PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LT-75Box Connector,electrical

Midwest Electric Mfg Corp Sub of Crouse-Hinds Co · NSN 5975-00-556-0412 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-556-0412 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-556-0412. Primary manufacturer part number: LT-75.
Features
  • Box Connector,electrical — FSC 5975
  • End Type: EXTERNAL THREAD SECOND END
  • Material: IRON MALLEABLE OR STEEL
  • Conduit Type Accommodated: FLEXIBLE METALLIC FIRST END
  • End Type: GLAND NUT W/INTERNAL THREAD FIRST END
  • Hazardous Locations/environmental Protection: WATERTIGHT-NEMA TYPE 4
  • Item Accommodated Trade Size: 0.750 INCHES FIRST END IN
  • Style Designator: STRAIGHT
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
  • Applications requiring Iron Malleable or Steel construction
General Description

The Box Connector,electrical, cataloged under National Stock Number 5975-00-556-0412, 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 Midwest Electric Mfg Corp Sub of Crouse-Hinds Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 24 commercial cross-references from 19 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
NSN5975-00-556-0412
Primary Part NumberLT-75
Item NameBox Connector,electrical
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerMidwest Electric Mfg Corp Sub of Crouse-Hinds Co
StatusCANCELLED
End TypeEXTERNAL THREAD SECOND END
MaterialIRON MALLEABLE OR STEEL
Conduit Type AccommodatedFLEXIBLE METALLIC FIRST END
End TypeGLAND NUT W/INTERNAL THREAD FIRST END
Hazardous Locations/environmental ProtectionWATERTIGHT-NEMA TYPE 4
Item Accommodated Trade Size0.750 INCHES FIRST END IN
Style DesignatorSTRAIGHT
Surface TreatmentCADMIUM OR ZINC
Nondefinitive Spec/std Data3 CLASS AND I STYLE AND I TYPE
Furnished ItemsLOCKNUT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6130-00-006-452920222 INTERCHANGEABLE
Power Supply
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5360-00-013-3633DS-934401 INTERCHANGEABLE
Spring,helical,compression
Eaton Aerospace, Llc Dba Jackson South
5305-00-019-93175233 INTERCHANGEABLE
Screw,cap,socket Head
Air-Lock, Incorporated
5305-00-094-811720222 INTERCHANGEABLE
Screw
Hydro-Aire Aerospace Corp
3110-00-144-8507 INTERCHANGEABLE
Bearing,ball,annular
5305-00-151-1321MS35198-12 INTERCHANGEABLE
Screw,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5975-00-152-1046 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1072 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1123 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1124 INTERCHANGEABLE
Box Connector,electrical
Cross-Reference Index
Part NumberManufacturer
LT-75 Midwest Electric Mfg Corp Sub of Crouse-Hinds Co (USA)
431LT Bridgeport Fittings Inc (USA)
74347A Air Products & Chemicals, Inc (USA)
AA50553-001-3-I-1 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
E-21-S Atlas Technologies Inc (USA)
4Q75 Delta Electric Supply, Inc (USA)
325956 Telemechanics Inc (USA)
LT-102 Abb Installation Products Inc (USA)
82-20-86 Brooks Automation, Inc. Div Cti Cryogenics (USA)
ST75 Egs Electrical Group Appleton Div (USA)
325956 American Telephone and Telegraph Co (USA)
LMM-21 Neer Mfg Co Inc (USA)
20222 Atlas Technologies Inc (USA)
LT-202 Abb Installation Products Inc (USA)
5233 Abb Installation Products Inc (USA)
5233 Thomas and Betts Ltd (CAN)
WF406 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3403 Raco, a Division of Hubbell Incorporated(delaware) (USA)
142C905H02 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
11-75 Efcor Inc
Related Parts
6130-00-006-4529INTERCHANGEABLE
POWER SUPPLY
20222
5360-00-013-3633INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
DS-934401
5305-00-019-9317INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
5233
5305-00-094-8117INTERCHANGEABLE
SCREW
20222
3110-00-144-8507INTERCHANGEABLE
BEARING,BALL,ANNULAR
5305-00-151-1321INTERCHANGEABLE
SCREW,MACHINE
MS35198-12
5975-00-152-1046INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1072INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1123INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1124INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1126INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1143INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL

Frequently Asked Questions

What is NSN 5975-00-556-0412?

NSN 5975-00-556-0412 is a Box Connector,electrical, manufactured by Midwest Electric Mfg Corp Sub of Crouse-Hinds Co, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-556-0412?

NSN 5975-00-556-0412 has 24 cross-referenced part numbers: LT-75 (Midwest Electric Mfg Corp Sub of Crouse-Hinds Co), 431LT (Bridgeport Fittings Inc), 74347A (Air Products & Chemicals, Inc), AA50553-001-3-I-1 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), E-21-S (Atlas Technologies Inc) and 19 more.

What NSN replaces 5975-00-556-0412?

There are 12 known substitutes for 5975-00-556-0412: 6130-00-006-4529, 5360-00-013-3633, 5305-00-019-9317 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LT-75?

Key specifications for LT-75: End Type: EXTERNAL THREAD SECOND END; Material: IRON MALLEABLE OR STEEL; Conduit Type Accommodated: FLEXIBLE METALLIC FIRST END; End Type: GLAND NUT W/INTERNAL THREAD FIRST END. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-556-0412 still in active supply?

NSN 5975-00-556-0412 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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