JIC 37° Male x NPT Tapered Male Straight Adaptor

JIC 37° one end, NPT tapered pipe thread the other. The everyday joiner for putting a JIC hose onto the NPT ports found on American pumps, filter heads, gauges and cylinder blocks.

Brand: Ayrtec – mild steel body with a plated finish, manufactured to the standards listed below.

Watch: How to assemble Hydraulic Hose Fittings Introduction Identification and Guide on JIC thread Type

Thread Standards

• JIC 37° Male – SAE J514 37° flare. It seals metal-to-metal on the 37° cone, so it takes no tape at all.
• NPT Tapered Male – ANSI/ASME B1.20.1 tapered pipe thread. It seals on thread interference, so tape or sealant is a must.

How to Choose

• Two different sealing methods. The JIC end seals on the 37° cone with nothing added, the NPT end seals on the thread and needs sealant.
• NPT is 60° and BSPT is 55°. They will start into each other and then chew out, so identify the port rather than assuming.
• Reducing and equal sizes are stocked, so match the hose end and the port separately.

Technicians Advice

Keep sealant off the JIC cone. It gets on there from the same fingers that just did the NPT end, and once it is on the seat the joint will hold on test then seep in service. Do the NPT end first, wipe your hands, then handle the flare.

Where You’ll Find It

• JIC 37° Male – Hose ends and ports on imported US and Asian machinery – Caterpillar, John Deere, Case IH, New Holland, Bobcat, Kubota, Takeuchi.
• NPT Tapered Male – American-built gearboxes, pumps, compressors and older industrial pipework.

Cross-Reference

• JIC 37° Male – SAE J514 / ISO 8434-2 37° flare. Parker call this series Triple-Lok. The industrial cousin of the AN 37° flare used in aviation and motorsport.
• NPT Tapered Male – ANSI/ASME B1.20.1 tapered pipe thread. The dryseal variant is written NPTF.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

📐Dimensions & thread sizes – every size in this range

← Swipe the table sideways to see every measurement →

Part code	A	B	L	H1	Material	Finish
JIM-NTM-0602	3/8" JIC	1/8" NPT	29mm	11.1mm	Mild steel	Plated finish
JIM-NTM-0604	3/8" JIC	1/4" NPT	34mm	15.9mm	Mild steel	Plated finish
JIM-NTM-0702	7/16" JIC	1/8" NPT	31mm	12.7mm	Mild steel	Plated finish
JIM-NTM-0704	7/16" JIC	1/4" NPT	36mm	15.9mm	Mild steel	Plated finish
JIM-NTM-0706	7/16" JIC	3/8" NPT	36mm	20.6mm	Mild steel	Plated finish
JIM-NTM-0708	7/16" JIC	1/2" NPT	43mm	22.2mm	Mild steel	Plated finish
JIM-NTM-0802	1/2" JIC	1/8" NPT	31mm	14.3mm	Mild steel	Plated finish
JIM-NTM-0902	9/16" JIC	1/8" NPT	32mm	15.9mm	Mild steel	Plated finish
JIM-NTM-0904	9/16" JIC	1/4" NPT	36mm	15.9mm	Mild steel	Plated finish
JIM-NTM-0906	9/16" JIC	3/8" NPT	36mm	20.6mm	Mild steel	Plated finish
JIM-NTM-0908	9/16" JIC	1/2" NPT	43mm	22.2mm	Mild steel	Plated finish
JIM-NTM-0912	9/16" JIC	3/4" NPT	45mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1204	3/4" JIC	1/4" NPT	39mm	20.6mm	Mild steel	Plated finish
JIM-NTM-1206	3/4" JIC	3/8" NPT	39mm	20.6mm	Mild steel	Plated finish
JIM-NTM-1208	3/4" JIC	1/2" NPT	46mm	23.8mm	Mild steel	Plated finish
JIM-NTM-1212	3/4" JIC	3/4" NPT	47mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1216	3/4" JIC	1" NPT	52mm	34.9mm	Mild steel	Plated finish
JIM-NTM-1406	7/8" JIC	3/8" NPT	43mm	23.8mm	Mild steel	Plated finish
JIM-NTM-1408	7/8" JIC	1/2" NPT	48mm	23.8mm	Mild steel	Plated finish
JIM-NTM-1412	7/8" JIC	3/4" NPT	50mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1416	7/8" JIC	1" NPT	55mm	34.9mm	Mild steel	Plated finish
JIM-NTM-1706	1.1/16" JIC	3/8" NPT	48mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1708	1.1/16" JIC	1/2" NPT	52mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1712	1.1/16" JIC	3/4" NPT	52mm	28.6mm	Mild steel	Plated finish
JIM-NTM-1716	1.1/16" JIC	1" NPT	57mm	34.9mm	Mild steel	Plated finish
JIM-NTM-1720	1.1/16" JIC	1.1/4" NPT	60mm	42.9mm	Mild steel	Plated finish
JIM-NTM-2108	1.5/16" JIC	1/2" NPT	54mm	34.9mm	Mild steel	Plated finish
JIM-NTM-2112	1.5/16" JIC	3/4" NPT	54mm	34.9mm	Mild steel	Plated finish
JIM-NTM-2116	1.5/16" JIC	1" NPT	58mm	34.9mm	Mild steel	Plated finish
JIM-NTM-2120	1.5/16" JIC	1.1/4" NPT	61mm	42.9mm	Mild steel	Plated finish
JIM-NTM-2124	1.5/16" JIC	1.1/2" NPT	64mm	50.8mm	Mild steel	Plated finish
JIM-NTM-2612	1.5/8" JIC	3/4" NPT	57mm	42.9mm	Mild steel	Plated finish
JIM-NTM-2616	1.5/8" JIC	1" NPT	62mm	42.9mm	Mild steel	Plated finish
JIM-NTM-2620	1.5/8" JIC	1.1/4" NPT	62mm	42.9mm	Mild steel	Plated finish
JIM-NTM-2624	1.5/8" JIC	1.1/2" NPT	65mm	50.8mm	Mild steel	Plated finish
JIM-NTM-3020	1.7/8" JIC	1.1/4" NPT	67mm	50.8mm	Mild steel	Plated finish
JIM-NTM-3024	1.7/8" JIC	1.1/2" NPT	68mm	50.8mm	Mild steel	Plated finish
JIM-NTM-3032	1.7/8" JIC	2" NPT	73mm	66.7mm	Mild steel	Plated finish
JIM-NTM-4024	2.1/2" JIC	1.1/2" NPT	78mm	66.7mm	Mild steel	Plated finish
JIM-NTM-4032	2.1/2" JIC	2" NPT	79mm	66.7mm	Mild steel	Plated finish
NTM-JIM-0408	1/2" JIC	1/4" NPT	36mm	15.9mm	Mild steel	Plated finish

Key: L overall length, H1 centre to face 2. Measurements in millimetres unless shown otherwise. Thread columns show what each end mates with. Dimensions are nominal – check critical clearances against the part.

Downloads

📄 Thread Identification Chart (PDF)

Same Threads, Other Angles

🔗 45° Compact – same threads🔗 90° Compact – same threads

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