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Machine Screw 4-40 x 5/16 inch p-ph-s black
CALIFORNIA WARNING
This product can expose you to chemicals, including lead and DEHP, which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to https://www.p65warnings.ca.gov.
4-40 x 5/16" phillips pan head machine screw with integrated external tooth lock washer and black oxide finish.
Reference:
4004-01155-05B
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 No.4006-01030-12 indicates a No.6 stud diameter (.138") fastener.
The middle 5 digits describe the fastener head style or other features.
The 2 digit part number suffix for bolts and screws (-12, -04, -16, etc) indicates the number of 1/16" length increments of the fastener. For example, part No.4004-01003-04 indicates a screw that is 4/16" long or 1/4" long.
Basic diameters and threads of Standard
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" 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
10-32: 0.1900" or 19/100" diameter; 32 threads per inch
10-24: 0.1900" or 19/100" diameter; 24 threads per inch
12-24: 0.2160" or 27/125" diameter; 24 threads per inch
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