9/16"-12 Hex Cap Screws

9/16-12 Hex Cap Screws in all available lengths, grades, materials, and finishes. This collection covers every 9/16-12 option in stock — use the filters to narrow by length, grade, material, and finish.

9/16-12 Thread Specifications

• Nominal diameter: 0.5625"
• Threads per inch: 12
• Tap drill (75% thread): 31/64" (0.484")
• Clearance hole (close fit): 37/64" (0.578")
• Clearance hole (free fit): 19/32" (0.594")

To thread a 9/16-12 hole, drill with a 31/64" (0.484") tap drill for a standard 75% thread. For a clearance hole that the 9/16-12 screw passes through, use 37/64" (0.578") for a close fit or 19/32" (0.594") for a free fit. Pair with a matching 9/16-12 nut or tapped hole.

Orders before 12 PM ET ship same day.