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J1220 — BACKSHELL,ELECTRICAL CONNECTOR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

J1220: BACKSHELL,ELECTRICAL CONNECTOR.

The BACKSHELL,ELECTRICAL CONNECTOR is a the manufacturer industrial component. Key specifications include diameter: 0.375 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thread_class: 2B, overall_width: 1.250 INCHES NOMINAL IN, overall_height: 2.562 INCHES NOMINAL IN, overall_length: 5.130 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-138-7990, 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
J1220
NSN: 5340-01-138-7990
NIINs: 011387990, 013721046, 013790782
FSC: 5340 — Hardware, Commercial
CAGE: 96195 — UNISTRUT INTERNATIONAL CORPORATION DBA UNISTRUT DIVERSIFIED PRODUCTS (USA)
SPECIFICATIONS
diameter0.375 INCHES NOMINAL IN
materialALUMINUM ALLOY
thread_class2B
overall_width1.250 INCHES NOMINAL IN
overall_height2.562 INCHES NOMINAL IN
overall_length5.130 INCHES NOMINAL IN
special_features90.0 DEGREE SPLIT BACKSHELL WITH CABLE CLAMP FOR CANNON DL1-156 CONNECTOR
style_designatorHOOD, SIDE OPENING W/CLAMP
thread_directionRIGHT-HAND
surface_treatmentCADMIUM
nominal_thread_size0.112 INCHES IN
cable_opening_diameter0.500 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
NSN5340-01-138-7990
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: J1220 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DIAMETER: 0.375 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
DIAMETER0.375 INCHES NOMINAL IN
OVERALL LENGTH3.375 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
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 J1220?
J1220 is a BACKSHELL,ELECTRICAL CONNECTOR.
What is the NSN for J1220?
J1220 is cataloged in the U.S. Government catalog under NSN 5340-01-138-7990. 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.