Threaded Plug Gauges with Calibration Certificate
These gauges come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They allow you to inspect internal threads on parts. All have a go gauge on one end and a no-go gauge on the other end. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.
Inch
Thread Size | Thread Type | Pitch Dia. Tolerance | Hardness | Material | Each | |
Class 2B | ||||||
|---|---|---|---|---|---|---|
Class X | ||||||
| 0-80 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 0000000 |
| 1-64 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1-72 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 2-56 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 2-64 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3-48 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 4-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 4-48 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 6-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 6-40 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 8-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 8-36 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 10-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 10-32 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 12-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 12-28 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/4"-20 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/4"-28 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/16"-18 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/16"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/8"-16 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/8"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/16"-14 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/16"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/2"-13 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/2"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 9/16"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/8"-11 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/8"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/4"-10 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/4"-16 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/8"-9 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/8"-14 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1"-8 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/8"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/4"-7 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/4"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/2"-6 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/2"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
Class 3B | ||||||
Class X | ||||||
| 0-80 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1-64 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1-72 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 2-56 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 2-64 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3-48 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 4-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 4-48 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 6-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 6-40 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 8-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 8-36 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 10-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 10-32 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 12-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 12-28 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/4"-20 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/4"-28 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/16"-18 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/16"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/8"-16 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/8"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/16"-14 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/16"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/2"-13 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1/2"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 9/16"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/8"-11 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 5/8"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/4"-10 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 3/4"-16 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/8"-9 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 7/8"-14 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1"-8 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/8"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/4"-7 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/4"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/2"-6 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| 1 1/2"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
Metric
Class 6H | ||||||
|---|---|---|---|---|---|---|
| Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | Each | |
Class X | ||||||
| M1.6 | 0.35mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 0000000 |
| M2 | 0.4mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M3 | 0.5mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M3.5 | 0.6mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M4 | 0.7mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M5 | 0.8mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M6 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M7 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M8 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M8 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M10 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M10 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M12 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M12 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M12 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M12 | 1.75mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M14 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M16 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M16 | 2mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
| M18 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 |
Threaded Plug Gauges
These have a go gauge on one end and a no-go gauge on the other end. They allow you to inspect internal threads on parts. A taperlock handle lets you quickly replace worn gauges.
Check the minimum internal thread size with the go gauge end, and check the maximum internal thread size with the no-go gauge end. A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns.
Threads have different classes of fit. Thread fit designates the tightness or looseness of mating threads. For example, inch threads with a 3B fit have tighter tolerances than threads with a 2B fit.
For technical drawings and 3-D models, click on a part number.
Inch
| Thread Size | Thread Type | Pitch Dia. Tolerance | Hardness | Material | Choose a For Thread Fit | Each | |
Class X | |||||||
|---|---|---|---|---|---|---|---|
| 0-80 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 0000000 | |
| 1-72 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 2-56 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 3-48 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 4-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 4-48 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 5-40 | UNC | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 6-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 6-40 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 8-32 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 8-36 | UNF | -0.0002" to 0.0002" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 10-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 10-32 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 12-24 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1/4"-20 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 1/4"-28 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 5/16"-18 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 5/16"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 3/8"-16 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 3/8"-24 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 7/16"-14 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 7/16"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 00000 | |
| 1/2"-13 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1/2"-20 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 9/16"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 5/8"-11 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 5/8"-18 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 3/4"-10 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 3/4"-16 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 7/8"-9 | UNC | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 7/8"-14 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1"-8 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1 1/8"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1 1/4"-7 | UNC | -0.0004" to 0.0004" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
| 1 1/4"-12 | UNF | -0.0003" to 0.0003" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 000000 | |
Metric
| Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | For Thread Fit | Each | |
Class X | |||||||
|---|---|---|---|---|---|---|---|
| M1.6 | 0.35mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 0000000 |
| M2 | 0.4mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M3 | 0.5mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M3.5 | 0.6mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M4 | 0.7mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M5 | 0.8mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M6 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M8 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M8 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M10 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M10 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M12 | 1mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M12 | 1.25mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M12 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M12 | 1.75mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M14 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M16 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M16 | 2mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
| M18 | 1.5mm | -0.008" to 0.008" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 000000 |
Stepped Pipe Flange Aligner Pins
Each step on these aligner pins matches common bolt holes on pipe flanges, so they're more precise than conical aligner pins and don’t require nuts. Press the pair of pins into mated flanges to make sure the flanges are aligned. Once two sets of holes are aligned, you'll know the rest of the holes are as well. Made of durable chrome-plated steel, they'll hold their shape over time and resist rust.