PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8421Box Connector,electrical

Abb Installation Products Inc · NSN 5975-00-950-6409 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-950-6409 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-950-6409. Primary manufacturer part number: 8421.
Features
  • Box Connector,electrical — FSC 5975
  • Conduit Type Accommodated: RIGID METALLIC THICKWALL FIRST END
  • End Type: EXTERNAL THREAD SECOND END
  • Surface Treatment: ZINC
  • Item Accommodated Trade Size: 1.250 INCHES FIRST END IN
  • Furnished Items: LOCKNUT AND RETAINING RING
  • Style Designator: STRAIGHT
  • End Type: GLAND NUT W/INTERNAL THREAD FIRST END
Applications
  • Electrical interconnection
  • Signal interface mating
  • Quick-disconnect coupling
  • Applications requiring Iron Malleable construction
General Description

The Box Connector,electrical, cataloged under National Stock Number 5975-00-950-6409, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, 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
NSN5975-00-950-6409
Primary Part Number8421
Item NameBox Connector,electrical
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerAbb Installation Products Inc
StatusACTIVE
Conduit Type AccommodatedRIGID METALLIC THICKWALL FIRST END
End TypeEXTERNAL THREAD SECOND END
Surface TreatmentZINC
Item Accommodated Trade Size1.250 INCHES FIRST END IN
Furnished ItemsLOCKNUT AND RETAINING RING
Style DesignatorSTRAIGHT
End TypeGLAND NUT W/INTERNAL THREAD FIRST END
MaterialIRON MALLEABLE
Hazardous Locations/environmental ProtectionCEMENT TIGHT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5975-00-091-0482MT1145APA74 INTERCHANGEABLE
Rack,electrical Equipment
Joint Electronics Type Designation System
4820-00-097-9764 INTERCHANGEABLE
Cup,valve
5340-00-118-6506 INTERCHANGEABLE
Clevis,rod End
1450-00-216-8865TM9005-50 INTERCHANGEABLE
Maintenance Platform Section
Yale Industrial Products, Inc. Div Duff Norton Company
5136-00-224-71135136-00-224-7113 INTERCHANGEABLE
Diestock
General Services Administration Federal Supply Service
5360-00-253-725711583 INTERCHANGEABLE
Spring,helical,compression
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5950-00-253-7330 INTERCHANGEABLE
Coil,radio Frequency
4310-00-364-84761805 INTERCHANGEABLE
Head,unloader,compressor
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
2090-00-372-6064TYPE I - STANDARD INTERCHANGEABLE
Repair Kit,standard
Naval Ship Systems Command
1075-00-383-82963134768C INTERCHANGEABLE
Diaphragm,starboard
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
1753 Efcor Inc
8421 PRIMARY Abb Installation Products Inc (USA)
31-125 Egs Electric Co Llc (USA)
AS8384 Abb Installation Products Inc (USA)
HC-404 Abb Installation Products Inc (USA)
1805 Raco, a Division of Hubbell Incorporated(delaware) (USA)
CPR4 Midwest Electric Mfg Corp Sub of Crouse-Hinds Co (USA)
NTC-125 Egs Electrical Group Appleton Div (USA)
Related Parts
5975-00-091-0482INTERCHANGEABLE
RACK,ELECTRICAL EQUIPMENT
MT1145APA74
4820-00-097-9764INTERCHANGEABLE
CUP,VALVE
5340-00-118-6506INTERCHANGEABLE
CLEVIS,ROD END
1450-00-216-8865INTERCHANGEABLE
MAINTENANCE PLATFORM SECTION
TM9005-50
5136-00-224-7113INTERCHANGEABLE
DIESTOCK
5136-00-224-7113
5360-00-253-7257INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
11583
5950-00-253-7330INTERCHANGEABLE
COIL,RADIO FREQUENCY
4310-00-364-8476INTERCHANGEABLE
HEAD,UNLOADER,COMPRESSOR
1805
2090-00-372-6064INTERCHANGEABLE
REPAIR KIT,STANDARD
TYPE I - STANDARD
1075-00-383-8296INTERCHANGEABLE
DIAPHRAGM,STARBOARD
3134768C
5905-00-402-4235INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
16738914-017
6625-00-477-7844INTERCHANGEABLE
INDICATOR,DIGITAL DISPLAY
003086

Frequently Asked Questions

What is NSN 5975-00-950-6409?

NSN 5975-00-950-6409 is a Box Connector,electrical, manufactured by Abb Installation Products Inc, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-00-950-6409?

NSN 5975-00-950-6409 has 8 cross-referenced part numbers: 1753 (Efcor Inc), 8421 (Abb Installation Products Inc), 31-125 (Egs Electric Co Llc), AS8384 (Abb Installation Products Inc), HC-404 (Abb Installation Products Inc) and 3 more.

What NSN replaces 5975-00-950-6409?

There are 12 known substitutes for 5975-00-950-6409: 5975-00-091-0482, 4820-00-097-9764, 5340-00-118-6506 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8421?

Key specifications for 8421: Conduit Type Accommodated: RIGID METALLIC THICKWALL FIRST END; End Type: EXTERNAL THREAD SECOND END; Surface Treatment: ZINC; Item Accommodated Trade Size: 1.250 INCHES FIRST END IN. 9 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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