PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

111555Washer,key

Pdi Ground Support Systems, Inc. · NSN 5310-01-187-0684 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-187-0684 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-187-0684. Primary manufacturer part number: 111555.
Features
  • Washer,key — FSC 5310
  • Material: STEEL OVERALL
  • Style Designator: KEY
  • Surface Treatment: CADMIUM AND ZINC OVERALL
  • Internal Key Quantity: 1
  • Internal Straight Key Width: 0.156 INCHES MAXIMUM IN
  • Outside Diameter: 1.688 INCHES NOMINAL IN
  • Material Thickness: 0.125 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-01-187-0684, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-187-0684
Primary Part Number111555
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPdi Ground Support Systems, Inc.
StatusACTIVE
MaterialSTEEL OVERALL
Style DesignatorKEY
Surface TreatmentCADMIUM AND ZINC OVERALL
Internal Key Quantity1
Internal Straight Key Width0.156 INCHES MAXIMUM IN
Outside Diameter1.688 INCHES NOMINAL IN
Material Thickness0.125 INCHES NOMINAL IN
Hole Diameter1.005 INCHES NOMINAL IN
Distance From Centerline to Top of Internal Key0.342 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6620-00-064-695054135 INTERCHANGEABLE
Gage,pressure,dial Indicating
Teleflex Inc Electrical Systems Div
5310-00-680-7854 INTERCHANGEABLE
Washer,key
1670-00-872-610911-1-555 INTERCHANGEABLE
Parachute,cargo
W1d1 Natick Soldier Center Dba Us Army Ccdc Soldier Center Div Combat Capabilities Development Command - Soldier Center
2910-01-198-44762BV893 INTERCHANGEABLE
Bowl,sediment
Oshkosh Defense Llc
6515-01-227-7004111-555 INTERCHANGEABLE
Stockings,anti-Embolism
Beiersdorf-Jobst Inc
Cross-Reference Index
Part NumberManufacturer
111555 PRIMARY Pdi Ground Support Systems, Inc. (USA)
111555 PRIMARY The Timken Corporation (USA)
111555 Savoy Mfg Inc (USA)
Related Parts
6620-00-064-6950INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
54135
5310-00-680-7854INTERCHANGEABLE
WASHER,KEY
1670-00-872-6109INTERCHANGEABLE
PARACHUTE,CARGO
11-1-555
2910-01-198-4476INTERCHANGEABLE
BOWL,SEDIMENT
2BV893
6515-01-227-7004INTERCHANGEABLE
STOCKINGS,ANTI-EMBOLISM
111-555

Frequently Asked Questions

What is NSN 5310-01-187-0684?

NSN 5310-01-187-0684 is a Washer,key, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-187-0684?

NSN 5310-01-187-0684 has 3 cross-referenced part numbers: 111555 (Pdi Ground Support Systems, Inc.), 111555 (The Timken Corporation), 111555 (Savoy Mfg Inc).

What NSN replaces 5310-01-187-0684?

There are 5 known substitutes for 5310-01-187-0684: 6620-00-064-6950, 5310-00-680-7854, 1670-00-872-6109 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 111555?

Key specifications for 111555: Material: STEEL OVERALL; Style Designator: KEY; Surface Treatment: CADMIUM AND ZINC OVERALL; Internal Key Quantity: 1. 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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