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. | PEM® Part Number | Thread Lg. | Drill Bit Size | For Min. Material Thick. | For Min. Lg. Between Hole Center and Sheet Edge | For Hole Dia. | Hole Size Tolerance | Base Dia. | Tensile Strength | Hardness | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2-56 | |||||||||||||
1/4" | FH-256-4 | 11/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | Not Rated | Not Rated | 50 | 000000000 | 000000 |
5/16" | FH-256-5 | 15/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | Not Rated | Not Rated | 50 | 000000000 | 00000 |
3/8" | FH-256-6 | 19/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | Not Rated | Not Rated | 50 | 000000000 | 0000 |
1/2" | FH-256-8 | 31/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | Not Rated | Not Rated | 50 | 000000000 | 0000 |
5/8" | FH-256-10 | 35/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | Not Rated | Not Rated | 50 | 000000000 | 00000 |
3/4" | FH-256-12 | 43/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.159" | 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. | PEM® Part Number | Thread Lg. | Drill Bit Size | For Min. Material Thick. | For Min. Lg. Between Hole Center and Sheet Edge | For Hole Dia. | Hole Size Tolerance | Base Dia. | Tensile Strength | Hardness | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2-56 | |||||||||||||
1/4" | FHS-256-4 | 5/32" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 50 | 000000000 | 000000 |
5/16" | FHS-256-5 | 7/32" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 50 | 000000000 | 00000 |
3/8" | FHS-256-6 | 5/16" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 50 | 000000000 | 00000 |
1/2" | FHS-256-8 | 27/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 25 | 000000000 | 0000 |
5/8" | FHS-256-10 | 35/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 25 | 000000000 | 0000 |
3/4" | FHS-256-12 | 43/64" | No. 44 | 0.040" | 3/16" | 0.085" | 0.000" to 0.003" | 0.129" | Not Rated | Not Rated | 10 | 000000000 | 0000 |
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.
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.