A flush-head fastener for a matching countersunk mount. This Tianswer M5 × 0.8 full-thread screw has a flat countersunk head and hex socket, listed in Grade 5 Ti-6Al-4V (TC4) titanium alloy. Select a length to match your bicycle component's threaded depth and seating geometry.
Specifications
Thread: M5 × 0.8 mm
Listed lengths: 10, 15, 20, 25 and 30 mm
Head: flat countersunk; listed head diameter 10 mm
Drive: 4 mm hex key
Material: Grade 5 Ti-6Al-4V titanium alloy
Colors: titanium, gold, rainbow, burn blue and black
Price is for one bolt
Before installing
A flat head must seat against the correct countersink profile. Check the component maker's head-angle, length and thread requirements rather than assuming any M5 countersunk screw fits. Start threads by hand and follow the component's specified tightening procedure, especially on load-bearing bicycle assemblies. For precise metric and imperial sizing techniques, explore our Fastener Metrology Guide.
FAQ
Will this replace a button-head screw? Not by size alone: the seating surface is different. Match the original head geometry first.
