PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2251Locknut,electrical Conduit

Heyco Inc Dba Heyco Products · NSN 5975-01-400-0600 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-01-400-0600 — this item is cataloged by the U.S. Government under National Stock Number 5975-01-400-0600. Primary manufacturer part number: 2251.
Features
  • Locknut,electrical Conduit — FSC 5975
  • Width Across Flats: 0.750 INCHES NOMINAL IN
  • Conduit Size Accommodated: 0.750 INCHES NOMINAL IN
  • Material: STEEL
  • 1 verified cross-reference
  • Primary manufacturer: Heyco Inc Dba Heyco Products
Applications
  • Applications requiring Steel construction
General Description

The Locknut,electrical Conduit, cataloged under National Stock Number 5975-01-400-0600, 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 Heyco Inc Dba Heyco Products. Government technical data includes 3 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: Active.

Technical Specifications
ParameterValue
NSN5975-01-400-0600
Primary Part Number2251
Item NameLocknut,electrical Conduit
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerHeyco Inc Dba Heyco Products
StatusACTIVE
Width Across Flats0.750 INCHES NOMINAL IN
Conduit Size Accommodated0.750 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-106-55532-251 INTERCHANGEABLE
Gasket
Gross Mechanical Laboratories Inc
6230-00-164-660517-4385-100-510 INTERCHANGEABLE
Flashlight
Chief of Engineers Dept of Army
5331-00-165-1966M83248/1-251 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4820-00-203-25892251 INTERCHANGEABLE
Valve,safety Relief
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4730-00-479-0098 INTERCHANGEABLE
Elbow,pipe
5331-01-039-3076MS28775-251 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
6625-01-052-22772251 INTERCHANGEABLE
Voltmeter
North Atlantic Industries, Inc. Dba North Atlantic Industries
4240-01-263-9349 INTERCHANGEABLE
Strap,mask
6230-01-270-59816619T6 INTERCHANGEABLE
Flashlight
Mcmaster-Carr Supply Co
6625-01-371-82692251 INTERCHANGEABLE
Counter,electronic,digital Reado
Astronics Test Systems Inc
Cross-Reference Index
Part NumberManufacturer
2251 PRIMARY Heyco Inc Dba Heyco Products (USA)
Related Parts
5330-00-106-5553INTERCHANGEABLE
GASKET
2-251
6230-00-164-6605INTERCHANGEABLE
FLASHLIGHT
17-4385-100-510
5331-00-165-1966INTERCHANGEABLE
O-RING
M83248/1-251
4820-00-203-2589INTERCHANGEABLE
VALVE,SAFETY RELIEF
2251
4730-00-479-0098INTERCHANGEABLE
ELBOW,PIPE
5331-01-039-3076INTERCHANGEABLE
O-RING
MS28775-251
6625-01-052-2277INTERCHANGEABLE
VOLTMETER
2251
4240-01-263-9349INTERCHANGEABLE
STRAP,MASK
6230-01-270-5981INTERCHANGEABLE
FLASHLIGHT
6619T6
6625-01-371-8269INTERCHANGEABLE
COUNTER,ELECTRONIC,DIGITAL READO
2251
4030-01-418-1973INTERCHANGEABLE
HOOK,RELEASE
225-1
6665-01-528-3124INTERCHANGEABLE
HOLDER,CASSETTE AND CYCLONE
225-1

Frequently Asked Questions

What is NSN 5975-01-400-0600?

NSN 5975-01-400-0600 is a Locknut,electrical Conduit, manufactured by Heyco Inc Dba Heyco Products, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-01-400-0600?

NSN 5975-01-400-0600 has 1 cross-referenced part number: 2251 (Heyco Inc Dba Heyco Products).

What NSN replaces 5975-01-400-0600?

There are 12 known substitutes for 5975-01-400-0600: 5330-00-106-5553, 6230-00-164-6605, 5331-00-165-1966 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2251?

Key specifications for 2251: Width Across Flats: 0.750 INCHES NOMINAL IN; Conduit Size Accommodated: 0.750 INCHES NOMINAL IN; Material: STEEL. 3 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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