1 1/8"-7 Flat Head Cap Screws

1-1/8-7 Flat Head Socket Cap Screws in all available lengths, grades, materials, and finishes. This collection covers every 1-1/8-7 option in stock — use the filters to narrow by length, grade, material, and finish.

1-1/8-7 Thread Specifications

• Nominal diameter: 1.125"
• Threads per inch: 7
• Tap drill (75% thread): 63/64" (0.984")
• Clearance hole (close fit): 1-5/32" (1.156")
• Clearance hole (free fit): 1-3/16" (1.188")

To thread a 1-1/8-7 hole, drill with a 63/64" (0.984") tap drill for a standard 75% thread. For a clearance hole that the 1-1/8-7 screw passes through, use 1-5/32" (1.156") for a close fit or 1-3/16" (1.188") for a free fit. Pair with a matching 1-1/8-7 nut or tapped hole.

Orders before 12 PM ET ship same day.