PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520Box Connector,electrical

Abb Installation Products Inc · NSN 5975-00-152-1145 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-152-1145 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-152-1145. Primary manufacturer part number: 520.
Features
  • Box Connector,electrical — FSC 5975
  • End Type: DUPLEX CABLE FIRST END
  • Supplementary Features: END ITEM POSEIDON AND TRIDENT SUBMARINES
  • Material: IRON MALLEABLE OR STEEL
  • Surface Treatment: CADMIUM OR ZINC
  • End Type: EXTERNAL THREAD SECOND END
  • Style Designator: DUPLEX SQUEEZE
  • Nondefinitive Spec/std Data: 1 CLASS AND B STYLE AND I TYPE
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 5975-00-152-1145, 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 Abb Installation Products Inc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5975-00-152-1145
Primary Part Number520
Item NameBox Connector,electrical
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerAbb Installation Products Inc
StatusCANCELLED
End TypeDUPLEX CABLE FIRST END
Supplementary FeaturesEND ITEM POSEIDON AND TRIDENT SUBMARINES
MaterialIRON MALLEABLE OR STEEL
Surface TreatmentCADMIUM OR ZINC
End TypeEXTERNAL THREAD SECOND END
Style DesignatorDUPLEX SQUEEZE
Nondefinitive Spec/std Data1 CLASS AND B STYLE AND I TYPE
Furnished ItemsLOCKNUT
Conduit Type AccommodatedFLEXIBLE METALLIC FIRST END
Item Accommodated Trade Size0.375 INCHES FIRST END IN
Nominal Thread Size0.500 INCHES SECOND END IN
Thread Series DesignatorNPSL SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
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
5975-00-152-1126 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1143 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1146 INTERCHANGEABLE
Box Connector,electrical
5975-00-280-6139 INTERCHANGEABLE
Box Connector,electrical
5975-00-280-7196 INTERCHANGEABLE
Box Connector,electrical
5975-00-556-0412 INTERCHANGEABLE
Box Connector,electrical
Cross-Reference Index
Part NumberManufacturer
520 Abb Installation Products Inc (USA)
FED-STD-157 Federal Standards Promulgated by General Services Administration Washington DC
A-A-50552 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
W-F-406 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AA50552-00I-1-B-F-SZ0.375 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
630 Bridgeport Fittings Inc (USA)
Related Parts
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
5975-00-152-1146INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-280-6139INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-280-7196INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-556-0412INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-665-0113INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL

Frequently Asked Questions

What is NSN 5975-00-152-1145?

NSN 5975-00-152-1145 is a Box Connector,electrical, manufactured by Abb Installation Products Inc, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-152-1145?

NSN 5975-00-152-1145 has 6 cross-referenced part numbers: 520 (Abb Installation Products Inc), FED-STD-157 (Federal Standards Promulgated by General Services Administration Washington DC), A-A-50552 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), W-F-406 (Federal Specifications Promulgated by General Services Administration Washington DC), AA50552-00I-1-B-F-SZ0.375 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 1 more.

What NSN replaces 5975-00-152-1145?

There are 11 known substitutes for 5975-00-152-1145: 5975-00-152-1046, 5975-00-152-1072, 5975-00-152-1123 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 520?

Key specifications for 520: End Type: DUPLEX CABLE FIRST END; Supplementary Features: END ITEM POSEIDON AND TRIDENT SUBMARINES; Material: IRON MALLEABLE OR STEEL; Surface Treatment: CADMIUM OR ZINC. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-152-1145 still in active supply?

NSN 5975-00-152-1145 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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