PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

502BCover,junction Box

Ni Industries Inc Bowers Mfg Co Div · NSN 5975-00-188-1153 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-188-1153 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-188-1153. Primary manufacturer part number: 502B.
Features
  • Cover,junction Box — FSC 5975
  • Cover Type: RAISED
  • Material: STEEL COVER
  • Outside Diameter: 4.000 INCHES NOMINAL IN
  • Cover Mounting Hole Quantity: 2
  • Standard Wiring Device Quantity: 1
  • Cover Opening Shape and Quantity: 1 ROUND
  • Surface Treatment: ZINC OR CADMIUM COVER
Applications
  • Applications requiring Steel Cover construction
General Description

The Cover,junction Box, cataloged under National Stock Number 5975-00-188-1153, 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 Ni Industries Inc Bowers Mfg Co Div. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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: Cancelled.

Technical Specifications
ParameterValue
NSN5975-00-188-1153
Primary Part Number502B
Item NameCover,junction Box
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerNi Industries Inc Bowers Mfg Co Div
StatusCANCELLED
Cover TypeRAISED
MaterialSTEEL COVER
Outside Diameter4.000 INCHES NOMINAL IN
Cover Mounting Hole Quantity2
Standard Wiring Device Quantity1
Cover Opening Shape and Quantity1 ROUND
Surface TreatmentZINC OR CADMIUM COVER
Nondefinitive Spec/std Data8 TYPE AND 46 STYLE AND S SIZE
Supplementary FeaturesEND ITEM LGM-30 MINUTEMAN MISSILE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5975-00-153-6386 INTERCHANGEABLE
Junction Box
5975-00-153-6392 INTERCHANGEABLE
Junction Box
5975-00-153-6397 INTERCHANGEABLE
Junction Box
5975-00-153-6398 INTERCHANGEABLE
Junction Box
5975-00-153-677052C14 INTERCHANGEABLE
Cover,junction Box
Abb Installation Products Inc
5975-00-188-1158404 INTERCHANGEABLE
Cover,junction Box
Ni Industries Inc Bowers Mfg Co Div
5975-00-194-4997 INTERCHANGEABLE
Extension,junction Box
5975-00-194-4998 INTERCHANGEABLE
Extension,junction Box
5975-00-194-8847 INTERCHANGEABLE
Extension,junction Box
5975-00-194-88744SPJD INTERCHANGEABLE
Junction Box
Egs Electrical Group Appleton Div
Cross-Reference Index
Part NumberManufacturer
54C12 Abb Installation Products Inc (USA)
502B PRIMARY Ni Industries Inc Bowers Mfg Co Div (USA)
26L Porter H K Co Inc Electrical Div Ambridge Works (USA)
721 Raco, a Division of Hubbell Incorporated(delaware) (USA)
FEDSTD128 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
54C12 Universal Electric Co (USA)
Related Parts
5975-00-153-6386INTERCHANGEABLE
JUNCTION BOX
5975-00-153-6392INTERCHANGEABLE
JUNCTION BOX
5975-00-153-6397INTERCHANGEABLE
JUNCTION BOX
5975-00-153-6398INTERCHANGEABLE
JUNCTION BOX
5975-00-153-6770INTERCHANGEABLE
COVER,JUNCTION BOX
52C14
5975-00-188-1158INTERCHANGEABLE
COVER,JUNCTION BOX
404
5975-00-194-4997INTERCHANGEABLE
EXTENSION,JUNCTION BOX
5975-00-194-4998INTERCHANGEABLE
EXTENSION,JUNCTION BOX
5975-00-194-8847INTERCHANGEABLE
EXTENSION,JUNCTION BOX
5975-00-194-8874INTERCHANGEABLE
JUNCTION BOX
4SPJD
5975-00-194-8878INTERCHANGEABLE
JUNCTION BOX
5975-00-281-0052INTERCHANGEABLE
COVER,JUNCTION BOX
450

Frequently Asked Questions

What is NSN 5975-00-188-1153?

NSN 5975-00-188-1153 is a Cover,junction Box, manufactured by Ni Industries Inc Bowers Mfg Co Div, classified under FSC 5975 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5975-00-188-1153?

NSN 5975-00-188-1153 has 6 cross-referenced part numbers: 54C12 (Abb Installation Products Inc), 502B (Ni Industries Inc Bowers Mfg Co Div), 26L (Porter H K Co Inc Electrical Div Ambridge Works), 721 (Raco, a Division of Hubbell Incorporated(delaware)), FEDSTD128 (Federal Specifications Promulgated by General Services Administration Washington DC) and 1 more.

What NSN replaces 5975-00-188-1153?

There are 12 known substitutes for 5975-00-188-1153: 5975-00-153-6386, 5975-00-153-6392, 5975-00-153-6397 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 502B?

Key specifications for 502B: Overall Height: 0.625 INCHES NOMINAL IN; Cover Type: RAISED; Material: STEEL COVER; Outside Diameter: 4.000 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5975-00-188-1153 still in active supply?

NSN 5975-00-188-1153 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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