-028-8878?

NSN 5310-01-028-8878 is a Washer,lock, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-028-8878?

NSN 5310-01-028-8878 has 1 cross-referenced part number: 4700-2 (Pdi Ground Support Systems, Inc.).

What NSN replaces 5310-01-028-8878?

There are 6 known substitutes for 5310-01-028-8878: 3110-00-155-6661, 5310-00-481-6411, 5975-00-983-5239 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4700-2?

Key specifications for 4700-2: Outside Diameter: 0.969 INCHES NOMINAL0.969 INCHES NOMINAL IN; Material: STEEL OVERALL; Material Thickness: 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN; Hole Diameter: 0.594 INCHES NOMINAL0.594 INCHES NOMINAL IN. 5 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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