Operating Screw For Pratt Burnerd 12in Acme Thread Chucks

Pratt Burnerd Operating Screw 2550-31365 For 12in Type 55 Acme Thread Chucks

A : 1.1/8in

B : 4.13/32in

C : 1.5/32in

D : 13/16in

E : 9/16in

Thread : 5 TPI (Acme)

Please note if the end of the screw has burst open this may be due to a worn chuck key.

Part Number 2550-31365