PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

112T389Washer,key

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5310-00-045-3810 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-045-3810 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-045-3810. Primary manufacturer part number: 112T389.
Features
  • Washer,key — FSC 5310
  • Hardness Rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
  • Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • External Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL
  • Style Designator: KEY
  • Material: STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
  • Surface Treatment: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 1010 or Steel Comp 1012 or Steel Comp 1015 or Steel Comp 1016 or Steel Comp 1017 or Steel Comp 1018 or Steel Comp 1019 Overall construction
General Description

The Washer,key, cataloged under National Stock Number 5310-00-045-3810, 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 14 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-045-3810
Primary Part Number112T389
Item NameWasher,key
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
Hardness Rating50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
Internal Prebent Key Width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
External Prebent Key Width0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Material Document and ClassificationSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
Style DesignatorKEY
MaterialSTEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
Surface TreatmentCADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
Outside Diameter0.812 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN
Material Thickness0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN
Overall Distance Including Keys1.156 INCHES MAXIMUM IN
Internal Prebent Key Length0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
Surface Treatment Document and ClassificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR ASTM B633,TYPE 2,CLASS 3 ASSN STD 2ND TREATMENT RESPONSE OVERALL
Hole Diameter0.601 INCHES MINIMUM AND 0.616 INCHES MAXIMUM IN
External Key Quantity11
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5310-00-186-0961 INTERCHANGEABLE
Washer,key
5310-00-190-2907PB19091 INTERCHANGEABLE
Washer,flat
Mission Systems Davenport Inc.
5961-00-536-1559 INTERCHANGEABLE
Semiconductor Device,diode
4820-00-606-93686636 INTERCHANGEABLE
Locknut
Eaton Aerospace, Llc Dba Jackson South
5961-00-909-7383W02 INTERCHANGEABLE
Rectifier,semiconductor Device,u
General Semiconductor Inc
5961-01-050-4843 INTERCHANGEABLE
Rectifier,semiconductor Device,u
5310-01-103-8840 INTERCHANGEABLE
Washer,key
5310-01-132-8554 INTERCHANGEABLE
Washer,key
4320-01-205-0807W0-2 INTERCHANGEABLE
Modification Kit,pumps and Compr
Circor Naval Solutions Llc Dba Warren Pumps
Cross-Reference Index
Part NumberManufacturer
112T389 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
236-1017P3 Raytheon Company Div Corp (USA)
112T389 Westinghouse Electric Corp (USA)
19H570-3 Westinghouse Electric Corp (USA)
7917999-001 Delco Electronics Corp Delco Systems Opns (USA)
7917999-001 General Motors Corp (USA)
19H570-3 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
19H570-3 Colt Industries Operating Corp Pratt and Whitney Machine Tool Div
236-1017P3 Raytheon Company Dba Raytheon (USA)
W-02 Zf Industrieantriebe Witten Gmbh (DEU)
12Z10002-802 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
MS19070-022 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
112T389 Colt Industries Operating Corp Pratt and Whitney Machine Tool Div
B31-10090-3 General Dynamics Mission Systems, Inc. (USA)
Related Parts
5310-00-186-0961INTERCHANGEABLE
WASHER,KEY
5310-00-190-2907INTERCHANGEABLE
WASHER,FLAT
PB19091
5961-00-536-1559INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
4820-00-606-9368INTERCHANGEABLE
LOCKNUT
6636
5961-00-909-7383INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
W02
5961-01-050-4843INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
5310-01-103-8840INTERCHANGEABLE
WASHER,KEY
5310-01-132-8554INTERCHANGEABLE
WASHER,KEY
4320-01-205-0807INTERCHANGEABLE
MODIFICATION KIT,PUMPS AND COMPR
W0-2

Frequently Asked Questions

What is NSN 5310-00-045-3810?

NSN 5310-00-045-3810 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-045-3810?

NSN 5310-00-045-3810 has 14 cross-referenced part numbers: 112T389 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 236-1017P3 (Raytheon Company Div Corp), 112T389 (Westinghouse Electric Corp), 19H570-3 (Westinghouse Electric Corp), 7917999-001 (Delco Electronics Corp Delco Systems Opns) and 9 more.

What NSN replaces 5310-00-045-3810?

There are 9 known substitutes for 5310-00-045-3810: 5310-00-186-0961, 5310-00-190-2907, 5961-00-536-1559 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 112T389?

Key specifications for 112T389: Hardness Rating: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM; Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; External Prebent Key Width: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-045-3810 still in active supply?

NSN 5310-00-045-3810 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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