Less vibration

2-4 1/2 Grade 2 Finished Hex Nut Zinc Plated

10 x 3 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - 1 lbs Pack (68)

6-20 x 1 1/2 Phillips Pan Face Framing Screw T17 Black Oxide - Carton (7

8 x 1 1/4 Square Flat Particle Board Screw w/ Nibs T17 Zinc Plated - Carton (8

1/2-13 x 4 1/2 Socket Set Screw Cup Point Alloy Phillips Bugle Hi-Low Drywall Screws Black Phosphate Less vibration1 2 13 x 4 1 2 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.