PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7266Washer,lock

Prestolite Electric Inc · NSN 5310-01-272-4831 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-272-4831 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-272-4831. Primary manufacturer part number: 7266.
Features
  • Washer,lock — FSC 5310
  • Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
  • Outside Diameter: 0.223 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OVERALL
  • Hole Diameter: 0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
  • Material: STEEL OVERALL
  • Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-272-4831, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Prestolite Electric Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-272-4831
Primary Part Number7266
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusACTIVE
Hardness Rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Outside Diameter0.223 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Hole Diameter0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.031 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5910-00-128-3288 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
5330-00-194-412688340LRH1L5 INTERCHANGEABLE
Seal,plain
Johns Manville Intl
5136-00-197-95715136-00-197-9571 INTERCHANGEABLE
Die,rethreading
General Services Administration Federal Supply Service
3120-00-293-62527266 INTERCHANGEABLE
Bearing,sleeve
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
2815-00-540-7538S1-250952R96 INTERCHANGEABLE
Ring Set,piston
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5960-00-855-3783 INTERCHANGEABLE
Electron Tube
5940-01-061-8693ST-2 INTERCHANGEABLE
Post,binding,electrical
East Penn Manufacturing Co. Dba East Penn Manufacturing Co Inc
5970-01-333-1153726-6 INTERCHANGEABLE
Insulator,strain
Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.
4940-01-496-51467266 INTERCHANGEABLE
Shop Equipment,toolroom
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
Cross-Reference Index
Part NumberManufacturer
7266 PRIMARY Prestolite Electric Inc (USA)
7266 Prestolite Electric Inc (USA)
Related Parts
5910-00-128-3288INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
5330-00-194-4126INTERCHANGEABLE
SEAL,PLAIN
88340LRH1L5
5136-00-197-9571INTERCHANGEABLE
DIE,RETHREADING
5136-00-197-9571
3120-00-293-6252INTERCHANGEABLE
BEARING,SLEEVE
7266
2815-00-540-7538INTERCHANGEABLE
RING SET,PISTON
S1-250952R96
5960-00-855-3783INTERCHANGEABLE
ELECTRON TUBE
5940-01-061-8693INTERCHANGEABLE
POST,BINDING,ELECTRICAL
ST-2
5970-01-333-1153INTERCHANGEABLE
INSULATOR,STRAIN
726-6
4940-01-496-5146INTERCHANGEABLE
SHOP EQUIPMENT,TOOLROOM
7266

Frequently Asked Questions

What is NSN 5310-01-272-4831?

NSN 5310-01-272-4831 is a Washer,lock, manufactured by Prestolite Electric Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-272-4831?

NSN 5310-01-272-4831 has 2 cross-referenced part numbers: 7266 (Prestolite Electric Inc), 7266 (Prestolite Electric Inc).

What NSN replaces 5310-01-272-4831?

There are 9 known substitutes for 5310-01-272-4831: 5910-00-128-3288, 5330-00-194-4126, 5136-00-197-9571 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7266?

Key specifications for 7266: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Outside Diameter: 0.223 INCHES MAXIMUM IN; Surface Treatment: CADMIUM OVERALL; Hole Diameter: 0.115 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN. 8 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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