PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C91080A1PC299Washer,key

New York Naval Shipyard Naval Base · NSN 5310-00-186-0984 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-186-0984 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-186-0984. Primary manufacturer part number: C91080A1PC299.
Features
  • Washer,key — FSC 5310
  • External Key Quantity: 19
  • Outside Diameter: 6.531 INCHES MINIMUM AND 6.576 INCHES MAXIMUM IN
  • Style Designator: KEY
  • Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL
  • Material: STEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
  • External Prebent Key Width: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
  • Overall Distance Including Keys: 7.438 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1005 or Steel Comp 1006 or Steel Comp 1008 or Steel Comp 1010 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1018 or Steel Comp 1025 or Steel Comp 1030 or Steel Comp 1035 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-186-0984, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is New York Naval Shipyard Naval Base. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 37 commercial cross-references from 19 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-186-0984
Primary Part NumberC91080A1PC299
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNew York Naval Shipyard Naval Base
StatusCANCELLED
External Key Quantity19
Outside Diameter6.531 INCHES MINIMUM AND 6.576 INCHES MAXIMUM IN
Style DesignatorKEY
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES OVERALL
MaterialSTEEL COMP 1005 OR STEEL COMP 1006 OR STEEL COMP 1008 OR STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OVERALL
External Prebent Key Width0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
Overall Distance Including Keys7.438 INCHES MAXIMUM IN
Hardness Rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
Material Thickness0.118 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
Hole Diameter5.582 INCHES MINIMUM AND 5.617 INCHES MAXIMUM IN
Internal Prebent Key Length0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Internal Prebent Key Width0.500 INCHES MINIMUM AND 0.590 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
3110-00-144-8519305S INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
2540-00-191-0438W28 INTERCHANGEABLE
Rod Assembly,contro
Cvg Sprague Devices, Llc Dba Cvg Sprague Devices, Llc
5315-00-199-0545BS5-1449PC30 INTERCHANGEABLE
Key,machine
Circor Naval Solutions Llc Dba Warren Pumps
5365-00-274-4544231344 INTERCHANGEABLE
Spacer,ring
General Motors Corp
5999-00-383-2227N28 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
5955-01-321-9360187879 INTERCHANGEABLE
Oscillator,crystal Controlled
Northrop Grumman Systems Corporation
5999-01-326-6097W28 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
Cross-Reference Index
Part NumberManufacturer
C91080A1PC299 New York Naval Shipyard Naval Base (USA)
MB1283PC4 Mkt Geotechnical Systems (USA)
419166 Reliance Electric Company Dba Reliance & Dodge Brands (USA)
187879 General Motors Corp (USA)
W28 Westinghouse Electric Corp (USA)
201-42PC28 Patterson Pump Co Div Patterson Pump Company (USA)
60748ALT1PC106 Patterson Pump Co Div Patterson Pump Company (USA)
W28 Federal-Mogul Corp Government Sales Dept (USA)
93829PC37 Rexnord Industries Llc (USA)
W28 Rexnord Industries, Llc Div Link-Belt Bearing Operation (USA)
60104FPC178 Patterson Pump Co Div Patterson Pump Company (USA)
60221G28 Patterson Pump Co Div Patterson Pump Company (USA)
60413D106 Patterson Pump Co Div Patterson Pump Company (USA)
N28 Rexnord Industries, Llc Div Link-Belt Bearing Operation (USA)
93829PC37 Boston Naval Shipyard (USA)
60231CPC106 Patterson Pump Co Div Patterson Pump Company (USA)
W28 Universal Engineering Corp. (USA)
61947-61 Patterson Pump Co Div Patterson Pump Company (USA)
187879 Terex Corp (USA)
C91080A1PC299 Patterson Pump Co Div Patterson Pump Company (USA)
Related Parts
3110-00-144-8519INTERCHANGEABLE
BEARING,BALL,ANNULAR
305S
2540-00-191-0438INTERCHANGEABLE
ROD ASSEMBLY,CONTRO
W28
5315-00-199-0545INTERCHANGEABLE
KEY,MACHINE
BS5-1449PC30
5365-00-274-4544INTERCHANGEABLE
SPACER,RING
231344
5999-00-383-2227INTERCHANGEABLE
HEATER,THERMAL RELEASE
N28
5955-01-321-9360INTERCHANGEABLE
OSCILLATOR,CRYSTAL CONTROLLED
187879
5999-01-326-6097INTERCHANGEABLE
HEATER,THERMAL RELEASE
W28

Frequently Asked Questions

What is NSN 5310-00-186-0984?

NSN 5310-00-186-0984 is a Washer,key, manufactured by New York Naval Shipyard Naval Base, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-186-0984?

NSN 5310-00-186-0984 has 37 cross-referenced part numbers: C91080A1PC299 (New York Naval Shipyard Naval Base), MB1283PC4 (Mkt Geotechnical Systems), 419166 (Reliance Electric Company Dba Reliance & Dodge Brands), 187879 (General Motors Corp), W28 (Westinghouse Electric Corp) and 32 more.

What NSN replaces 5310-00-186-0984?

There are 7 known substitutes for 5310-00-186-0984: 3110-00-144-8519, 2540-00-191-0438, 5315-00-199-0545 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of C91080A1PC299?

Key specifications for C91080A1PC299: External Key Quantity: 19; Outside Diameter: 6.531 INCHES MINIMUM AND 6.576 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-186-0984 still in active supply?

NSN 5310-00-186-0984 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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