When a Phillips is not a Phillips Plus So Much More!

Step 17 Clutch Drive Type G

[[br]]See also Clutch Head Type A. Sometimes referred to as the butterfly shape, it is the older than Type A. Found in some trailer trucks and mobile homes. Type G Bits are recommended for: Maintenance work or applications requiring frequent removal. Applications that do not require friction hold.

Clutch head screws were popular in mobile home construction and electric motors. Chevy and GMC trucks manufactured in the 1940's, 50's and 60's and some Corvettes had these. Frequently, the bed of these trucks used the larger 5/16" clutch head screws and the cab, dash, doors and striker plates used 5/32" to 5/16". A worn tip on a driver can easily be restored by grinding the end. The size is the diameter in inches of the bit point. 1/8", 5/32", 3/16", 1/4", 5/16"

Clutch Head were also used on older tractors to fasten the grills and sheet metal parts to the tractor, The earlier ones had a round head and there was really no way to remove them except with the special driver. Use of a regular standard screwdriver on these screws will often result in a stripped screw head. They were used in mass production drivers because it is much easier and faster to install them with a power driver than it would be if they used regular bolts. [[br]]