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