Universal for fixing stainless steel plates onto wood in permanently exposed outdoor environments.

Stainless steel A2, partial thread, pan head, AW drive

Joins wood instead of splitting it

Asymmetrical thread – greater speed, higher tension resistance

• Low screw-in torque
• High over-turning force
• Faster screwing than conventional particle board screws

AW drive — more power

• Optimal force transmission
• Excellent fit
• Rapid finding
• Screw settles securely
• Virtually no unscrewing of bit
• No wobbling
• No damage to surface coating of screw
• Only 5 bit sizes for diameters 3.0 to 12.0 mm

Ring thread — less tendency of the wood to split, very few blow-outs

• Low splitting forces, in particular when screwing close to edges
• Reduction of screw-in torque
• Punch effect of ring thread largely prevents blow-outs

Material:

Corrosion-resistant, austenitic stainless steel (1.4301; 1.4567)

Notice

Pre-drilling to core diameter on solid hard woods

ASSY 3.0 A2 have limited resistance to acid and are unsuitable for chloride gas-containing atmospheres

Use Würth timber construction software to measure ASSY screws 5 mm or more in diameter. To attach metals to wood, bradawl a precise cutout in the metal tab.

ASSY 3.0 particle board screws are optimised for use in wooden materials. When used in plastic anchors, a reduction of the load-bearing capacity is possible. Therefore, we recommend only using screws without optimised thread tips (drilling tip, mating thread, ring thread, serrated edge, self-clearing groove, etc.) in plastic dowels, e.g. Würth ASSY D, prefix 0151 (countersunk head) and prefix 0153 (pan head).

The range of applications of the various stainless steels is contained in the following ISER (German Information Office for Rustproof Stainless Steel, Non-Rusting Steels for Various Environmental Conditions, www.edelstahl-rostfrei.de, Information Sheet 828) table. Rustproof stainless steels (e.g. material no. 1.4016) are recommended there for use in atmospheric processes only for use in a rural environment, and here as well only with great restrictions. We therefore recommend only using austenitic stainless steels for outdoor applications, taking the environmental conditions into account. Stainless steel A4 is especially suitable for use in an industrial atmosphere and for use near the sea.

ETA-11/0190

When using these screws, please follow ETA-11/0190 specifications.

Application area

The ASSY 3.0 A2 made from corrosion-resistant, austenitic stainless steel is designed especially for applications outdoors, in damp rooms and in salty atmospheres

Instructions

Screw-in angle 0° to 90°. For coniferous wood or wood-based materials made from softwood, make the fitting without a bradawl. To reduce the edge distances make a predrilled hole according to the core diameter. When screwing into hardwood, drill according to ETA-11/0190.