| Category | Customization Details & Range |
|---|---|
| Product Types | 1/2-14 NPT*3/4-16UNF bulkhead fittings |
| Manufacturing Processes | Hot Forging / Red Punching: Eliminates internal porosity and enhances high-pressure resistance. Cold Heading: Ideal for high-speed, cost-effective mass production. Precision CNC Machining: Secondary processing for ultra-tight tolerances. |
| Carbon Steel Material | ANSI 1045 (Equivalents: GB 45, ISO C45, EN 1.1191, JIS S45C) |
| Precision / Tolerance | Standard Tolerance: ±0.02mm |
| Thread Standards | NPT ,UNF |
| Surface Treatment | Zinc Plating (Blue/Yellow), |
| Production Capacity | Equipped with 60 sets of precision CNC Lathes integrated with Automated Truss Robots. |
| MOQ & Lead Time | MOQ 2000pcs. |
Standard Bulkhead Fitting Sizing Chart & Thread Dimensions
| Item no | Outer thread size (B) | Inner pipe size | LENGTH (mm) | HEX Size (mm) |
|---|---|---|---|---|
| 3/4 bulkhead fitting | 3/4-16UNF | 1/4-18NPT | 35.6mm | 31.75mm |
| 3/4 bulkhead fitting | 3/4-16UNF | 1/4-18NPT | 24.13mm | 25.4mm |
| 3/4 bulkhead fitting | 3/4-16UNF | 1/4-18NPT | 38.1mm | 25.4mm |
| 1/2 bulkhead fitting | 1-1/8-12UNF | 1/2-14NPT | 38.1mm | 31.75mm |
| 1-14 bulkhead fitting | 1-14UNF | 3/8-18NPT | 35.6 mm | 31.75mm |
| 1-1/8 bulkhead fitting | 1-1/8-12UNF | 1/2-14NPT+3/8+18NPT | 38.1 mm | 31.75mm |
What are the exact thread sizes for this bulkhead fitting?
This fitting features a combination of 1/2-14 NPT (National Pipe Taper) thread on one end and 3/4-16 UNF (Unified National Fine) straight thread on the other. This specific configuration is engineered to match standard heavy-duty truck port and line connections seamlessly.
What is the overall length of this steel fitting?
The total overall length of this bulkhead fitting is 54.4 mm (approx. 2.14 inches), designed with a standard shank length to securely mount through truck chassis, air tanks, or fluid line panels.
What type of truck systems is this bulkhead fitting used for?
It is widely used in commercial vehicle applications, including air brake systems, fluid transfer lines, and hydraulic circuits on heavy-duty trucks and trailers, ensuring a high-pressure, leak-proof barrier through partition walls.
Is this part an OEM or an aftermarket replacement?
This is a high-quality aftermarket replacement part manufactured to meet or exceed OEM performance specifications, offering reliable durability at a competitive cost.
Do you support custom manufacturing or OEM/ODM orders?
Yes! As a direct precision CNC manufacturing factory, we fully support custom material grades (such as brass, stainless steel, or carbon steel), non-standard lengths, and custom thread configurations based on your technical drawings or samples.
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