Machine Screw 8-32 x 1/4" p-ph-sems

Machine screw 8-32 X 1/4 inch philips pan head with SEMS lock
washer. (SEMS is a fastener industry term that refers to a screw
or bolt which has a external tooth captive washer.)

Used to secure 535-5203-01 bracket in Auto Ball Launch assembly
(500-5969-00-33) for Sega games.

Reference:

• 4008-01003-04
  
• Replaces 232-5300-00
• Replaces 232-5300-04
• Substitute for 236-1104-04
  
• SC00101-02
  

Fastener part numbering system explained:

The last 2 digits (XX) of the 4 digit fastener
part number prefix
(40XX-12345-12) indicates the standard stud size
of the bolt or screw. For example, part 4006-01030-12 indicates a
#6 stud diameter (.138") fastener.

The 2 digit part number suffix for bolts and
screws (-12, -04, -16, etc) indicates the number of 1/16 inch
length increments of the fastener. For example, part
4004-01003-04 indicates a screw that is 4/16 inch long or 1/4
inch long.

The middle 5 digits describe the fastener head
style or other features.

Basic diameters and threads of Standard SAE
(Society of American Engineers) numeric system small machine
screws are shown below.

The diameters of machine screws are indicated with the number of
threads per inch. Here is a list of common sizes in inches:

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

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

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

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

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

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

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

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