Stainless Steel Screw Cover/Cap (Full Metal Construction 0.75" Diameter) Fasteners, Decorative Mirror, Sign/Advertising Hardware, Nails, Construction (8 Pack)

Product Information

Where the L1 dimension is blank the screw is fully threaded. The L1 dimension is for reference to the DIN document only. The most common thread type in production today. Usually specified as M then a number x another number. This signifies the thread diameter and the length of the fastener. Typically, A4 grade stainless steel costs slightly more than A2 because of its enhanced chemical and production properties. The extra cost can be justified, however, because hardware made of A4 stainless steel is extra resistant to tarnish and corrosion, enabling it to last a very long time. A4 stainless is often used in marine or chemical environments as it has greater corrosion resistance than A2.