55620 Carbide Tipped 82 Degree Countersink 

Taper #4 Screw 3/8 Dia x 5/64 Drill Dia x 1/4 Hex Shank

a°) Angle	41°
(D) Diameter	3/8
(d) Shank	1/4
Overall Length (L)	2-1/8
Wood Screw Size	#4
D1	5/64
Replacement Drill	630-260