PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-0251Nut,coupling,electrical Conduit

Breeze-Eastern Llc · NSN 5975-00-280-9521 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-280-9521 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-280-9521. Primary manufacturer part number: 4-0251.
Features
  • Nut,coupling,electrical Conduit — FSC 5975
  • Style Designator: KNURLED/RIBBED
  • Item Accommodated Trade Size: 0.250 INCHES SINGLE END IN
  • Seat End Inside Diameter: 0.458 INCHES NOMINAL IN
  • Surface Treatment: ANODIZE
  • Material: ALUMINUM ALLOY
  • Conduit Type Accommodated: RIGID METALLIC THINWALL SINGLE END
  • 1 verified cross-reference
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy construction
General Description

The Nut,coupling,electrical Conduit, cataloged under National Stock Number 5975-00-280-9521, 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 Breeze-Eastern Llc. Government technical data includes 6 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5975-00-280-9521
Primary Part Number4-0251
Item NameNut,coupling,electrical Conduit
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerBreeze-Eastern Llc
StatusCANCELLED
Style DesignatorKNURLED/RIBBED
Item Accommodated Trade Size0.250 INCHES SINGLE END IN
Seat End Inside Diameter0.458 INCHES NOMINAL IN
Surface TreatmentANODIZE
MaterialALUMINUM ALLOY
Conduit Type AccommodatedRIGID METALLIC THINWALL SINGLE END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5940-00-211-5579 INTERCHANGEABLE
Terminal,stud
5995-00-212-194140251 INTERCHANGEABLE
Cable Assembly,radio Frequency
Alliant Techsystems Operations Llc Div Defense Electronic Systems
6105-00-229-0504 INTERCHANGEABLE
Motor,direct Current
4920-00-626-591640-251 INTERCHANGEABLE
Hytrol Test Unit
Hydro-Aire Aerospace Corp
5961-00-758-5816 INTERCHANGEABLE
Transistor
5342-00-838-8820 INTERCHANGEABLE
Shield
5330-00-862-9288SRCCA1445 INTERCHANGEABLE
Gasket
Stillman Seal Corporation Div Stillman Seal Corperation
5961-00-917-34784811-183012 INTERCHANGEABLE
Transistor
Fluke Corp
5961-00-931-823740251 INTERCHANGEABLE
Transistor
Emcore Corporation Div Concord Division
6350-00-932-7962613905-1 INTERCHANGEABLE
Datum Box Assy
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
Cross-Reference Index
Part NumberManufacturer
4-0251 PRIMARY Breeze-Eastern Llc (USA)
Related Parts
5940-00-211-5579INTERCHANGEABLE
TERMINAL,STUD
5995-00-212-1941INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
40251
6105-00-229-0504INTERCHANGEABLE
MOTOR,DIRECT CURRENT
4920-00-626-5916INTERCHANGEABLE
HYTROL TEST UNIT
40-251
5961-00-758-5816INTERCHANGEABLE
TRANSISTOR
5342-00-838-8820INTERCHANGEABLE
SHIELD
5330-00-862-9288INTERCHANGEABLE
GASKET
SRCCA1445
5961-00-917-3478INTERCHANGEABLE
TRANSISTOR
4811-183012
5961-00-931-8237INTERCHANGEABLE
TRANSISTOR
40251
6350-00-932-7962INTERCHANGEABLE
DATUM BOX ASSY
613905-1
5961-01-181-3052INTERCHANGEABLE
TRANSISTOR
209285-008
3010-01-313-2912INTERCHANGEABLE
COUPLING,SHAFT,RIGID

Frequently Asked Questions

What is NSN 5975-00-280-9521?

NSN 5975-00-280-9521 is a Nut,coupling,electrical Conduit, manufactured by Breeze-Eastern Llc, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-280-9521?

NSN 5975-00-280-9521 has 1 cross-referenced part number: 4-0251 (Breeze-Eastern Llc).

What NSN replaces 5975-00-280-9521?

There are 12 known substitutes for 5975-00-280-9521: 5940-00-211-5579, 5995-00-212-1941, 6105-00-229-0504 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-0251?

Key specifications for 4-0251: Style Designator: KNURLED/RIBBED; Item Accommodated Trade Size: 0.250 INCHES SINGLE END IN; Seat End Inside Diameter: 0.458 INCHES NOMINAL IN; Surface Treatment: ANODIZE. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-280-9521 still in active supply?

NSN 5975-00-280-9521 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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