Seat screw with cross hole and washer.
Screw with cross hole and embedded seat.
This is a screw that incorporates a washer used to prevent loosening and to avoid the sinking of the seat surface. The screw threads are rolled with the washer in place, ensuring that the washer does not detach from the screw. This eliminates the hassle of inserting the washer, prevents it from falling out, and helps improve work efficiency. The head has a flat top and a conical seat shape. When measuring length, the length of a pan head screw is measured from the top surface, while other screws measure from the neck down, making it appear shorter. It is used when you want the head to be flush with the component without any protrusion. The component must be pre-machined with a conical recess to match the seat surface. If this machining is insufficient, the head will not be flush. It is commonly used for the installation of building fixtures, with hinge fastening being a typical example.
- Company：サカエ製鋲所
- Price：Other
