45# Steel Male Countersunk Head Tube Fittings for Oil Gas Hydraulic Applications

It's a countersunk head with male threads, machined from 45# steel or stainles steel or even brass — you pick material based on what your system needs. We usually have the metric thread version in stock, but confirm lead time if you need something outside the standard DIN spec.

Basically, these fittings handle high presure in hydraulic systems, oil transfer, and gas delivery without leaking. They're not really suited for low-pressure air lines or food-grade stuff, just so you know. Most buyers go with the galvanized finish for better corrosion resistance, and you'll see silver or yellow depending on the batch.

Operating temp runs from -20°C to 120°C, which covers most industiral environments. The CNC machining gives it a tight tolerance — better than generic fittings for consistent sealing. 4. One thing someone might not think to ask: teh countersunk head sits flush, so it works well in tight spaces where a hex head would snag on hoses or guards.

We've handled these for years, and they typically ship with a COA and TDS on request. The 1J model is pretty much a standard for high-pressure hydraulic lines, so you'll find it in mining and construction rigs. 5. Also, the suface treatment isn't just for looks — it's galvanized to hold up in corrosive environments, though it's not stainless steel level, obviously.

MOQ is usually 50 units or so for the 45# steel version, but we can do smaller runs if you're testing a new setup. The precision rating is high, but don't expect it to work with every thread pitch — it's metric only, so check your system first.