Stainless Steel Countersunk Screws
Stainless steel countersunk screws are a construction part. The head is a 90-degree cone with a tool tightening slot in the head.
Countersunk head screws are screws that, when tightened, the head is not higher than the plane into which it is driven, enabling the surface to remain flat and beautiful.
These screws have different slots such as one slot, cross slot, plum blossom slot, etc., and the slots should be extended to the centre of the screws, so that chips can effectively avoid blocking the slots.
Depending on different roles and different tail ends, generally divided into stainless steel countersunk head machine screws and stainless steel countersunk head tapping screws
Different Driver for Stainless Steel Countersunk Screws
Socket Screws
Phillips Cross Screws
Phillips Cross Tapping Screws
Stainless Steel Countersunk Head Screws Installation Guide
SS 304 or SS316 countersunk head screws are mostly used in the need to install after the surface of the parts can not have a raised place, the fastening of the parts and there are two kinds of thick and thin, the so-called thick, that is to say, the thickness of the parts to be fastened is greater than the thickness of the head of the stainless steel countersunk head screws, stainless steel screws on the tightening of the screws, there is still a portion of the threads of the screws did not enter the threaded holes, in this case, the countersunk head screws can certainly be tightened.
There is usually a situation where the thickness of the part being fastened is less than the height of the head of the stainless steel countersunk head screws, which are commonly found in sheet metal parts in machinery and equipment, such as hinges of the chassis with the door and the box of the link; the sheet metal cover of the equipment with the linkage of the equipment and so on.
Due to the small thickness of the parts, the sheet metal parts being fastened, stainless steel screws through the hole completely into a conical hole, in this case, when the stainless steel countersunk head screws are tightened, the head of the screw is not a conical surface compression of the sheet metal parts, but the bottom of the root of the screw head and the top of the threaded hole squeezed to death, although it feels that the screws are tightened, but the sheet metal parts are jammed rather than pressed, in this case, although it feels that the screws tighten In this case, although the screw is felt to be tightened, the sheet metal part is really not tightened. This is a very common situation.
Countersunk head screw head vertebrae is 90 ยฐ cone angle, usually the top angle of the newly purchased drill 118 ยฐ – 120 ยฐ, some lack of training of workers do not know the angle difference, often directly with 120 ยฐ of the drill reaming, which results in the countersunk head screw tightening is not the head of the conical surface of the force, but the bottom of the screw head of a line of force, which is also known as countersunk screws can not be tightened for one of the reasons that it is not a problem of the quality of the screws.
Phillips Cross Screws DIN965 Size Chart
Hexagon Socket Cap Screws DIN7991 Size Chart
Tapping Screws DIN7982 Size Chart
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