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1591A ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include overall_width: 24.000 INCHES NOMINAL IN, overall_height: 49.250 INCHES MAXIMUM IN, overall_length: 24.000 INCHES NOMINAL IN, pressure_rating: ERR-060, special_features: 10 TON CAPACITY, fsc_application_data: RADAR SET,NONAIRBORNE,EXCEPT FIRE CONTROL AND GUIDED MISSILE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-305-9784, 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
1591A
NSN: 4730-00-305-9784
FSC: 4730
CAGE: 80072 — H20 TANK INC U S MOTORS DIV (USA)
SPECIFICATIONS
overall_width24.000 INCHES NOMINAL IN
overall_height49.250 INCHES MAXIMUM IN
overall_length24.000 INCHES NOMINAL IN
pressure_ratingERR-060
special_features10 TON CAPACITY
fsc_application_dataRADAR SET,NONAIRBORNE,EXCEPT FIRE CONTROL AND GUIDED MISSILE
accessory_components_and_quantity8 FT. AIR HOSE, 1 FT
electrical_power_source_relationshipOPERATING
NSN4730-00-305-9784
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1591A · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
87-0502Interchangeable
interchangeable cross-reference
interchangeable
107403Interchangeable
interchangeable cross-reference
interchangeable
42294Interchangeable
interchangeable cross-reference
interchangeable
WD-42-AInterchangeable
interchangeable cross-reference
interchangeable
1591Interchangeable
interchangeable cross-reference
interchangeable
T-1591Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1591A?
1591A is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace 1591A?
There are 17 known substitutes for 1591A: 87-0502, 107403, 42294 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1591A?
1591A is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-305-9784. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026