PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

850-0055Washer,lock

Cummins Power Generation Inc. · NSN 5310-01-051-6861 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-051-6861 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-051-6861. Primary manufacturer part number: 850-0055.
Features
  • Washer,lock — FSC 5310
  • Hole Diameter: 0.450 INCHES NOMINAL0.450 INCHES NOMINAL IN
  • Outside Diameter: 0.770 INCHES NOMINAL0.770 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Style Designator: SPLIT HELICAL-RIGHT HAND
  • Material Thickness: 0.115 INCHES NOMINAL0.115 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Cummins Power Generation Inc.
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 5310-01-051-6861, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Cummins Power Generation Inc.. Government technical data includes 5 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-051-6861
Primary Part Number850-0055
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerCummins Power Generation Inc.
StatusACTIVE
Hole Diameter0.450 INCHES NOMINAL0.450 INCHES NOMINAL IN
Outside Diameter0.770 INCHES NOMINAL0.770 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Style DesignatorSPLIT HELICAL-RIGHT HAND
Material Thickness0.115 INCHES NOMINAL0.115 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
7920-01-188-541985055 INTERCHANGEABLE
Brush,wire,scratch
Pferd Milwaukee Brush Co Inc
2040-01-284-2472 INTERCHANGEABLE
Window,marine
3010-01-365-38166238502 INTERCHANGEABLE
Actuator,electro-Mechanical,line
Raytheon Company Dba Raytheon
5120-01-430-8540 INTERCHANGEABLE
Wrench,torque
5940-01-475-954910081851-102 INTERCHANGEABLE
Terminal,stud
Elbitamerica, Inc.
Cross-Reference Index
Part NumberManufacturer
850-0055 PRIMARY Cummins Power Generation Inc. (USA)
850-55 Cummins Power Generation Inc. (USA)
Related Parts
7920-01-188-5419INTERCHANGEABLE
BRUSH,WIRE,SCRATCH
85055
2040-01-284-2472INTERCHANGEABLE
WINDOW,MARINE
3010-01-365-3816INTERCHANGEABLE
ACTUATOR,ELECTRO-MECHANICAL,LINE
6238502
5120-01-430-8540INTERCHANGEABLE
WRENCH,TORQUE
5940-01-475-9549INTERCHANGEABLE
TERMINAL,STUD
10081851-102

Frequently Asked Questions

What is NSN 5310-01-051-6861?

NSN 5310-01-051-6861 is a Washer,lock, manufactured by Cummins Power Generation Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-051-6861?

NSN 5310-01-051-6861 has 2 cross-referenced part numbers: 850-0055 (Cummins Power Generation Inc.), 850-55 (Cummins Power Generation Inc.).

What NSN replaces 5310-01-051-6861?

There are 5 known substitutes for 5310-01-051-6861: 7920-01-188-5419, 2040-01-284-2472, 3010-01-365-3816 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 850-0055?

Key specifications for 850-0055: Hole Diameter: 0.450 INCHES NOMINAL0.450 INCHES NOMINAL IN; Outside Diameter: 0.770 INCHES NOMINAL0.770 INCHES NOMINAL IN; Material: STEEL OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND. 5 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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