The slotted spring pin (aka: roll pin) is made by
forming a sheet of steel into a cylinder which is actually larger
than the diameter of the hole it will be driven into. The pin
is heat treated for toughness, resilience and shear strength.
Spring pins are much stronger than steel straight pins, taper
pins or grooved pins of equal size.
The special pin design with the engineered slot
width and chamfer on each end, are the unique reasons these pins
lock into place. As the pin is driven into the hole, it springs
open forcing a continuous pressure against all sides thereby preventing
Slotted spring pins are available in 1075-1095 carbon
steel and 420 magnetic stainless steel from stock. Beryllium copper
for anti-magnetic and electrical applications or non-magnetic
corrosion resistant 302 stainless steel are available on special
request. Roll pins can withstand up to 500 ° F when made of
carbon steel and up to 700 ° F when made of either 420 stainless
or beryllium copper. They are available with plain, oiled, zinc,
cadmium, phosphate or passivated finishes. Spring pins are lightweight,
maintenance free, cost efficient and can save your company money
by saving time on your assembly line.