Titanium Bolt M6x16 18 20 25 30 35 40mm Hex socket cap screw with tapered head and Anti-fall off Ti Washer for Bike, Pitch 1mm, by Tianswer

Precision CNC-machined Aerospace Ti-6Al-4V Grade 5 titanium M6 tapered socket head cap screws equipped with captive anti-fall-off titanium washers, engineered specifically for downhill and enduro bicycle stem faceplates, suspension fork triple crowns, disc brake post mounts, and motorcycle handlebar clamps.

Captive Anti-Fall-Off Titanium Washer Engineering

Handling loose washers during fork service or trailside stem adjustments often leads to lost hardware and uneven clamping. Our M6 bolts feature a captive precision titanium washer retained securely on an undercut neck beneath the head. In addition to convenience, the washer serves a critical mechanical function: it isolates rotating bolt friction from the mating aluminum or carbon surface, preventing surface galling, washer dishing, and inaccurate torque readings while ensuring 100% consistent clamping preloads.

Aerodynamic Tapered Cone Head Architecture

The 10.0mm diameter tapered cone head profile is engineered to eliminate unnecessary outer perimeter mass while maintaining a rigid 6.0mm head height. It houses a precision-broached 5mm internal hex drive with generous depth, delivering positive bit engagement that prevents tool cam-out and stripped sockets under repeated torque cycles.

High-Stress Cockpit Fatigue Strength & Sweat Resistance

Heavy-duty mountain bike cockpits and downhill fork crowns endure intense alternating bending moments and dynamic vibration during rock garden descents, drops, and aggressive berm carving. Certified Grade 5 (Ti-6Al-4V) titanium provides a tensile strength of 950–1050 MPa (matching Class 10.9 high-tensile steel) while cutting hardware weight by roughly 45%. Titanium's natural ceramic-like oxide barrier is completely immune to sweat corrosion and winter trail mud, preventing seized hardware in carbon and alloy components.

Key Applications

• Mountain Bikes (DH, Enduro, Trail): Direct-mount stem faceplates, dual-crown downhill fork clamps (Fox 40, RockShox Boxxer, Marzocchi 58), and post-mount disc brake caliper fixings.
• Road & Gravel Bicycles: Heavy-duty oversized stem clamps, integrated handlebar systems, and disc brake caliper frame adapters.
• Motorcycles & Powersports: Handlebar riser clamp hardware, triple clamp pinch bolts, front fender mounts, and steering damper brackets.

Specifications & Dimensions

Material: Certified Aerospace Ti-6Al-4V (TC4) Titanium Alloy, Grade 5
Thread Size: M6
Thread Pitch: 1.0mm (Standard Metric Coarse)
Head Style: Tapered Cone Socket Head with Captive Anti-Fall-Off Washer
Head Diameter: 10.0mm
Head Height: 6.0mm
Drive Type: 5mm Allen Key / Internal Hex Drive
Available Lengths: 16mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm
Available Finishes: Natural Titanium, PVD Vacuum-Coated Gold, Rainbow, Burn Blue, PVD Deep Black

Installation & Torque Guidelines

Clean internal threads thoroughly before installation. Apply a light smear of anti-seize paste or synthetic grease to the thread flanks and beneath the captive washer face. When securing 4-bolt stem faceplates, tighten bolts in an incremental 'X' pattern to ensure uniform faceplate gap spacing. Torque to 9.0–10.5 N·m (80–93 in-lb), taking care never to exceed the maximum torque stamped on your stem, handlebar, or fork crown. To learn more about selecting high-stress fasteners and avoiding common fatigue failures, read our Ultimate Guide to Choosing Titanium Fasteners.

Price is for 1 bolt with captive washer.