PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5603Junction Box

Reliance Comm/tec Corp Reliable Electric Div Utility Products · NSN 5975-00-933-7678 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-933-7678 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-933-7678. Primary manufacturer part number: 5603.
Features
  • Junction Box — FSC 5975
  • Style Designator: RECTANGULAR-SQUARE CORNER BOX
  • Material: STEEL OVERALL
  • Body Width: 11.000 INCHES NOMINAL IN
  • Inside Depth: 2.500 INCHES NOMINAL IN
  • Body Length: 20.500 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Reliance Comm/tec Corp Reliable Electric Div Utility Products
Applications
  • Applications requiring Steel Overall construction
General Description

The Junction Box, cataloged under National Stock Number 5975-00-933-7678, 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 Reliance Comm/tec Corp Reliable Electric Div Utility Products. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5975-00-933-7678
Primary Part Number5603
Item NameJunction Box
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerReliance Comm/tec Corp Reliable Electric Div Utility Products
StatusACTIVE
Style DesignatorRECTANGULAR-SQUARE CORNER BOX
MaterialSTEEL OVERALL
Body Width11.000 INCHES NOMINAL IN
Inside Depth2.500 INCHES NOMINAL IN
Body Length20.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-230-1195R716 INTERCHANGEABLE
Clip,electrical
Dietzgen Corp
6695-00-252-7763 INTERCHANGEABLE
Light,instrument
5985-00-256-6746522-4491144 INTERCHANGEABLE
Guard,erecting Shea
Naval Ship Systems Command
3040-00-279-24921097-6982 INTERCHANGEABLE
Cylinder Assembly,actuating,line
Wheeler Fleet Solutions, Co.
5360-00-360-44898063275 INTERCHANGEABLE
Spring,helical,compression
General Motors Corp
4210-00-398-5061 INTERCHANGEABLE
Valve,bypass
6515-00-406-1286 INTERCHANGEABLE
Syringe,hypodermic
1620-00-829-76595603-5 INTERCHANGEABLE
Arm Assembly,torque,landing Gear
Goodrich Aerospace Canada Ltd
6525-01-217-55755-603 INTERCHANGEABLE
X-Ray Apparatus,radiographic,med
Defense Medical Standardization Board
5133-01-336-054256003 INTERCHANGEABLE
Countersink
Ultra Tool International Inc
Cross-Reference Index
Part NumberManufacturer
5603 Reliance Comm/tec Corp Reliable Electric Div Utility Products (USA)
S8269 Gte Communication Systems Corp (USA)
Related Parts
5999-00-230-1195INTERCHANGEABLE
CLIP,ELECTRICAL
R716
6695-00-252-7763INTERCHANGEABLE
LIGHT,INSTRUMENT
5985-00-256-6746INTERCHANGEABLE
GUARD,ERECTING SHEA
522-4491144
3040-00-279-2492INTERCHANGEABLE
CYLINDER ASSEMBLY,ACTUATING,LINE
1097-6982
5360-00-360-4489INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8063275
4210-00-398-5061INTERCHANGEABLE
VALVE,BYPASS
6515-00-406-1286INTERCHANGEABLE
SYRINGE,HYPODERMIC
1620-00-829-7659INTERCHANGEABLE
ARM ASSEMBLY,TORQUE,LANDING GEAR
5603-5
6525-01-217-5575INTERCHANGEABLE
X-RAY APPARATUS,RADIOGRAPHIC,MED
5-603
5133-01-336-0542INTERCHANGEABLE
COUNTERSINK
56003
5365-01-423-0634INTERCHANGEABLE
RING,EXTERNALLY THREADED
5603
5305-01-513-7488INTERCHANGEABLE
SCREW,MACHINE
8036088

Frequently Asked Questions

What is NSN 5975-00-933-7678?

NSN 5975-00-933-7678 is a Junction Box, manufactured by Reliance Comm/tec Corp Reliable Electric Div Utility Products, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-00-933-7678?

NSN 5975-00-933-7678 has 2 cross-referenced part numbers: 5603 (Reliance Comm/tec Corp Reliable Electric Div Utility Products), S8269 (Gte Communication Systems Corp).

What NSN replaces 5975-00-933-7678?

There are 12 known substitutes for 5975-00-933-7678: 5999-00-230-1195, 6695-00-252-7763, 5985-00-256-6746 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5603?

Key specifications for 5603: Style Designator: RECTANGULAR-SQUARE CORNER BOX; Material: STEEL OVERALL; Body Width: 11.000 INCHES NOMINAL IN; Inside Depth: 2.500 INCHES NOMINAL IN. 5 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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