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Technical Data Sheet
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74388A ✓ 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,WIRE WOUND,NON. Key specifications include width: 4.98 MILLIMETERS NOMINAL MM, height: 1.65 MILLIMETERS NOMINAL MM, length: 1.90 MILLIMETERS NOMINAL MM, diameter: 34.00 MILLIMETERS NOMINAL MM, body_style: CYLINDRICAL BUSHING MOUNTED, body_width: 0.968 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-1271, 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
74388A
NSN: 4730-00-289-1271
FSC: 4730
CAGE: 00742 — AIR PRODUCTS & CHEMICALS, INC (USA)
SPECIFICATIONS
width4.98 MILLIMETERS NOMINAL MM
height1.65 MILLIMETERS NOMINAL MM
length1.90 MILLIMETERS NOMINAL MM
diameter34.00 MILLIMETERS NOMINAL MM
body_styleCYLINDRICAL BUSHING MOUNTED
body_width0.968 INCHES MAXIMUM IN
body_height0.937 INCHES MAXIMUM IN
body_length1.125 INCHES MAXIMUM IN
shaft_styleROUND, SLOTTED
constructionSLOT WOUND
shaft_length0.875 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
NSN4730-00-289-1271
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 74388A · 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 24
2501-4Interchangeable
interchangeable cross-reference
interchangeable
WE-503 3INInterchangeable
interchangeable cross-reference
interchangeable
607-2 3INInterchangeable
interchangeable cross-reference
interchangeable
9975199-25Interchangeable
interchangeable cross-reference
interchangeable
607-2INInterchangeable
interchangeable cross-reference
interchangeable
6250Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74388A?
74388A is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 74388A?
There are 24 known substitutes for 74388A: 2501-4, WE-503 3IN, 607-2 3IN and 21 more. Substitute compatibility should be verified for your specific system.
Is 74388A still available?
74388A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026