Hand and Power Tool Flashcards
how many strokes per minute should be used with a hacksaw
40 to 50
who can remove a lockout device or tag
worker who installed it, in an emergency, competent worker
Pipe and similar wrenches are adjusted by the use of a?
Thumbscrew
Two types of hacksaw blades are?
all-hard, flexible back
if the drill you are using has a powerful motor what must you do before using the drill?
be position and anchored to minimize risk of losing control of the drill
three rules of tool maintenance are
clean, oil, replace
7” grinding wheel in a bench grinder with a wheel speed of 3450 rmp will have an approximate surface travel speed of?
120 km per hour
what test should be preformed prior to installing new disc on a grinder
tap it with a screw driver, if it pings its good. If it clunks, its junks
cold chisels are tempered for approximately 20 mm (3/4”) from the?
cutting edge
hex keys are used to tighten and adjust?
set screws or cap screws
what should you do if you jam a set of snap cutters
turn adjust screw and untighten
when installing piping with pipe wrench you should always try to do what
pull towards you when possible
when your pipe wrench isnt gripping the pipe what do you do
clean pipe wrench teeth with a wire brush
under the safe procedures for grinding a chisel, you are told to
always grind on the face of the wheel and wear safety glasses at all times
why should you check the rpm rating of grinder disk
to ensure the disk has rpm rating higher than the grinder to prevent disks bursting
rules of thumb for pipe wrenches are _________ for NPS
3/4 and smaller 10” pipe wrench
1”-1 1/4” use 14” pipe wrench
1 1/2-2” use 18” pipe wrench
tin snips most likely found in your toolbox are?
aircraft type snips
portable hand drills are rated by
their chuck size
main parts of a drill
shank, body, the point
what wrench would you choose when installing a valve on a pipe project
hex wrenches, spud wrench, open end adjustable wrench
never use a screwdriver as a
chisel, punch, scraper or pry bar
what size screws can a red handled Robertson (#2) screwdriver be used for
8,9,10
what must you remeber when choosing to use a drop head die to thread pipe by hand or machine
each size of pipe has its own drop head
MJ torque wrench exerts a torque pressure of what on a 5/16 MJ clamp
60 inches-pound
what type of reamer is used by hand and power vice
spiral fluted for hand, blade and straight fluted for power vice
most commonly used screws in pipe trades are the ________ and the _________
ordinary slotted, Robertson screwdriver
the biggest advantage in using a multi-wheel pipe cutter is that it?
allows for the cutting of the pipe in tight corners where a 360 sweep of the cutter is not possible
portable pipe freezing equipment is designed to freeze?
stationary water only in selected sections of piping
how can you avoid spiraling when cutting pipe
make a light track all the way around before you tghten the cutting wheel
how many teeth would a hacksaw blade have to cut type M copper
32 theeth per inches
what is used to decide the size of a cold chissel
width of the cutting edge and the length of the tool used
the wide rollers found on a pipe cutter help prevent?
cutter wheel from spiraling
Reaming of pipe is a requirement of the
plumbing, gas and ASME piping codes
how is the rating of a hammer described
weight of the head with out the handle
Hex keys are available in what sizes?
Metric and Imperial
hook and tang on a measuring tape is lose for
inside measurments by allowing the hook or tang thickness
Pipe wrenches use________ to produce gripping action ?
pressure points/two points of contact
what pipe size will a 65-R thread
1/8-2” pipe
what oil should be used on your tools
machine/motor oil only, not cutting oil
most common weight of a claw hammer
16 oz
most pliers exert pressure on the grasping end through a version of what?
first-class lever
mushroom shaped chisel should be
grounded away to prevent flying splinters that pose a personal hazard
on a bench grinder the work rest should be within
1/16” of the wheel periphery with a maximum of 1/8” before adjusting
the point of the file is where handle is attached
T/F
False, point is the tip of the file end, tang is the part of the file that goes into the handle
files are classified by
length, size and cut
teeth of hacksaw blade face?
forward for forward push stroke
for general purpose work what is the proper cutting angle foer a cold chisel
25 dergrees
whetting angle for a wood chisel is
35* angle
what is a strap wrench used for
tighten polished and finishes with out draining
how is pipe measured
NPS
shear cutting may be accomplished on
mild steel up to 1/8” thick
soil pipe cutter s aree designed to?
cut cast iron pipe only
to drill a hole in a stainless steal countertop sink what 2 things should you remember
use a titanium drill alloy drill bit
drill at low speed
hole saws are used when the?
size of the hole to be drilled ia larger than the largest practical twist drill size
NPT stands for
National Pipe Thread
what three designs do pipe wrench come in
straight, offset, end
what sizes are pipe wrenches available in and made of
6”-60”
aluminum and steel
2 types of wrenches to use on finish fittings
hex wrench (good for six side objects) Spud wrench (grip flat sided objects)
adjustable wrenches are used to grip
odd size nuts and bolts
Chain wrenches are used on
polished or special finished surface
Uses nylon web for griping the surface, slips lots. Be careful
tube benders are used to
bend only one size of copper, stainless and aluminum tube
spring&lever (soft tube)
geared ratchet (hard tube)
