PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-9009Washer,lock

Ludlum Measurements Inc · NSN 5310-01-616-2070 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-616-2070 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-616-2070. Primary manufacturer part number: 20-9009.
Features
  • Washer,lock — FSC 5310
  • Outside Diameter: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
  • Material Thickness: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
  • Hole Diameter: 0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
  • Style Designator: FLAT INTERNAL TEETH
  • Material: STEEL COMP 316 OVERALL
  • 1 verified cross-reference
  • Primary manufacturer: Ludlum Measurements Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 316 Overall construction
General Description

The Washer,lock, cataloged under National Stock Number 5310-01-616-2070, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Ludlum Measurements Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-616-2070
Primary Part Number20-9009
Item NameWasher,lock
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerLudlum Measurements Inc
StatusACTIVE
Outside Diameter0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
Material Thickness0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
Hole Diameter0.141 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
Style DesignatorFLAT INTERNAL TEETH
MaterialSTEEL COMP 316 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-100-360144150 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5360-00-606-1808209009 INTERCHANGEABLE
Spring,helical,compression
Valcor Engineering Corporation
Cross-Reference Index
Part NumberManufacturer
20-9009 PRIMARY Ludlum Measurements Inc (USA)
Related Parts
3110-00-100-3601INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
44150
5360-00-606-1808INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
209009

Frequently Asked Questions

What is NSN 5310-01-616-2070?

NSN 5310-01-616-2070 is a Washer,lock, manufactured by Ludlum Measurements Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-616-2070?

NSN 5310-01-616-2070 has 1 cross-referenced part number: 20-9009 (Ludlum Measurements Inc).

What NSN replaces 5310-01-616-2070?

There are 2 known substitutes for 5310-01-616-2070: 3110-00-100-3601, 5360-00-606-1808. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-9009?

Key specifications for 20-9009: Outside Diameter: 0.275 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN; End Item Identification: RADIACMETER,UM-231D/PD; Part Name Assigned by Controlling Agency: WASHER NO. 6 TILW; Material Thickness: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN. 7 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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