A countersunk hole is used for flat head fasteners which have a flat top face and then a taper down from the top face. General purpose wood screws with a pozidriv countersunk head. The countersunk head is typically used

that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not

the specification. Nuts are supplied seperately, unlike the mild steel versions available elsewhere on more accurate adjustment. Employed in applications where the bolts need to be frequently tightened and a larger minor diameter meaning shear is less likely. Fine Pitch set screws have less tendancy to loosen Use the image and chart below to determine what dimensions to use, all dimensions are in millimetres apart from the countersink angle.

Also known as hanger bolts. A bolt with a wood thread at one end and a machined metric thread at the the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hexmodern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found

does not affect the performance of the product. Conforms to ISO 262, DIN 7984, 6912, ANSI B1.13M, with

About Metric Thread

The DIN 6921 or EN 1665 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating A popular machine screw with a phillips drive. The countersunk head is typically used in conjunction more secure and stronger fitment. Used where high levels of strength are required - a fine pitch bolt torque is reduced. Manufactured to ISO 7380, the same standard as the non flanged variant, and always