Hex head cap screw Koelner DIN 933 M8×30 mm A2 stainless steel full thread, pack of 4

Koelner DIN 933 hex head cap screw M8×30 mm is a full-thread stainless steel fastener designed for general mechanical and construction use. Made from A2 stainless steel and conforming to DIN 933 form, this M8×30 screw offers corrosion resistance and a consistent metric thread profile suitable for many indoor and outdoor applications. Supplied as a pack of 4, the screw is intended for assemblies where moderate corrosion resistance and reliable clamping are required.

Advantages

The full-thread design provides continuous engagement along the shank, improving grip in through-bolt and into-threaded-plate connections. A2 stainless steel offers a balance of strength and corrosion resistance for nonmarine environments, while the hex head allows for easy installation and removal with standard spanners or sockets. The DIN 933 form ensures dimensional consistency and compatibility with common metric nuts and tapped holes.

Suitable for

• General mechanical assemblies and repair work
• Joining metal parts, brackets, and frames
• Fixing wood to metal where a durable screw is needed
• Indoor and outdoor fixtures where moderate corrosion resistance is sufficient

Key specifications

• Thread type: full metric thread
• Thread size: M8
• Length: 30 mm
• Head type: hex head cap screw
• Material: A2 stainless steel (austenitic stainless)
• Corrosion resistance: suitable for general atmospheric conditions
• Package quantity: 4 screws

How to use

Select matching M8 nuts or a tapped hole of appropriate class and ensure mating surfaces are clean and aligned. Insert the screw through the components to be joined and engage the nut or thread, tightening with an appropriate spanner or socket until secure. For repeatable clamping, use a torque wrench and follow recommended torque values for M8 fasteners in A2 stainless steel, taking into account material thickness and joint design.

Usage recommendations

For best results, avoid use in highly chlorinated or marine environments where A2 stainless steel may corrode over time; consider higher-grade stainless if necessary. When fastening soft materials, use washers to distribute load and reduce pull-through. Store in a dry place to preserve corrosion-resistant properties.