1/4-20 Hardware

1/4-20 hardware is commonly used in FRC for high-load applications where additional strength is needed. The larger diameter provides greater thread engagement and improved resistance to stripping.

What Does 1/4-20 Mean?

• 1/4 refers to the major diameter of the screw (0.250")
• 20 refers to the number of threads per inch (TPI)

This makes 1/4-20 a coarse-thread fastener that is durable and well-suited for structural applications.

Common Hardware

1/4-20 hardware includes:

• Socket head cap screws
• Button head screws
• Nylock nuts
• Washers
• Tapped holes in aluminum

Common Lengths

Typical lengths used in FRC include:

• 1/2"
• 3/4"
• 1"
• 1-1/4"
• 1-1/2"
• 2"

The correct length should allow full thread engagement without excessive exposed threads.

Typical Tools

• 3/16" hex key or T-handle
• 7/16" wrench or socket for nuts
• #7 drill bit for tap holes
• 17/64" drill bit for clearance holes

Why FRC Teams Use It

• Stronger than 10-32 hardware
• Better for high-load applications
• Less likely to strip in aluminum
• Common for structural and mounting applications

Key Idea

1/4-20 hardware is used when additional strength and durability are needed. Its larger size makes it ideal for high-load joints and structural connections.