5/16"-18 x 1-1/8" Hex Cap Screw Fully Threaded Coarse Grade 8 Alloy Steel, 1200 pcs/Pack Package:1200 They provide precise positioning and

They provide precise positioning and prevent movement between parts

Countersunk serrated lock washers feature a unique design that provides a secure grip and prevents loosening under vibration

These general-use flat washers are placed under the head of a bolt or nut to create a smooth bearing surface and distribute the load over a wider area

Length: 5-1/4

Length: 11

5/16"-18 x 1-1/8" Hex Cap Screw Fully Threaded Coarse Grade 8 Alloy Steel, 1200 pcs/Pack Package:1200 They provide precise positioning andHigh quality Hex Cap Screw, perfect for various applications. Grade: Grade 8 Material: Alloy Steel Head Style: Hex Drive: External Hex Thread Size: 5 16 18 Length: 1 1 8