Countersunk head Allen socket screws are typically used in conjunction with a countersunk hole to give a flush finish. Sometimes referred to as countersunk socket bolts they are tightened with a hex Allen key. This kit contains fully threaded screws made to DIN 7991 (ISO 10642) This set contains a comprehensive selection of the most popular lengths of M3, M4 and M5 (3mm, 4mm & 5mm thread diameter) bolts A2-70 stainless steel has great weather resistance and longevity. It can be used in all outdoor conditions apart from where consistent exposure to either salt water or sewerage is expected. Matching 540-piece nut and washer kit available.
