PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

L51Junction Box

American Telephone and Telegraph Co · NSN 5975-00-170-3623 · FSC 5975 · No Item Name Available
Verified by PartsTable
NSN 5975-00-170-3623 — this item is cataloged by the U.S. Government under National Stock Number 5975-00-170-3623. Primary manufacturer part number: L51.
Features
  • Junction Box — FSC 5975
  • Material: STEEL COVER
  • Inside Depth: 8.438 INCHES NOMINAL IN
  • Entrance Diameter: 1.250 INCHES AND 0.875 INCHES BOTTOM IN
  • Material: STEEL BODY
  • Cover Type: BLANK
  • Body Length: 48.500 INCHES NOMINAL IN
  • Entrance Quantity: 2 AND 4
Applications
  • Applications requiring Steel Cover construction
General Description

The Junction Box, cataloged under National Stock Number 5975-00-170-3623, 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 American Telephone and Telegraph Co. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5975-00-170-3623
Primary Part NumberL51
Item NameJunction Box
FSC / FSG5975 / 59 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusACTIVE
MaterialSTEEL COVER
Inside Depth8.438 INCHES NOMINAL IN
Entrance Diameter1.250 INCHES AND 0.875 INCHES BOTTOM IN
MaterialSTEEL BODY
Cover TypeBLANK
Body Length48.500 INCHES NOMINAL IN
Entrance Quantity2 AND 4
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2940-00-141-9025 INTERCHANGEABLE
Filter Element,fluid
5975-00-152-1046 INTERCHANGEABLE
Box Connector,electrical
5975-00-152-1144 INTERCHANGEABLE
Box Connector,electrical
5330-00-291-962510455 INTERCHANGEABLE
Seal,plain Encased
Gaf Corp
2520-00-753-51921898X76 INTERCHANGEABLE
Pilot
Kenworth Truck Co a Div of Paccar Inc
5305-01-219-5941L5-1 INTERCHANGEABLE
Screw,shoulder
Mjt Holdings Llc
6520-01-256-5016 INTERCHANGEABLE
Crown,dental,temporary
5330-01-276-8459L51 INTERCHANGEABLE
Gasket
Emglo Products Corp
7610-01-507-0264L51 INTERCHANGEABLE
Manual,technical
Powis Parker Inc
6550-01-523-4910 INTERCHANGEABLE
Test Strip,reagents
Cross-Reference Index
Part NumberManufacturer
L51 American Telephone and Telegraph Co (USA)
L51 Lucent Technologies Inc Corporate Headquarters (USA)
L51 At and T Corp (USA)
Related Parts
2940-00-141-9025INTERCHANGEABLE
FILTER ELEMENT,FLUID
5975-00-152-1046INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5975-00-152-1144INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5330-00-291-9625INTERCHANGEABLE
SEAL,PLAIN ENCASED
10455
2520-00-753-5192INTERCHANGEABLE
PILOT
1898X76
5305-01-219-5941INTERCHANGEABLE
SCREW,SHOULDER
L5-1
6520-01-256-5016INTERCHANGEABLE
CROWN,DENTAL,TEMPORARY
5330-01-276-8459INTERCHANGEABLE
GASKET
L51
7610-01-507-0264INTERCHANGEABLE
MANUAL,TECHNICAL
L51
6550-01-523-4910INTERCHANGEABLE
TEST STRIP,REAGENTS
5330-01-572-8072INTERCHANGEABLE
SEAL RING,METAL
L51

Frequently Asked Questions

What is NSN 5975-00-170-3623?

NSN 5975-00-170-3623 is a Junction Box, manufactured by American Telephone and Telegraph Co, classified under FSC 5975 (No Item Name Available). Status: active.

What are the part numbers for NSN 5975-00-170-3623?

NSN 5975-00-170-3623 has 3 cross-referenced part numbers: L51 (American Telephone and Telegraph Co), L51 (Lucent Technologies Inc Corporate Headquarters), L51 (At and T Corp).

What NSN replaces 5975-00-170-3623?

There are 11 known substitutes for 5975-00-170-3623: 2940-00-141-9025, 5975-00-152-1046, 5975-00-152-1144 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of L51?

Key specifications for L51: Material: STEEL COVER; Inside Depth: 8.438 INCHES NOMINAL IN; Entrance Diameter: 1.250 INCHES AND 0.875 INCHES BOTTOM IN; Material: STEEL BODY. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com