Thread size: G1/2 male external thread Drive: internal hex socket Head: countersunk Thread compatibility: G external thread for connection to pipes or fittings with internal threads Material: Brass Benefits: Corrosion resistant, ductile at high temperatures, and low magnetic permeability. The recessed hex drive allows secure tightening, and the countersunk head provides a flush profile with increased load bearing on the head. What it does: A recessed-hex countersunk plug that seals the end of a pipe or fitting by threading into a female internal thread, creating a reliable closure. Compatibility note: Designed for pipes/fittings with G1/2 BSP internal threads. Applications - Seal and close the end of a water supply line or other non-hazardous fluid line during installation or maintenance. - Temporarily block a branch or section of a pneumatic or hydraulic line for testing or servicing. - Use in test rigs or commissioning setups where a quick, secure end closure is required.