Product Details
This Hexagon Socket Screw Plug is a precision-machined sealing component designed for hydraulic blocks, pneumatic equipment, and machinery housings where reliable threaded closure is essential. Manufactured from corrosion-resistant stainless steel with a clean, uniform thread profile, the plug offers dependable performance across a wide range of industrial applications. As a stainless steel threaded plug, it provides long service life even when exposed to oils, pressure, or repeated installation.
Material Specifications
Material: Stainless Steel 304 or 316
Surface Finish: Machined and polished
Hardness Range: 80–95 HRB (material dependent)
Category: Suitable for industrial sealing hardware
The stainless steel construction ensures durability in demanding environments, including hydraulic fluids, moisture, and cleaning agents.
Dimensional Characteristics
Thread Size: 3/8-18 NPT
Overall Height: Approx. 0.45–0.50 in
Thread Length: Approx. 0.30–0.35 in
Hex Socket Size: 3/16 in internal hex
Head Diameter: 0.55–0.60 in
All dimensions are controlled to maintain proper sealing and stable thread engagement.
Key Features
Precision Internal Hex Socket
A deep, accurately machined hex socket allows installers to apply consistent torque without damaging the socket walls.
Accurate Tapered Thread Profile
The clean NPT thread form ensures smooth engagement and a secure, leak-resistant seal when installed in mating ports.
Corrosion-Resistant Stainless Steel
Engineered to resist rust, wear, and fluid exposure-suitable for both indoor and outdoor machinery.
Stable Sealing in Industrial Use
Ideal for systems with vibration, temperature variation, or pressure fluctuations.
Typical Applications
Hydraulic manifold ports
Pneumatic cylinders and valves
Machinery housings and gear cases
Automotive repair and service equipment
OEM mechanical assemblies
The Hexagon Socket Screw Plug provides consistent, dependable sealing wherever threaded ports require secure closure.
FAQ
Q: What material options are available for this screw plug?
A: We typically supply this plug in Stainless Steel 304 or 316. Both offer excellent rust resistance, while 316 provides enhanced performance in harsher environments such as marine or chemical exposure.
Q: Can the plug be produced in other thread sizes?
A: Yes. Besides 3/8-18 NPT, we can manufacture NPT, BSPT, BSPP, UNF, and metric threads according to your drawing or application requirements.
Q: Is the hex socket strong enough for high-torque installation?
A: The internal hex is machined to maintain tight tolerances, ensuring solid wrench engagement and preventing rounding during high-torque tightening.
Q: Do you support custom machining or OEM production?
A: We can produce according to your drawings, samples, or specific dimensional requirements. Surface treatments and material variations are also available.
Q: What is the typical lead time for production?
A: Lead time depends on order quantity and machining complexity. Standard orders typically ship within 15–25 days.
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