Machine Screw 4-40 x 5/16" p-ph-s

Machine screw with 4-40 thread and 5/16" long with phillips pan head and integrated external tooth lockwasher.

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 countl. Here is a list of common sizes in inches:

2-56: 0.0860" or 43/500" in diameter; 56 threads per inch

4-40: 0.1120" or 14/125" in diameter; 40 threads per inch

5-40: 0.1250" or 1/8" in diameter; 40 threads per inch

6-32: 0.1380" or 69/500" in diameter; 32 threads per inch

8-32: 0.1640" or 41/250" in diameter; 32 threads per inch

10-32: 0.1900" or 19/100" in diameter; 32 threads per inch

10-24: 0.1900" or 19/100" in diameter; 24 threads per inch

12-24: 0.2160" or 27/125" in diameter; 24 threads per inch

Weight: 0.3 oz