M20 x 1.5 Stainless Steel Allen Key Plug with Copper Washer (SS316) | PLG-M20

Seal large M20 x 1.5 threaded ports on industrial tanks, heavy equipment, and marine systems. The PLG-M20 stainless steel allen key plug with copper washer provides a secure, leak-free closure for M20 weld bungs, drain ports, and fabricated fittings. Commonly used in heavy equipment fluid systems, large agricultural machinery, industrial storage tanks, and marine fuel and water systems. Pairs directly with our WB-M20 weld bung. SS316 for maximum corrosion resistance.

M20 x 1.5 Stainless Steel 316 Slim Round Head Allen Key Slotted Plug with Copper Washer Stainless Steel 316 for corrosive environments, rigid and durable construction.

Building a weld bung installation? Complete the job with our matching stainless steel weld bungs — available in NPT, Metric, BSPP/G, and AN/JIC flare thread types. Browse our full WB series to find the right bung for your project.