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521588 — JACK BOX

✓ Government record, cited
— · WIRE CABLE
PRODUCT OVERVIEW

521588: JACK BOX.

The JACK BOX is a the manufacturer industrial component. Key specifications include overall_width: 3.850 INCHES NOMINAL IN, overall_height: 0.562 INCHES MAXIMUM IN, overall_length: 7.000 INCHES NOMINAL IN, style_designator: ROUND, SURFACE MOUNTING, end_item_identification: MK1 MOD Q LSO HUD, entrance_type_and_quantity: 1 ELECTRICAL CONNECTOR AND 1 STUFFING BOX. This part is cataloged in the U.S.

Government catalog under NSN 6145-00-937-3536, 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
521588
NSN: 6145-00-937-3536
NIINs: 009373536, 010637387, 013593892, 016998265
FSC: 6145 — Wire and Cable, Electrical
CAGE: 12431 — COMSPACE CORP ARKAY INTL DIV (USA)
SPECIFICATIONS
overall_width3.850 INCHES NOMINAL IN
overall_height0.562 INCHES MAXIMUM IN
overall_length7.000 INCHES NOMINAL IN
style_designatorROUND, SURFACE MOUNTING
end_item_identificationMK1 MOD Q LSO HUD
entrance_type_and_quantity1 ELECTRICAL CONNECTOR AND 1 STUFFING BOX
part_name_assigned_by_controlling_agencyPENDANT SWITCH JACKBOX ASSEMBLY
NSN6145-00-937-3536
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 521588 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 521588?
521588 is a JACK BOX.
What is the NSN for 521588?
521588 is cataloged in the U.S. Government catalog under NSN 6145-00-937-3536. 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.