PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

566087Washer,key

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-01-161-5512 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-161-5512 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-161-5512. Primary manufacturer part number: 566087.
Features
  • Washer,key — FSC 5310
  • Outside Diameter: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
  • External Prebent Key Width: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Material Thickness: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
  • Distance From Centerline to Inside of Prebent Key: 0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
  • External Prebent Key Angle: 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
  • Split Key Length: 0.185 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
  • External Tapered Key Width: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-01-161-5512, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 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
NSN5310-01-161-5512
Primary Part Number566087
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Outside Diameter0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
External Prebent Key Width0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Material Thickness0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
Distance From Centerline to Inside of Prebent Key0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN
External Prebent Key Angle20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
Split Key Length0.185 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
External Tapered Key Width0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Hole Diameter0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
Style DesignatorKEY
Angle Between External Keys58.0 DEGREES MINIMUM AND 62.0 DEGREES MAXIMUM
External Prebent Key Length0.140 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
Material Document and ClassificationAMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
External Key Quantity1
MaterialSTEEL CORROSION RESISTING OVERALL
Overall Distance Including Keys1.017 INCHES MINIMUM AND 1.075 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2920-00-237-0126YJ64 INTERCHANGEABLE
Rectifier,module
Wisconsin Motors, Llc
5945-00-318-59348409806 INTERCHANGEABLE
Relay,electromagnetic
Army, United States Department of the Dba Rock Island Arsenal Jmtc
5310-00-548-6255 INTERCHANGEABLE
Nut,plain,hexagon
5330-00-604-9013566087 INTERCHANGEABLE
Seal,nonmetallic Round Section
Teledyne Brown Engineering, Inc. Dba Teledyne Turbine Engines Div Teledyne Turbine Engines
5940-01-171-460056087 INTERCHANGEABLE
Cover,terminal Board
Alliance Laundry Systems Llc
Cross-Reference Index
Part NumberManufacturer
566087 Atomic Energy Commission Oak Ridge Opns Office (USA)
566087 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
566087 Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA)
56087 Paradigm Manchester Inc. Dba Pursuit Aerospace (USA)
56087 Dynamic Gunver Technologies Llc (USA)
56087 Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA)
566087 Gould E a and Co (USA)
Related Parts
2920-00-237-0126INTERCHANGEABLE
RECTIFIER,MODULE
YJ64
5945-00-318-5934INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
8409806
5310-00-548-6255INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5330-00-604-9013INTERCHANGEABLE
SEAL,NONMETALLIC ROUND SECTION
566087
5940-01-171-4600INTERCHANGEABLE
COVER,TERMINAL BOARD
56087

Frequently Asked Questions

What is NSN 5310-01-161-5512?

NSN 5310-01-161-5512 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-161-5512?

NSN 5310-01-161-5512 has 7 cross-referenced part numbers: 566087 (Atomic Energy Commission Oak Ridge Opns Office), 566087 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 566087 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 56087 (Paradigm Manchester Inc. Dba Pursuit Aerospace), 56087 (Dynamic Gunver Technologies Llc) and 2 more.

What NSN replaces 5310-01-161-5512?

There are 5 known substitutes for 5310-01-161-5512: 2920-00-237-0126, 5945-00-318-5934, 5310-00-548-6255 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 566087?

Key specifications for 566087: Outside Diameter: 0.800 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN; External Prebent Key Width: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Material Thickness: 0.027 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN; Distance From Centerline to Inside of Prebent Key: 0.410 INCHES MINIMUM AND 0.420 INCHES MAXIMUM IN. 15 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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