The advantage is that little or no part of the head protrudes above the surface of the material. Unless the material is very soft, flat and oval heads require a countersunk hole. Sometimes features are combined, as in the case of slotted hex, hex washer, slotted hex washer, and round washer head designs.Ĭountersunk designs consist primarily of flat, oval, and bugle heads. This style includes binding, button, cheese, fillister, flange, hex, pan, round, socket, and low socket, square, and truss heads (binding head is sometimes referred to as binder head). Non-countersunk heads – where the head is completely exposed comprise the widest variety. There are two basic designs: countersunk and non-countersunk. The drive recess or style is ultimately based on the tool you use during installation. Your chosen head shape or style can either serve a functional or decorative purpose. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.The two basic types of screw heads, countersunk and non-countersunk, include various unique designs. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Continue without accepting’ or ‘Customise Cookies’ to decline these cookies, make more detailed choices or learn more. Third parties use cookies for the purposes of displaying and measuring personalised advertisements, generating audience insights, and developing and improving products. This includes using first- and third-party cookies which store or access standard device information such as a unique identifier. If you agree, we will also use cookies to complement your shopping experience across Amazon stores as described in our Cookie Notice.
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