PartsTable
Technical Data Sheet

53151-1/2-3/4 — EXTENSION,JUNCTION BOX

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

53151-1/2-3/4: EXTENSION,JUNCTION BOX.

The EXTENSION,JUNCTION BOX is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, inside_depth: 1.500 INCHES NOMINAL IN, overall_width: 4.000 INCHES NOMINAL IN, special_features: ATTACHES TO ONE OR TWO GANG SWITCH BOXES; TWO 1/2 IN. KNOCKOUTS ON EACH SIDE, ONE 3/4 INCH KNOCKOUT ON EACH SIDE IN, style_designator: SQUARE, entrance_diameter: 0.500 INCHES AND 0.750 INCHES SIDES IN.

This part is cataloged in the U.S. Government catalog under NSN 5975-01-406-1891, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
53151-1/2-3/4
NSN: 5975-01-406-1891
FSC: 5975 — Electrical Hardware and Supplies
CAGE: 56501 — ABB INSTALLATION PRODUCTS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
inside_depth1.500 INCHES NOMINAL IN
overall_width4.000 INCHES NOMINAL IN
special_featuresATTACHES TO ONE OR TWO GANG SWITCH BOXES; TWO 1/2 IN. KNOCKOUTS ON EACH SIDE, ONE 3/4 INCH KNOCKOUT ON EACH SIDE IN
style_designatorSQUARE
entrance_diameter0.500 INCHES AND 0.750 INCHES SIDES IN
entrance_quantity8 AND 4
surface_treatmentTIN OVERALL
NSN5975-01-406-1891
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available EXTENSION,JUNCTION BOX TITLE COMPONENT PN 53151-1/2-3/4 MFR EXTENSION,JUNCTION BOX
KEY FEATURES
•
INSIDE DEPTH: 1.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SQUARE
•
ENTRANCE QUANTITY: 8 AND 4
•
SURFACE TREATMENT: TIN OVERALL
•
MATERIAL: STEEL OVERALL
•
ENTRANCE DIAMETER: 0.500 INCHES AND 0.750 INCHES SIDES IN
TECHNICAL CHARACTERISTICS
INSIDE DEPTH1.500 INCHES NOMINAL IN
STYLE DESIGNATORSQUARE
OVERALL WIDTH4.000 INCHES NOMINAL IN
ENTRANCE QUANTITY8 AND 4
SPECIAL FEATURESATTACHES TO ONE OR TWO GANG SWITCH BOXES; TWO 1/2 IN. KNOCKOUTS ON EACH SIDE, ONE 3/4 INCH KNOCKOUT ON EACH SIDE IN
SURFACE TREATMENTTIN OVERALL
MATERIALSTEEL OVERALL
ENTRANCE DIAMETER0.500 INCHES AND 0.750 INCHES SIDES IN
OTHER ITEMS IN FSC 5975 — Electrical Hardware and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5975-00-000-0120 5975-00-000-0126 5975-00-000-7420 5975-00-001-1397 5975-00-001-1538 5975-00-001-1539 5975-00-001-1542 5975-00-001-2444
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 53151-1/2-3/4?
53151-1/2-3/4 is a EXTENSION,JUNCTION BOX.
What is the NSN for 53151-1/2-3/4?
53151-1/2-3/4 is cataloged in the U.S. Government catalog under NSN 5975-01-406-1891. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.