Hydraulic Hex Head Screw Plugs

hydraulic hex head screw plugs are threaded plugs with an external hexagonal head, specifically designed for sealing the ports of hydraulic systems. Their main function is to seal and block process holes, inspection ports, or discharge ports on hydraulic valve blocks, oil circuit boards, pump stations, or actuating elements.

Typical characteristics

The typical features of hydraulic hex head screw plugs are as follows:

Drive method: Hexagonal head. It can be installed and disassembled using a standard open-end wrench or socket. It is highly suitable for working environments requiring significant tightening force.

Thread type: Common types include metric threads (M), BSPP (G), BSPT (R), NPT, UNF, etc. They can be matched with hydraulic interfaces from different countries and different standards, and have strong versatility.

Sealing method:

End face seal: Used in conjunction with combined gaskets, O-rings or ED sealing rings.

Threaded seal: The conical thread achieves sealing between metals through its own deformation. Usually, a material tape is wound or sealant is used.

Material: Carbon steel (with surface galvanization, nickel plating or duralumin), stainless steel (304/316L) or brass, to ensure the pressure resistance and corrosion resistance of the hydraulic hex head screw plugs.

FAQ

（1）What standards do your hydraulic hex head screw plugs comply with?

Our products comply with international standards such as DIN 908, DIN 910, ISO 1179-1 and DIN 3852. We can also provide customized production according to customer requirements.

（2）What sealing methods do you offer?

We offer two main types of sealing methods:

Face seal: Utilize combined gaskets, O-rings or ED sealing rings.

Thread seal: Rely on the self-sealing property of the threads. Usually, it requires winding sealing tape or using thread sealant.

（3）What materials and surface treatments are available?

Materials: Carbon steel, stainless steel, brass.

Surface treatments: Galvanization, nickel plating, Dacromet, blackening.

If the customer has any special requirements, we can also provide customized options.