Roll Pin Drill Sizes

Passivated pins offer added protection against corrosion and oxidation.

Roll pin drill sizes.

Recommended b m pintool a b c recommended hole size wall thickness. Nominal pin dia decimal nominal pin dia fraction max go ring gage d max nom min max. Fraction of an inch inch mm fraction of an inch inch mm fraction of an inch inch mm 1 64 0 0156 0 3969 23 64 0 3594 9 1281 45 64 0 7031 17 8594 1 32 0 0313 0 7938 3 8 0 37 50 9 5250 23 32 0 7188 18 2563. Designed to replace taper pins straight pins and set screws they will also serve as a rivet dowel hinge pin or cotter pin in many applications.

The relationship between the diameter of the pin and the diameter of the hole must take into account the ductility of the dowel and the hole material and will vary more accordingly to this factor than according to the size of the dowel itself. 18 8 stainless steel pins offer a balance of strength and corrosion resistance. Bs 328 drill sizes are defined as shown in the drill size chart below. Pins that meet specifications for iso 8752 formerly din 1481 or iso 13337 formerly din 7346 adhere to international standards for pin dimensions.

A 1 8 roll pin will fit tightly in a 1 8 hole. Spring roll pins these pins feature hollow cylinders slit longitudinally permitting compression during insertion. In stock and ready to ship. There are a variety of standards used to define drill sizes the most common one in the uk is the british standard bs 328 set which includes twist drill bit sizes between 0 2 mm and 25 mm.

Steel pins are strong and wear resistant. Roll pins are sized by the diameter of the required hole i e. The drill size chart below gives fractional sizes and their metric conversions up to 1 inch. In hardened steel parts the hole should be 005 to 008mm 5 8 microns smaller than the dowel.