316 Stainless Steel BSP Tapered Male Plug

A solid 316 stainless BSP Tapered Male plug for blanking off ports on pumps, valves, manifolds and blocks. It will not rust into the port in salt air or washdown areas.

Material: 316 stainless steel, 4 sizes in this listing. Pick your size above and it is on its way.

Thread Standards

• BSP Tapered Male – BSPT to ISO 7 / BS 21. Seals on the tapered thread itself, so it needs thread sealant.

How to Choose

• Match the thread form first (BSPT or JIC), then the size.
• Measure the thread outside diameter and compare it to the size chart if the port is unmarked.
• Tapered plugs need sealant. JIC plugs seal on the 37° cone and take none.

Technicians Advice

A tapered stainless plug is the easiest thing in the shop to over-tighten. Two to three turns past hand tight with sealant on the thread is plenty. Crank it further and you either gall it into the port or crack a cast housing. Keep one of each size in the van for blanking a pump or valve port while you are chasing a fault.

Where You’ll Find It

• Boats and ferries: steering rams, deck cranes, anchor winches and anything that lives in salt spray.
• Food, dairy and beverage plants where lines are washed down with caustic and hot water every shift.
• Chemical dosing, water treatment and mine wash bays where zinc plating is gone in months.

Sizes in this listing

Stock levels update every business day. Anything showing as a pre-order is on its way into stock, call us for the expected date.

Downloads

📄 Thread Identification Chart (PDF)

See the full 316 stainless range

Express shipping Australia-wide. We dispatch daily to every state and territory, plus regional and remote sites.

Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.