About Threaded Studs and Rods
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Steel Press-Fit Studs
These steel studs are zinc plated to resist corrosion in wet environments. Press them into a drilled or punched hole with an arbor press or similar pressure tool. Also known as self-clinching studs, ribs under the head hold the stud firmly in place. Length listed is overall length.
For technical drawings and 3-D models, click on a part number.
| Lg., mm | Thread Pitch, mm  | PEM® Part Number | Thread Lg., mm | Drill Bit Size | For Min. Material Thick., mm | For Min. Lg. Between Hole Center and Sheet Edge, mm | For Hole Dia., mm | Hole Size Tolerance, mm | Base Dia., mm | Tensile Strength | Hardness | Pkg. Qty. | Pkg. | |
Metric Zinc-Plated Steel | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
M2.5 | ||||||||||||||
| 6 | 0.45 | FH-M2.5-6 | 4 | No. 40 | 1.000 | 5.5 | 2.5 | 0.000 to 0.08 | 4.5 | Not Rated | Not Rated | 50 | 000000000 | 000000 |
| 10 | 0.45 | FH-M2.5-10 | 8 | No. 40 | 1.000 | 5.5 | 2.5 | 0.000 to 0.08 | 4.5 | Not Rated | Not Rated | 50 | 000000000 | 00000 |
| 15 | 0.45 | FH-M2.5-15 | 13 | No. 40 | 1.000 | 5.5 | 2.5 | 0.000 to 0.08 | 4.5 | Not Rated | Not Rated | 50 | 000000000 | 00000 |
| 18 | 0.45 | FH-M2.5-18 | 16 | No. 40 | 1.000 | 5.5 | 2.5 | 0.000 to 0.08 | 4.5 | Not Rated | Not Rated | 25 | 000000000 | 00000 |
Stainless Steel Press-Fit Studs
18-8 stainless steel studs have good chemical resistance and may be mildly magnetic. Press them into a drilled or punched hole with an arbor press or similar pressure tool. Also known as self-clinching studs, ribs under the head hold the stud firmly in place. Length listed is overall length.
For technical drawings and 3-D models, click on a part number.
| Lg., mm | Thread Pitch, mm | PEM® Part Number | Thread Lg., mm | Drill Bit Size, mm | For Min. Material Thick., mm | For Min. Lg. Between Hole Center and Sheet Edge, mm | For Hole Dia., mm | Hole Size Tolerance, mm | Base Dia., mm | Tensile Strength | Hardness | Pkg. Qty. | Pkg. | |
Metric 18-8 Stainless Steel | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
M2.5 | ||||||||||||||
| 6 | 0.45 | FHS-M2.5-6 | 4 | 2.5 | 1.000 | 5 | 2.5 | 0.000 to 0.08 | 3.7 | Not Rated | Not Rated | 25 | 000000000 | 000000 |
| 8 | 0.45 | FHS-M2.5-8 | 6 | 2.5 | 1.000 | 5 | 2.5 | 0.000 to 0.08 | 3.7 | Not Rated | Not Rated | 25 | 000000000 | 00000 |
| 10 | 0.45 | FHS-M2.5-10 | 8 | 2.5 | 1.000 | 5 | 2.5 | 0.000 to 0.08 | 3.7 | Not Rated | Not Rated | 25 | 000000000 | 00000 |
| 12 | 0.45 | FHS-M2.5-12 | 10 | 2.5 | 1.000 | 5 | 2.5 | 0.000 to 0.08 | 3.7 | Not Rated | Not Rated | 25 | 000000000 | 00000 |
| 15 | 0.45 | FHS-M2.5-15 | 13 | 2.5 | 1.000 | 5 | 2.5 | 0.000 to 0.08 | 3.7 | Not Rated | Not Rated | 25 | 000000000 | 00000 |
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.
| Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | For Thread Fit | Each | |
Class X | |||||||
|---|---|---|---|---|---|---|---|
| M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | Class 6H | 000000000 | 0000000 |
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.
Class 6H | ||||||
|---|---|---|---|---|---|---|
| Thread Size | Pitch | Pitch Dia. Tolerance | Hardness | Material | Each | |
Class X | ||||||
| M2.5 | 0.45mm | -0.005" to 0.005" | Rockwell C70 | Chrome-Plated Tool Steel | 00000000 | 0000000 |