Howmet Aerospace - Step Drill, Chamfered, for High Strength Studs

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Unit of Measure

Items	SDC328JC Step Drill, Chamfered, for High Strength Studs	SDC328JF Step Drill, Chamfered, for High Strength Studs	SDC390JC Step Drill, Chamfered, for High Strength Studs	SDC390JF Step Drill, Chamfered, for High Strength Studs	SDC453JC Step Drill, Chamfered, for High Strength Studs
Material Type	N/A High Speed Steel
Heat Treat	N/A Per Drill Manufacturer´s Standard
Finish	N/A Strippable Plastic Coat to Protect Cutting Edges (Tube Packaging Optional)
Size	N/A 328	N/A 328	N/A 390	N/A 390	N/A 453
A - Dia +.000 -.001	N/A 0.261 in	N/A 0.275 in	N/A 0.317 in	N/A 0.337 in	N/A 0.371 in
B - Dia (Ref.)	N/A 0.3266 - 0.3281 in	N/A 0.3266 - 0.3281 in	N/A 0.3891 - 0.3906 in	N/A 0.3891 - 0.3906 in	N/A 0.4516 - 0.4531 in
C ±.015	N/A 0.750 in	N/A 0.600 in	N/A 0.940 in	N/A 0.710 in	N/A 1.160 in
D	N/A 2.813-3.063 in	N/A 2.813-3.063 in	N/A 3.125-3.375 in	N/A 3.125-3.375 in	N/A 3.438-3.688 in
E - Dia ±.005	N/A 0.328 in	N/A 0.328 in	N/A 0.390 in	N/A 0.390 in	N/A 0.453 in