PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8721Box Connector,electrical

Thomas and Betts Corp · NSN 5975-00-925-9314 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-925-9314 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-925-9314. Primary manufacturer part number: 8721.
Features
  • Box Connector,electrical — FSC 5975
  • Nondefinitive Spec/std Data: 1 CLASS AND B KIND AND 1 STYLE AND II TYPE
  • Style Designator: STRAIGHT
  • End Type: EXTERNAL THREAD SECOND END
  • Hazardous Locations/environmental Protection: CEMENT TIGHT
  • Surface Treatment: CADMIUM OR ZINC
  • Furnished Items: LOCKNUT
  • End Type: COMPRESSION RING AND NUT FIRST END
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 5975-00-925-9314, 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 Thomas and Betts Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 8 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
NSN5975-00-925-9314
Primary Part Number8721
Item NameBox Connector,electrical
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerThomas and Betts Corp
StatusCANCELLED
Nondefinitive Spec/std Data1 CLASS AND B KIND AND 1 STYLE AND II TYPE
Style DesignatorSTRAIGHT
End TypeEXTERNAL THREAD SECOND END
Hazardous Locations/environmental ProtectionCEMENT TIGHT
Surface TreatmentCADMIUM OR ZINC
Furnished ItemsLOCKNUT
End TypeCOMPRESSION RING AND NUT FIRST END
Conduit Type AccommodatedRIGID METALLIC THICKWALL FIRST END
Item Accommodated Trade Size2.500 INCHES FIRST END IN
MaterialIRON MALLEABLE OR STEEL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-101-802624BG113D INTERCHANGEABLE
Resistor,fixed,wire Wound
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5310-00-111-3639 INTERCHANGEABLE
Nut,sleeve
5950-00-147-1398304441 INTERCHANGEABLE
Reactor
Naval Ship Systems Command
3110-00-151-95608721 INTERCHANGEABLE
Bearing,roller,tapered
Eaton Corporation Dba Airflex Div Div Airflex
6105-00-164-1046114098 INTERCHANGEABLE
Motor,direct Current
Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
5310-00-176-8109AN320-5 INTERCHANGEABLE
Nut,plain,slotted,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4820-00-238-6473 INTERCHANGEABLE
Valve,safety Relief
5950-00-252-041231250 INTERCHANGEABLE
Transformer,radio Frequency
Pax Mfg Corp Hammarlund Mfg Co Div
5360-00-257-30251756 INTERCHANGEABLE
Spring,helical,compression
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5935-00-259-44158721 INTERCHANGEABLE
Connector,receptacle,electrical
Western Union Telegraph Co Sub of Western Union Corp
Cross-Reference Index
Part NumberManufacturer
8721 Thomas and Betts Corp (USA)
HC-407 Abb Installation Products Inc (USA)
W-F-408-2-1-B-1-07-S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
31-250 Egs Electric Co Llc (USA)
WF408 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-50553 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
HC-407 Thomas and Betts Corp American Electric Div Oem Group Memphis Tn (USA)
AA50553-2-1-G-07-S Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
NTC-250 Egs Electrical Group Appleton Div (USA)
1756 Efcor Inc
AA50553-2-1-B-1-07-S Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
8721 Abb Installation Products Inc (USA)
Related Parts
5905-00-101-8026INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
24BG113D
5310-00-111-3639INTERCHANGEABLE
NUT,SLEEVE
5950-00-147-1398INTERCHANGEABLE
REACTOR
304441
3110-00-151-9560INTERCHANGEABLE
BEARING,ROLLER,TAPERED
8721
6105-00-164-1046INTERCHANGEABLE
MOTOR,DIRECT CURRENT
114098
5310-00-176-8109INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
AN320-5
4820-00-238-6473INTERCHANGEABLE
VALVE,SAFETY RELIEF
5950-00-252-0412INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
31250
5360-00-257-3025INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1756
5935-00-259-4415INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8721
4730-00-326-2443INTERCHANGEABLE
RESTRICTOR UNIT,FLUID FLOW
5962-00-365-5977INTERCHANGEABLE
MICROCIRCUIT,LINEAR
156-0277-00

Frequently Asked Questions

What is NSN 5975-00-925-9314?

NSN 5975-00-925-9314 is a Box Connector,electrical, manufactured by Thomas and Betts Corp, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-925-9314?

NSN 5975-00-925-9314 has 12 cross-referenced part numbers: 8721 (Thomas and Betts Corp), HC-407 (Abb Installation Products Inc), W-F-408-2-1-B-1-07-S (Federal Specifications Promulgated by General Services Administration Washington DC), 31-250 (Egs Electric Co Llc), WF408 (Federal Specifications Promulgated by General Services Administration Washington DC) and 7 more.

What NSN replaces 5975-00-925-9314?

There are 12 known substitutes for 5975-00-925-9314: 5905-00-101-8026, 5310-00-111-3639, 5950-00-147-1398 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8721?

Key specifications for 8721: Nondefinitive Spec/std Data: 1 CLASS AND B KIND AND 1 STYLE AND II TYPE; Style Designator: STRAIGHT; End Type: EXTERNAL THREAD SECOND END; Hazardous Locations/environmental Protection: CEMENT TIGHT. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-925-9314 still in active supply?

NSN 5975-00-925-9314 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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