Professional Locksmithing Exam Study Questions
with Complete Solutions
if there is no key inserted into the lock, what blocks the shearline? - ANSWER the top
pins
if the wrong key is inserted into the lock, what blocks the shearline? - ANSWER the
bottom pins
what is a paracentric key - ANSWER a security feature in which one or more of the side
wards protrudes past the vertical centerline of the keyway
what is the most popular tubular key? - ANSWER 1137B
what is a neuter bow - ANSWER the head of the key has changed but the shaft is the
same
what is multiplexing - ANSWER specially milled key blank that will fit more than one
keyway of the same manufacture
what does TFC stand for - ANSWER to first cut
what does BCC stand for - ANSWER between cut center
what does MACS stand for - ANSWER maximum adjacent cut specification
what does EPD stand for - ANSWER effective plug diameter
, what is a dead latch on a lock used for - ANSWER a security feature
what are the three parts to a working key? - ANSWER the correct blank, correct spacing,
and correct depth
what is a keyed alike - ANSWER two keys that are keyed the same way
what is a keyed different - ANSWER two keys that are keyed differently
what are the three components that make up a good duplication machine - ANSWER
pair of vices, cutting wheel, and tracer
can you use a 6 pin key on a 5 pin lock? - ANSWER Yes, just snip the head
how do you position your plug when you remove it from the shell? - ANSWER turn it 90
degrees
what makes a good dead bolt? - ANSWER 1 inch throat
true/false - fire rated hardware cannot have the ability to be dogged down - ANSWER
true
what function does fire rated hardware need? - ANSWER positive latching
what does a mortise mean? - ANSWER pocketed
with Complete Solutions
if there is no key inserted into the lock, what blocks the shearline? - ANSWER the top
pins
if the wrong key is inserted into the lock, what blocks the shearline? - ANSWER the
bottom pins
what is a paracentric key - ANSWER a security feature in which one or more of the side
wards protrudes past the vertical centerline of the keyway
what is the most popular tubular key? - ANSWER 1137B
what is a neuter bow - ANSWER the head of the key has changed but the shaft is the
same
what is multiplexing - ANSWER specially milled key blank that will fit more than one
keyway of the same manufacture
what does TFC stand for - ANSWER to first cut
what does BCC stand for - ANSWER between cut center
what does MACS stand for - ANSWER maximum adjacent cut specification
what does EPD stand for - ANSWER effective plug diameter
, what is a dead latch on a lock used for - ANSWER a security feature
what are the three parts to a working key? - ANSWER the correct blank, correct spacing,
and correct depth
what is a keyed alike - ANSWER two keys that are keyed the same way
what is a keyed different - ANSWER two keys that are keyed differently
what are the three components that make up a good duplication machine - ANSWER
pair of vices, cutting wheel, and tracer
can you use a 6 pin key on a 5 pin lock? - ANSWER Yes, just snip the head
how do you position your plug when you remove it from the shell? - ANSWER turn it 90
degrees
what makes a good dead bolt? - ANSWER 1 inch throat
true/false - fire rated hardware cannot have the ability to be dogged down - ANSWER
true
what function does fire rated hardware need? - ANSWER positive latching
what does a mortise mean? - ANSWER pocketed
