#8-32 Button Head Cap Screws

#8-32 Button Head Socket Cap Screws in all available lengths, grades, materials, and finishes. This collection covers every #8-32 option in stock — use the filters to narrow by length, grade, material, and finish.

#8-32 Thread Specifications

• Nominal diameter: 0.164"
• Threads per inch: 32
• Tap drill (75% thread): #29 (0.136")
• Clearance hole (close fit): #16 (0.177")
• Clearance hole (free fit): #13 (0.185")

To thread a #8-32 hole, drill with a #29 (0.136") tap drill for a standard 75% thread. For a clearance hole that the #8-32 screw passes through, use #16 (0.177") for a close fit or #13 (0.185") for a free fit. Pair with a matching #8-32 nut or tapped hole.

Orders before 12 PM ET ship same day.