Machine Screw 4-40 x 1/4" button head

4-40 x 1/4" long phillips button head machine screw

Used on:

• CHAMPION PUB
• CIRQUS VOLTAIRE
• JOHNNY MNEMONIC
• MONSTER BASH
• NBA FASTBREAK
• REVENGE FROM MARS

Basic diameters and threads of Standard SAE numeric system small machine screws are shown below.

The diameters of machine screws are indicated with the number of threads per inch count.

Here is a list of common sizes in inches:

• 2-56: 0.0860" or 43/500" diameter; 56 threads per inch
• 4-40: 0.1120" or 14/125" diameter; 40 threads per inch
• 5-40: 0.1250" or 1/8" diameter; 40 threads per inch
• 6-32: 0.1380" or 69/500" diameter; 32 threads per inch
• 8-32: 0.1640" or 41/250" diameter; 32 threads per inch
• 10-24: 0.1900" or 19/100" diameter; 24 threads per inch
• 10-32: 0.1900" or 19/100" diameter; 32 threads per inch
• 12-24: 0.2160" or 27/125" diameter; 24 threads per inch