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DIN 912 is the standard for hex socket cap screws with a hex socket head. A2-70 indicates stainless steel of grade A2 with a minimum tensile strength of about 70 ksi, offering good corrosion resistance suitable for outdoor use.

The WC Screw is offered in sizes ranging from M4x25 mm to M8x50 mm, covering small to medium fastener needs with hex socket heads.

Material: A2-70 stainless steel; Head type: hex socket cap; Standard: DIN 912; Finish: corrosion-resistant stainless steel; Lengths: 25–50 mm; Diameters: M4–M8.

Insert the screw and turn it with an appropriately sized hex key (Allen wrench) that fits the hex socket head. Start by hand, clean the threads if needed, then tighten until the connection is snug. Avoid overtightening to prevent thread damage.

Use the correct hex key size to avoid rounding the head. Ensure the screw material is compatible with nearby metals to prevent galvanic corrosion (e.g., avoid mixing stainless with dissimilar metals in harsh environments).

Compared to M6x30mm (https://fepy.com/product/m6x30mm-din912-a2-70-hex-socket-cap-screw), the M6 version has a larger diameter and longer reach, offering higher load capacity. Compared to M8x50mm (https://fepy.com/product/m8x50mm-din912-a2-70-hex-socket-cap-screw), the M8 is larger still for even stronger assemblies. Both are DIN 912 A2-70 stainless steel and share the same head type and corrosion resistance.

Choose the WC Screw when you need a corrosion-resistant, outdoor-rated hex socket cap screw in the M4–M8 range with lengths from 25–50 mm. If your load, diameter, or length requirements differ (e.g., heavier loads or longer reach), consider the M6x30mm or M8x50mm variants.

Ideal for outdoor furniture, garden equipment, metal framing, gate assemblies, and other exterior hardware where a secure, corrosion-resistant fastener is needed.

Thread locking can be used for vibration-prone assemblies, and a light lubricant can ease installation. Ensure compatibility with stainless steel and the mating materials to avoid corrosion or buildup.

With A2-70 stainless steel, it’s designed for durability with minimal maintenance in typical outdoor environments. Periodically inspect for signs of corrosion and replace if patina or rust appears, especially in aggressive exposure zones.