M4 Phillips Slotted Combo Partial Thread Sealing Screw 1081211211

Partial thread screw is one of the non-standard screws, the general tail thread and no thread near the head. When the screw enters the preset hole, the chip scraped out by the tail thread can be discharged better, and less effort.When producing long screw, full screw is more expensive than partial thread screw, this price difference still can increase with screw length and more obvious. Sealing screw, commonly used in electricity meter, water meter, gas meter and tanker, etc. Phillips slotted Combo: Use either a Phillips screwdriver or a flat-head screwdriver. Flat-head screwdriver and Phillips screwdriver are common household tools for ordinary people. So the use of Phillips slotted combo screws is more convenient.