Pratt Burnerd Operating Screw 2550-26365 For 10in Type 55 Acme Thread Chucks
A : 1in
B : 3.25/32in
C : 15/16in
D : 21/32in
E : 1/2in
Thread : 6 TPI (Acme)
Part Number 2550-26365
Please note if the end of the screw has burst open this may be due to a worn chuck key.