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PartsTable / COMPONENT / 149 ITEM 74
149 ITEM 74 ✓ 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

The PARTS KIT,ELECTRONIC EQUIPMENT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 4140 OVERALL, nut_style: HEXAGON, case_style: SQUARE, nut_height: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN, seal_width: 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, grip_length: 0.220 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-290-4138, 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
149 ITEM 74
NSN: 4730-01-290-4138
FSC: 4730
CAGE: K7018 — WELLMAN GROUP (GBR)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 4140 OVERALL
nut_styleHEXAGON
case_styleSQUARE
nut_height0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
seal_width0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
grip_length0.220 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
head_height0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
lubricationCETYL ALCOHOL
shank_styleSTUMP
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
thread_class2A LOCATION NOT OTHERWISE SPECIFIED A
document_typeMFR DRAWING
NSN4730-01-290-4138
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 149 ITEM 74 · 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 14
14974AInterchangeable
interchangeable cross-reference
interchangeable
3H4579AV7Interchangeable
interchangeable cross-reference
interchangeable
3A753Interchangeable
interchangeable cross-reference
interchangeable
83091160Interchangeable
interchangeable cross-reference
interchangeable
SD63521Interchangeable
interchangeable cross-reference
interchangeable
14974Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 149 ITEM 74?
149 ITEM 74 is a PARTS KIT,ELECTRONIC EQUIPMENT.
What parts can replace 149 ITEM 74?
There are 14 known substitutes for 149 ITEM 74: 14974A, 3H4579AV7, 3A753 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 149 ITEM 74?
149 ITEM 74 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-290-4138. 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