All measurements in millimeters (mm) Metric DIN 603 mushroom head square neck carriage bolts have a smooth domed head that prevents them from being tightened or loosened from above. The square shoulder below the head is designed to self-anchor into wood and resists turning when the nut is tightened on
All measurements in millimeters (mm) Metric DIN 7991 hexagon socket cap screws have a flat countersunk head with an internal hexagonal drive suited for a hex / Allen key or wrench. The internal drive is ideal for situations where externally wrenched screws are impractical such as in applications where limited
All measurements in millimeters (mm) Metric DIN 915 hexagon socket set screws with dog point are headless and fully threaded screws with an internal hexagonal drive at one end and an elongated blunt surface at the other. They are to be inserted through pre-drilled aligned holes which permit tightening against
All measurements in millimeters (mm) Metric DIN 914 hexagon socket set screws with cone point are headless and fully threaded screws with an internal hexagonal drive at one end and a conical shaped surface at the other. They are to be inserted through pre-drilled aligned holes which permit deep penetration
All measurements in millimeters (mm) Metric DIN 913 hexagon socket set screws with flat point are headless and fully threaded screws with an internal hexagonal drive at one end and a flat surface at the other. They are to be inserted through pre-drilled aligned holes and used to reset or
All measurements in millimeters (mm) Metric DIN 916 hexagon socket set screws with cup point are headless and fully threaded screws with an internal hexagonal drive at one end and a cup-shaped (concave) surface at the other. They are to be inserted through pre-drilled aligned holes which permit tightening against