5/8"-11 Hex Cap Screws

5/8-11 Hex Cap Screws in all available lengths, grades, materials, and finishes.

5/8-11 Thread Specifications

• Nominal diameter: 0.625"
• Threads per inch: 11
• Tap drill (75% thread): 17/32" (0.531")
• Clearance hole (close fit): 41/64" (0.641")
• Clearance hole (free fit): 21/32" (0.656")

To thread a 5/8-11 hole, drill with a 17/32" (0.531") tap drill for a standard 75% thread. For a clearance hole that the 5/8-11 screw passes through, use 41/64" (0.641") for a close fit or 21/32" (0.656") for a free fit. Pair with a matching 5/8-11 nut or tapped hole.