Howmet Aerospace - RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications

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Items	RCDC16-136 RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications	RCDC16-136S RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications	RCDC16-149 RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications	RCDC16-159 RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications	RCDC18-149 RCDC Series Tooling - Chamfered Step Drills for Aluminum Applications
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 16	N/A 16	N/A 16	N/A 16	N/A 18
A - Dia	N/A 0.1353-0.1360 in	N/A 0.1353-0.1360 in	N/A 0.1483-0.1490 in	N/A 0.1583-0.1590 in	N/A 0.1483-0.1490 in
B - Dia	N/A 0.2570-0.2500 in	N/A 0.2493-0.2500 in	N/A 0.2493-0.2500 in	N/A 0.2493-0.2500 in	N/A 0.2800-0.2810 in
C ±.0050	N/A 0.312 in	N/A 0.274 in	N/A 0.312 in	N/A 0.312 in	N/A 0.375 in
D ±.2500	N/A 4.000 in	N/A 4.000 in	N/A 4.000 in	N/A 4.000 in	N/A 4.250 in
Notes	N/A <2> Conical point optional. Made from standard straight shank jobbers or screw machine twist drills. <6> Configuration applicable only for part number RCDC72-875 thru RCDC124-1789. Dimensions and tolerances not shown are per ANSI B94.11M. Caution: Step drills are designed for thru hole drilling. When used to drill a blind hole, it may be necessary to grind the drill to suit the depth required.