PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R-21Adapter,electrical Conduit

Killark Electric Mfg Co · NSN 5975-01-460-6572 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-01-460-6572 — this item is cataloged by the U.S. Government under National Stock Number 5975-01-460-6572. Primary manufacturer part number: R-21.
Features
  • Adapter,electrical Conduit — FSC 5975
  • Conduit Type Accommodated: ANY ACCEPTABLE SINGLE END
  • Item Accommodated Trade Size: 0.500 INCHES SECOND END IN
  • Material: ALUMINUM ALLOY 6061
  • Outside Diameter: 0.605 INCHES NOMINAL SECOND END IN
  • End Type: EXTERNAL THREAD SINGLE END
  • Outside Diameter: 0.942 INCHES NOMINAL FIRST END IN
  • Style Designator: THREAD TO THREAD REDUCER
Applications
  • Applications requiring Aluminum Alloy 6061 construction
General Description

The Adapter,electrical Conduit, cataloged under National Stock Number 5975-01-460-6572, 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 Killark Electric Mfg Co. Government technical data includes 9 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5975-01-460-6572
Primary Part NumberR-21
Item NameAdapter,electrical Conduit
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerKillark Electric Mfg Co
StatusACTIVE
Conduit Type AccommodatedANY ACCEPTABLE SINGLE END
Item Accommodated Trade Size0.500 INCHES SECOND END IN
MaterialALUMINUM ALLOY 6061
Outside Diameter0.605 INCHES NOMINAL SECOND END IN
End TypeEXTERNAL THREAD SINGLE END
Outside Diameter0.942 INCHES NOMINAL FIRST END IN
Style DesignatorTHREAD TO THREAD REDUCER
Deflection Angle45.00 DEGREES
Item Accommodated Trade Size0.750 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
9905-00-057-3262R211518X24HA INTERCHANGEABLE
Sign,traffic
Federal Prison Industries, Inc
2590-00-102-3053658555 INTERCHANGEABLE
Control Assembly,push-Pull
Caterpillar Inc Div Caterpillar Defense
9905-00-336-9025R211018X24HA INTERCHANGEABLE
Sign,traffic
Federal Prison Industries, Inc
2910-00-390-8779 INTERCHANGEABLE
Parts Kit,engine Fuel Pump
4240-01-048-3096423785-2 INTERCHANGEABLE
Cartridge,respirator,air Filteri
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
9905-01-074-94129905010749412 INTERCHANGEABLE
Sign,traffic
Federal Prison Industries, Inc
6810-01-190-2730 INTERCHANGEABLE
Rhodamine B
4240-01-249-5540 INTERCHANGEABLE
Cartridge,respirator,air Filteri
2520-01-267-6052J3192340 INTERCHANGEABLE
Torque Converter,vehicular
Chrysler Corp Engine and Components Sales Diversified Products Div
5945-01-294-9692R21 INTERCHANGEABLE
Relay,hybrid
Versitron Inc
Cross-Reference Index
Part NumberManufacturer
0650150B Killark Electric Mfg Co (USA)
R-21 PRIMARY Killark Electric Mfg Co (USA)
Related Parts
9905-00-057-3262INTERCHANGEABLE
SIGN,TRAFFIC
R211518X24HA
2590-00-102-3053INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
658555
9905-00-336-9025INTERCHANGEABLE
SIGN,TRAFFIC
R211018X24HA
2910-00-390-8779INTERCHANGEABLE
PARTS KIT,ENGINE FUEL PUMP
4240-01-048-3096INTERCHANGEABLE
CARTRIDGE,RESPIRATOR,AIR FILTERI
423785-2
9905-01-074-9412INTERCHANGEABLE
SIGN,TRAFFIC
9905010749412
6810-01-190-2730INTERCHANGEABLE
RHODAMINE B
4240-01-249-5540INTERCHANGEABLE
CARTRIDGE,RESPIRATOR,AIR FILTERI
2520-01-267-6052INTERCHANGEABLE
TORQUE CONVERTER,VEHICULAR
J3192340
5945-01-294-9692INTERCHANGEABLE
RELAY,HYBRID
R21
5331-01-304-3465INTERCHANGEABLE
O-RING
R21

Frequently Asked Questions

What is NSN 5975-01-460-6572?

NSN 5975-01-460-6572 is a Adapter,electrical Conduit, manufactured by Killark Electric Mfg Co, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-01-460-6572?

NSN 5975-01-460-6572 has 2 cross-referenced part numbers: 0650150B (Killark Electric Mfg Co), R-21 (Killark Electric Mfg Co).

What NSN replaces 5975-01-460-6572?

There are 11 known substitutes for 5975-01-460-6572: 9905-00-057-3262, 2590-00-102-3053, 9905-00-336-9025 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R-21?

Key specifications for R-21: Conduit Type Accommodated: ANY ACCEPTABLE SINGLE END; Item Accommodated Trade Size: 0.500 INCHES SECOND END IN; Material: ALUMINUM ALLOY 6061; Outside Diameter: 0.605 INCHES NOMINAL SECOND END IN. 10 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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