- n.a pin with a uniform smaller diameter except at its ends. Typically a top pin used to augment pick resistance but also observed as bottom and master pins.
Locksmith dictionary . 2014.
Look at other dictionaries:
spool pin — noun : a spool shaped pin tumbler used in some cylinder locks to foil picking attempts … Useful english dictionary
spool — I. noun Etymology: Middle English spole, from Middle Dutch spoele; akin to Old High German spuola spool Date: 14th century 1. a cylindrical device which has a rim or ridge at each end and an axial hole for a pin or spindle and on which material… … New Collegiate Dictionary
dumbbell pin — n. a spool pin with serrations at the larger diameter ends … Locksmith dictionary
mushroom pin — noun : spool pin … Useful english dictionary
step pin — n. a spool or mushroom pin which has had a portion of its end machined to a smaller diameter than the opposite end. It is typically used as a top pin to improve pick resistance by some manufacturers of high security cylinders … Locksmith dictionary
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