PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

STB-4550Box Connector,electrical

Egs Electrical Group Appleton Div · NSN 5975-00-952-0021 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-952-0021 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-952-0021. Primary manufacturer part number: STB-4550.
Features
  • Box Connector,electrical — FSC 5975
  • Deflection Angle: 45.0 DEGREES
  • Conduit Type Accommodated: FLEXIBLE METALLIC FIRST END
  • End Type: GLAND NUT W/INTERNAL THREAD FIRST END
  • Style Designator: ANGLE
  • Hazardous Locations/environmental Protection: LIQUID TIGHT AND WATERTIGHT
  • Item Accommodated Trade Size: 0.500 INCHES FIRST END IN
  • Furnished Items: INSULATED BUSHING AND LOCKNUT
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 5975-00-952-0021, 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 Egs Electrical Group Appleton Div. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 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
NSN5975-00-952-0021
Primary Part NumberSTB-4550
Item NameBox Connector,electrical
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerEgs Electrical Group Appleton Div
StatusACTIVE
Deflection Angle45.0 DEGREES
Conduit Type AccommodatedFLEXIBLE METALLIC FIRST END
End TypeGLAND NUT W/INTERNAL THREAD FIRST END
Style DesignatorANGLE
Hazardous Locations/environmental ProtectionLIQUID TIGHT AND WATERTIGHT
Item Accommodated Trade Size0.500 INCHES FIRST END IN
Furnished ItemsINSULATED BUSHING AND LOCKNUT
MaterialIRON MALLEABLE
End TypeEXTERNAL THREAD SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6680-00-010-8175179703-104 INTERCHANGEABLE
Counter,rotating
Dynapar Corp Div Specialty Product Technologies
5841-00-090-633253-42 INTERCHANGEABLE
Base
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
2810-00-312-8802 INTERCHANGEABLE
Gear and Drive Shaf
5920-00-341-32103562 INTERCHANGEABLE
Fuseholder,block
Cooper Bussmann, Llc Dba Cooper Industries
4330-00-415-9277534-2 INTERCHANGEABLE
Filter,fluid
King Nutronics Corporation Dba King Nutronics
6680-00-419-9592 INTERCHANGEABLE
Meter,flow Rate Indicating
3040-00-460-62943562 INTERCHANGEABLE
Shaft,drive,flexible
Parker Hannifin Corporation Div Chelsea Products Division
5330-00-480-39143562 INTERCHANGEABLE
Seal
Trw Inc Trw Commercial Steering Div
1620-00-612-76345342 INTERCHANGEABLE
Retainer,spring Inl
Circor Aerospace, Inc. Div Circor
5985-00-624-8925 INTERCHANGEABLE
Dummy Load,electrical
Cross-Reference Index
Part NumberManufacturer
19801 Atlas Technologies Inc (USA)
LTB-5045 Midwest Electric Mfg Corp Sub of Crouse-Hinds Co (USA)
13-50B Efcor Inc
3562 Raco, a Division of Hubbell Incorporated(delaware) (USA)
9322087-1 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
STB-4550 PRIMARY Egs Electrical Group Appleton Div (USA)
5342 Abb Installation Products Inc (USA)
LQ5045-IC Berger Industries Inc (USA)
4Q-450-T Egs Electric Co Llc (USA)
Related Parts
6680-00-010-8175INTERCHANGEABLE
COUNTER,ROTATING
179703-104
5841-00-090-6332INTERCHANGEABLE
BASE
53-42
2810-00-312-8802INTERCHANGEABLE
GEAR AND DRIVE SHAF
5920-00-341-3210INTERCHANGEABLE
FUSEHOLDER,BLOCK
3562
4330-00-415-9277INTERCHANGEABLE
FILTER,FLUID
534-2
6680-00-419-9592INTERCHANGEABLE
METER,FLOW RATE INDICATING
3040-00-460-6294INTERCHANGEABLE
SHAFT,DRIVE,FLEXIBLE
3562
5330-00-480-3914INTERCHANGEABLE
SEAL
3562
1620-00-612-7634INTERCHANGEABLE
RETAINER,SPRING INL
5342
5985-00-624-8925INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
5935-00-683-5286INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1980-1
5935-00-702-6024INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5362

Frequently Asked Questions

What is NSN 5975-00-952-0021?

NSN 5975-00-952-0021 is a Box Connector,electrical, manufactured by Egs Electrical Group Appleton Div, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-00-952-0021?

NSN 5975-00-952-0021 has 9 cross-referenced part numbers: 19801 (Atlas Technologies Inc), LTB-5045 (Midwest Electric Mfg Corp Sub of Crouse-Hinds Co), 13-50B (Efcor Inc), 3562 (Raco, a Division of Hubbell Incorporated(delaware)), 9322087-1 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate) and 4 more.

What NSN replaces 5975-00-952-0021?

There are 12 known substitutes for 5975-00-952-0021: 6680-00-010-8175, 5841-00-090-6332, 2810-00-312-8802 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of STB-4550?

Key specifications for STB-4550: Deflection Angle: 45.0 DEGREES; Conduit Type Accommodated: FLEXIBLE METALLIC FIRST END; End Type: GLAND NUT W/INTERNAL THREAD FIRST END; Style Designator: ANGLE. 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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