Standard type Fusible Plugs. Our Fusible plugs are made from bronze and solid filled with lead to standard specifications. All thread sizes are BSPT
Thread lengths are as follows
1/4" has 3/8" Thread Length
3/8" has 1/2" Thread Length
1/2" has 3/4" Thread Length
3/4" has 1" Thread Length
1" had 1" Thread Length