PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

511018Washer,key

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-369-5702 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-369-5702 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-369-5702. Primary manufacturer part number: 511018.
Features
  • Washer,key — FSC 5310
  • External Key Quantity: 3
  • Style Designator: KEY
  • Angle Between External Keys: 118.0 DEGREES MINIMUM AND 122.0 DEGREES MAXIMUM
  • Split Key Length: 0.095 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
  • External Prebent Key Angle: 20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
  • Overall Distance Including Keys: 1.025 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
  • Hole Diameter: 0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 321 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-369-5702, 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 14 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-369-5702
Primary Part Number511018
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
External Key Quantity3
Style DesignatorKEY
Angle Between External Keys118.0 DEGREES MINIMUM AND 122.0 DEGREES MAXIMUM
Split Key Length0.095 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
External Prebent Key Angle20.0 DEGREES MINIMUM AND 40.0 DEGREES MAXIMUM
Overall Distance Including Keys1.025 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN
Hole Diameter0.515 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
External Tapered Key Width0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Material Document and ClassificationAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Material Thickness0.038 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
MaterialSTEEL COMP 321 OVERALL
Outside Diameter0.705 INCHES MINIMUM AND 0.715 INCHES MAXIMUM IN
External Prebent Key Width0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
Distance From Centerline to Inside of Prebent Key0.412 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5120-00-240-5268 INTERCHANGEABLE
Key,socket Head Screw
4730-01-103-9242511018 INTERCHANGEABLE
Fitting
B/e Aerospace, Inc. Dba Interturbine Div Oxygen & PSU Systems
4730-01-331-7352 INTERCHANGEABLE
Elbow,pipe
5340-01-517-2472 INTERCHANGEABLE
Lever,toggle
Cross-Reference Index
Part NumberManufacturer
511018 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
511018 Rtx Corporation Div Pratt & Whitney (USA)
511018 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
Related Parts
5120-00-240-5268INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
4730-01-103-9242INTERCHANGEABLE
FITTING
511018
4730-01-331-7352INTERCHANGEABLE
ELBOW,PIPE
5340-01-517-2472INTERCHANGEABLE
LEVER,TOGGLE

Frequently Asked Questions

What is NSN 5310-00-369-5702?

NSN 5310-00-369-5702 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 5310-00-369-5702?

NSN 5310-00-369-5702 has 3 cross-referenced part numbers: 511018 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 511018 (Rtx Corporation Div Pratt & Whitney), 511018 (Turbo Power & Marine System Inc Sub of United Technologies Corp).

What NSN replaces 5310-00-369-5702?

There are 4 known substitutes for 5310-00-369-5702: 5120-00-240-5268, 4730-01-103-9242, 4730-01-331-7352 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 511018?

Key specifications for 511018: External Key Quantity: 3; Style Designator: KEY; Angle Between External Keys: 118.0 DEGREES MINIMUM AND 122.0 DEGREES MAXIMUM; Split Key Length: 0.095 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN. 14 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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