PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8168659Reducing Washer,knockout

Us Army Aviation and Missile Command · NSN 5975-00-280-9182 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-280-9182 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-280-9182. Primary manufacturer part number: 8168659.
Features
  • Reducing Washer,knockout — FSC 5975
  • Outside Diameter: 2.250 INCHES NOMINAL IN
  • Material: STEEL
  • Knockout Size for Which Designed: 1.500 INCHES NOMINAL IN
  • Design Type: FLAT
  • Conduit Size Accommodated: 1.250 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Us Army Aviation and Missile Command
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel construction
General Description

The Reducing Washer,knockout, cataloged under National Stock Number 5975-00-280-9182, is classified within Federal Supply Class 5975 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5975-00-280-9182
Primary Part Number8168659
Item NameReducing Washer,knockout
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerUs Army Aviation and Missile Command
StatusCANCELLED
Outside Diameter2.250 INCHES NOMINAL IN
MaterialSTEEL
Knockout Size for Which Designed1.500 INCHES NOMINAL IN
Design TypeFLAT
Conduit Size Accommodated1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-100-358034301 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
5930-00-122-34723713 INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Electro Switch Corp
1005-00-344-62653713 INTERCHANGEABLE
Stud
Smith & Wesson Sales Company
5962-01-045-54363713 INTERCHANGEABLE
Microcircuit,digital
Data Device Corp Dba Beta Transformer Technology
5330-01-061-64773713 INTERCHANGEABLE
Gasket Set
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5120-01-079-80445120-01-079-8044 INTERCHANGEABLE
Bit,screwdriver
General Services Administration Federal Supply Service
2540-01-100-3894334-SW14339P INTERCHANGEABLE
Box,accessories Stowage
Wheeler Fleet Solutions, Co.
6610-01-108-77793713 INTERCHANGEABLE
Motion Transfer Assembly
Kearflex Engineering Company
5995-01-139-2428260318 3 INTERCHANGEABLE
Cable Assembly,printed,flexible
Dynaco Acquisition Corp. Dba Dynaco West
3120-01-228-758213409 INTERCHANGEABLE
Bushing,sleeve
Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
Part NumberManufacturer
13409 Atlas Technologies Inc (USA)
3713 Abb Installation Products Inc (USA)
1454-D Atlas Technologies Inc (USA)
8168659 PRIMARY Us Army Aviation and Missile Command (USA)
Related Parts
3110-00-100-3580INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
34301
5930-00-122-3472INTERCHANGEABLE
SWITCH,ROTARY
3713
1005-00-344-6265INTERCHANGEABLE
STUD
3713
5962-01-045-5436INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
3713
5330-01-061-6477INTERCHANGEABLE
GASKET SET
3713
5120-01-079-8044INTERCHANGEABLE
BIT,SCREWDRIVER
5120-01-079-8044
2540-01-100-3894INTERCHANGEABLE
BOX,ACCESSORIES STOWAGE
334-SW14339P
6610-01-108-7779INTERCHANGEABLE
MOTION TRANSFER ASSEMBLY
3713
5995-01-139-2428INTERCHANGEABLE
CABLE ASSEMBLY,PRINTED,FLEXIBLE
260318 3
3120-01-228-7582INTERCHANGEABLE
BUSHING,SLEEVE
13409
2950-01-288-2014INTERCHANGEABLE
NOZZEL,SPECIAL
VTR251-2-3713
5950-01-330-0573INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
4950449

Frequently Asked Questions

What is NSN 5975-00-280-9182?

NSN 5975-00-280-9182 is a Reducing Washer,knockout, manufactured by Us Army Aviation and Missile Command, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-280-9182?

NSN 5975-00-280-9182 has 4 cross-referenced part numbers: 13409 (Atlas Technologies Inc), 3713 (Abb Installation Products Inc), 1454-D (Atlas Technologies Inc), 8168659 (Us Army Aviation and Missile Command).

What NSN replaces 5975-00-280-9182?

There are 12 known substitutes for 5975-00-280-9182: 3110-00-100-3580, 5930-00-122-3472, 1005-00-344-6265 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8168659?

Key specifications for 8168659: Outside Diameter: 2.250 INCHES NOMINAL IN; Material: STEEL; Knockout Size for Which Designed: 1.500 INCHES NOMINAL IN; Design Type: FLAT. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-280-9182 still in active supply?

NSN 5975-00-280-9182 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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