Ruuvi Fischer 536869 70 mm

The Fischer 536869 70 mm screw is made for fastening into concrete and other solid mineral substrates. At 70 mm length and supplied in boxes of 20 pieces, the screw is intended for general utility applications where reliable anchoring and straightforward installation are required. Its design focuses on effective load transfer and mechanical engagement with concrete surfaces for typical construction and renovation tasks.

Advantages

The screw provides consistent holding power in concrete thanks to its thread profile and material hardness. Its 70 mm length offers a balance between embedment depth and ease of installation for medium-duty fixtures. Being delivered in boxes of 20 ensures a practical quantity for small to medium projects while reducing the need for frequent reorders.

Suitable for

• Fixing medium-duty brackets and supports to concrete walls
• Mounting electrical boxes, conduit clips, and cable trays
• Securing shelving, small cabinets, and lightweight frames
• General repair and renovation tasks in solid masonry

Key specifications

• Length: 70 mm
• Application substrate: concrete and mineral-based masonry
• Package quantity: 20 pieces per box
• Intended use: medium-duty fastening into solid substrates

How to use

Drill a hole of appropriate diameter and depth in the concrete substrate, clean the hole from dust and debris, and position the screw through the fixture into the prepared hole. Insert and tighten the screw with a compatible screwdriver or drill at moderate speed until the fixture is securely fastened; avoid overtightening which can reduce holding performance. For specific load values and drill bit sizes consult technical guidance for the substrate and fixture type.

Recommendations

Use the screw only in suitable mineral substrates such as concrete; do not use in hollow blocks or soft boards without appropriate anchors. Pre-drill and clear holes for optimal anchorage. Match screw length to fixture thickness and required embedment to ensure safe fixation.