S.T.I. Thread Plug Gages

Helical coil ( STI ) Plug Gages are used to gage threaded holes prior to insertion of screw thread inserts. Screw thread inserts are used to repair a damaged thread or to provide stronger thread assembly. All Helical Coil ‐ STI thread plug gages are manufactured of oil hardened tool steel to a class X tolerance. Class W tolerance thread plug gages priced on request.

SKU Description Size Go Length NoGo Length Pitch Diameter Each
STI-#2-56-2B-GO #2-56 UNC 2B STI Go Plug-Class X #25/167/32.0976"
$58.00
STI-#2-56-2B-NGO #2-56 UNC 2B STI NoGo Plug-Class X #25/167/32.0996"
$58.00
STI-#2-56-2B-D/E #2-56 UNC 2B STI Go/NoGo Thread Plug Gage w/handle-Class X #25/167/32.0976" - .0996"
$129.00
STI-#2-56-3B-GO #2-56 UNC 3B STI Go Plug-Class X #25/167/32.0976"
$58.00
STI-#2-56-3B-NGO #2-56 UNC 3B STI NoGo Plug-Class X #25/167/32.0989"
$58.00
STI-#2-56-3B-D/E #2-56 UNC 3B STI Go/NoGo Thread Plug Gage w/handle-Class X #25/167/32.0976" - .0989"
$129.00
STI-#3-48-2B-GO #3-48 UNC 2B STI Go Plug-Class X #35/167/32.1126"
$56.00
STI-#3-48-2B-NGO #3-48 UNC 2B STI NoGo Plug-Class X #35/167/32.1148"
$56.00
STI-#3-48-2B-D/E #3-48 UNC 2B STI Go/NoGo Thread Plug Gage w/handle-Class X #35/167/32.1126" - .1148"
$124.00
STI-#3-48-3B-GO #3-48 UNC 3B STI Go Plug-Class X #35/167/32.1126"
$56.00
STI-#3-48-3B-NGO #3-48 UNC 3B STI NoGo Plug-Class X #35/167/32.1140"
$56.00
STI-#3-48-3B-D/E #3-48 UNC 3B STI Go/NoGo Thread Plug Gage w/handle-Class X #35/167/32.1126" - .1140"
$124.00
STI-#3-56-2B-GO #3-56 UNF 2B STI Go Plug-Class X #35/167/32.1106"
$55.00
STI-#3-56-2B-NGO #3-56 UNF 2B STI NoGo Plug-Class X #35/167/32.1226"
$55.00
STI-#3-56-2B-D/E #3-56 UNF 2B STI Go/NoGo Thread Plug Gage w/handle-Class X #35/167/32.1106" - .1226"
$122.00
STI-#3-56-3B-GO #3-56 UNF 3B STI Go Plug-Class X #35/167/32.1106"
$55.00
STI-#3-56-3B-NGO #3-56 UNF 3B STI NoGo Plug-Class X #35/167/32.1119"
$55.00
STI-#3-56-3B-D/E #3-56 UNF 3B STI Go/NoGo Thread Plug Gage w/handle-Class X #35/167/32.1106" - .1119"
$122.00
STI-#4-40-2B-GO #4-40 UNC 2B STI Go Plug-Class X #45/167/32.1283"
$49.00
STI-#4-40-2B-NGO #4-40 UNC 2B STI NoGo Plug-Class X #45/167/32.1308"
$49.00
STI-#4-40-2B-D/E #4-40 UNC 2B STI Go/NoGo Thread Plug Gage w/handle-Class X #45/167/32.1283" - .1308"
$110.00
STI-#4-40-3B-GO #4-40 UNC 3B STI Go Plug-Class X #45/167/32.1283"
$49.00
STI-#4-40-3B-NGO #4-40 UNC 3B STI NoGo Plug-Class X #45/167/32.1299"
$49.00
STI-#4-40-3B-D/E #4-40 UNC 3B STI Go/NoGo Thread Plug Gage w/handle-Class X #45/167/32.1283" - .1299"
$110.00
STI-#4-48-2B-GO #4-48 UNF 2B STI Go Plug-Class X #45/167/32.1256"
$49.00
STI-#4-48-2B-NGO #4-48 UNF 2B STI NoGo Plug-Class X #45/167/32.1279"
$49.00
STI-#4-48-2B-D/E #4-48 UNF 2B STI Go/NoGo Thread Plug Gage w/handle-Class X #4487/32.1256"-.1279"
$110.00
STI-#4-48-3B-GO #4-48 UNF 3B STI Go Plug-Class X #45/167/32.1256"
$49.00
STI-#4-48-3B-NGO #4-48 UNF 3B STI NoGo Plug-Class X #45/167/32.1271"
$49.00
STI-#4-48-3B-D/E #4-48 UNF 3B STI Go/NoGo Thread Plug Gage w/handle-Class X #45/167/32.1256" - .1271"
$110.00
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