Measure the threaded ends of your fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.
Tight-Space 37° Flared Fittings for Steel Tubing

- Temperature Range: -20° to 212° F
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
The external hex bolt on these fittings allows for easy installation in cramped spaces. Fittings are also known as banjo-style fittings and JIC (Joint Industrial Council) fittings. They provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are zinc-plated steel, which has fair corrosion resistance.
| For Tube OD | Pipe Size | Thread Size | Thread Pitch, mm | Material | Washer Material | Max. Pressure | Each | |
BSPP Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | __ | Zinc-Plated Steel | Copper | 3,500 psi @ 72° F | 4545K31 | 000000 |
| 3/8" | 3/8 | __ | __ | Zinc-Plated Steel | Copper | 3,000 psi @ 72° F | 4545K311 | 00000 |
Metric Threads | ||||||||
| 1/4" | __ | M10 | 1 | Zinc-Plated Steel | Copper | 3,500 psi @ 72° F | 4545K312 | 00000 |
| 1/4" | __ | M12 | 1.5 | Zinc-Plated Steel | Copper | 3,500 psi @ 72° F | 4545K313 | 00000 |
| 3/8" | __ | M14 | 1.5 | Zinc-Plated Steel | Copper | 3,000 psi @ 72° F | 4545K314 | 00000 |
| 1/2" | __ | M18 | 1.5 | Zinc-Plated Steel | Copper | 3,000 psi @ 72° F | 4545K315 | 00000 |
Tight-Space 37° Flared Fittings for Aluminum Tubing

- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Water
- Tubing: Use with seamless aluminum
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are aluminum, which is lightweight with good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.































