#12-24 Machine Screws

#12-24 Machine Screws in all available lengths, grades, materials, and finishes. This collection covers every #12-24 option in stock — use the filters to narrow by length, grade, material, and finish.

#12-24 Thread Specifications

• Nominal diameter: 0.216"
• Threads per inch: 24
• Tap drill (75% thread): #16 (0.177")
• Clearance hole (close fit): #2 (0.221")
• Clearance hole (free fit): 1/4" (0.250")

To thread a #12-24 hole, drill with a #16 (0.177") tap drill for a standard 75% thread. For a clearance hole that the #12-24 screw passes through, use #2 (0.221") for a close fit or 1/4" (0.250") for a free fit. Pair with a matching #12-24 nut or tapped hole.

Orders before 12 PM ET ship same day.