Compact hammer head bolt (T-bolt) with M8 thread and 20 mm length, made from steel with an
electrolytically zinc-plated finish. Designed for quarter-turn engagement in C/U/T-slot profiles, it provides a neat,
drill-free fastening for brackets, straps and accessories on greenhouse frames.
The precise M8 thread offers reliable clamping with standard nuts and washers, while the zinc coating delivers clean,
everyday corrosion protection in covered environments. Ideal for positioning screen hardware, guides, trays and light
services along purlins and trusses.
Key features
- M8 × 20 mm: popular size for compact slot connections and thin-wall sections.
- Hammer head / T-geometry: 90° twist to lock behind slot flanges; quick assembly.
- Electrolytic zinc plating: uniform finish and practical corrosion resistance.
- Low profile: tidy fastening without protruding hardware into crop aisles.
- Easy pairing: use with standard M8 nuts, flat/lock washers and backing plates.
Greenhouse applications
- Mounting screen clips, guide rails and sensor brackets in slot channels.
- Fixing cable/pipe trays, small straps and end-stops on purlins and trusses.
- Attaching door/vent hardware and light service frames to C-/U-/T-profiles.
Installation guidance
- Insert head into the slot, rotate 90° to engage, slide to position and tighten evenly.
- Use suitable washers; avoid over-torque on thin profiles to prevent slot deformation.
- Keep channels free of debris; preserve the zinc layer by avoiding grinding nearby.
