Maintenance / 21 April 2026 / 4 min read
Clamping stud torque: getting it right
The right torque keeps a stud secure without over-stressing the thread. The ranges are short and easy to follow.
A clamping stud connects the fixture to the plate. If it is too loose, it can shift. If it is overtightened, the thread can be damaged. INNGRIT lists a torque range for each stud.
Torque ranges
| Part | Item # | Torque (N·m) |
|---|---|---|
| Clamping Stud Pitch 52 | HL02724 | 10–17 |
| Clamping Stud Pitch 96 | HL02727 | 20–30 |
| Φ90 retention knob | – | 20–30 |
| Φ120 retention knob | – | 30–40 |
| Φ150 retention knob | – | 90–145 |
How to tighten a stud
- Clean the thread and the seat on the fixture.
- Thread the stud in by hand until it seats.
- Tighten with a torque wrench to a value inside the range in the table.
- Check that the stud head sits as expected, then load the fixture.
Common mistakes
- Using the wrong stud for the pitch. Pitch 52 uses the 12 mm HL02724 and Pitch 96 the 16 mm HL02727.
- Estimating by feel. Use a torque wrench, especially on large fixtures.
- Tightening dirty threads. Debris gives a false torque reading and can mark the thread.
Universal plates use universal studs: INN02772 and INN02773 for Pitch 52, INN02774 and INN02775 for Pitch 96, in hex socket and set screw versions.
