#17 High Speed Aircraft Bit

7/8 x 18 ITM SDS Plus Hammer Drill Bit

5/8 x 4 1/2 Hex Lag Screw 18-8 SS

#1 Heavy Duty Drill Bit - Stubby Length

7/16 Hex Key Short Arm Alloy

1/2-13 x 5 Socket Set Screw Cup Point Alloy 3/4-10 Socket Cap Screws Alloy #17 High Speed Aircraft Bit1 2 13 x 5 Socket Set Screw Cup Point Alloy . A headless screw threaded the entire length. It has a hexagonal drive at one end and a cup shaped indentation at the other end. The cup point is the most used style set screw. Designed for fast, permanent and semi permanent location of parts on shafts with hardness differential of 10 15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable. Hardness: Rockwell C45 53.