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A Thread Plug “GO” gage checks the minimum major diameter and the minimum pitch diameter
size in a part, the “NOGO” checks for the hole not to exceed the maximum pitch diameter size in a
part. All GSG Thread Plug Gages are manufactured to ASME/ANSI B1.2 or B1.16M. All gages
are made of oil hardened Tool Steel.
TAPERLOCK THREAD PLUGS
REVERSIBLE THREAD PLUGS
TRILOCK THREAD PLUGS
•
Reversible
style thread work plug gages are avail-
able up to and including ¾” (19.05mm).
•
Gages can be reversed end for end in the handle
resulting in double the wear life.
•
Each end of the handle is color coded, green for
Go and red for Nogo.
•
Chip Grooves are provided on both ends of the Go
work plug member #10/M4 and Larger.
T
HREAD
P
LUG
G
AGES
TAPERLOCK SET PLUG
HELICAL COIL PLUG GAGES (STI)
•
Helical Coil plug gages are used to inspect the hole
prior to inserting a screw thread insert when repairing a
HOLE LOCATION PLUGS
LEAD LOCK
FLEX PLUG
•
Trilock
style Thread Work Plugs are available for ¾” (19.05mm)
and larger.
•
Gage can be reversed on the handle resulting in a longer wear
life.
•
Shown is a single end on a handle which reduces weight with
large sizes.
•
Taperlock style Thread Work Plug gages are available
up to and including 1 ½” (38.1mm)
•
Taperlocks are the most popular style in thread plug
gaging
.
•
Shown is a Go and Nogo Truncated (Master) Set Plug.
•
Set Plugs are used to set thread rings for proper fit and
feel and inspect ring for wear.
•
Set Plugs have a common pitch diameter the full thread
length of the Go or Nogo section. The crest of the thread
is truncated for the first half of the set plug and “full form”
the remaining length.
Fixed
Off lead Motion
•
GSG Manufactures hole location gages in two types. When
checking the location of a small tapped hole the flex plug is
used.
•
When inspecting a larger hole (generally over 1.00” ) then
the lead lock is used. Both gages locate on the flank angles
of the tapped hole.
•
Lead locks can be used in conjunction with the zero spindle
and are a perfect way to inspect features for run-out to the
pitch diameter of the thread.
•
Special designs are available such as true position of
threads to bore diameters with dial or digital indicators