Titanium Bolt M8x15 20 25 30 35 40 45 50 60 70mm DIN912 Column Hex Socket Head Screw for Bike Motorcycle, Pitch 1.25mm, by Tianswer

Industrial-grade Ti-6Al-4V Grade 5 titanium M8 DIN 912 (ISO 4762) cylindrical socket head cap screws engineered for high-tension motorcycle triple clamps, handlebar risers, mountain bike suspension links, and automotive structural bracing.

DIN 912 / ISO 4762 Heavy-Duty Cylindrical Head Architecture

The standardized DIN 912 (ISO 4762) socket head cap profile is the benchmark for structural engineering fasteners. Featuring a 13.0mm diameter cylindrical head with a full 8.0mm head height, it houses a deep 6mm internal hex socket. Unlike shallow button or countersunk heads, the deep hex pocket accommodates high installation torques without rounding off, fitting perfectly into standard counter-bored recesses across motorcycle forks, billet triples, and engine covers.

Partial Shank Engineering for Maximum Shear Rigidity

For lengths 30mm and under, the bolt is fully threaded for versatile engagement in blind tapped holes. For lengths exceeding 30mm, the bolt incorporates a precision unthreaded shank with a standardized ~30mm thread engagement. When clamping through-bolted mechanical assemblies (such as fork pinch clamps or shock linkage eyes), the smooth unthreaded shank bridges the shear plane, providing maximum cross-sectional area and exceptional resistance to cyclic shear fatigue.

Aerospace Grade 5 (Ti-6Al-4V) Performance & Weight Savings

Precision CNC-machined from certified Grade 5 Ti-6Al-4V titanium, these bolts achieve a minimum tensile strength of 950–1050 MPa (matching or exceeding Class 10.9 high-tensile steel). At roughly 45% lighter than steel equivalents, swapping high-mounted chassis fasteners noticeably lowers the center of gravity, while titanium's permanent oxide layer ensures complete immunity to rust, road salt, and harsh outdoor exposure.

Key Applications

• Motorcycles & Powersports: Triple clamp fork pinch bolts, handlebar riser clamps, footpeg hanger brackets, engine case side covers, and exhaust header flange mounts.
• Mountain Bikes (MTB & Downhill): Direct-mount stem bolts, fork crown pinch bolts, suspension pivot linkages, and heavy-duty frame pivots.
• Motorsport & Automotive: Intake manifold hardware, coil pack brackets, strut bar anchors, and lightweight steering column brackets.

Specifications & Dimensions

Material: Certified Aerospace Ti-6Al-4V (TC4) Titanium Alloy, Grade 5
Standard: DIN 912 / ISO 4762 Socket Head Cap Screw
Thread Size: M8
Thread Pitch: 1.25mm (Standard Metric Coarse)
Head Diameter: 13.0mm
Head Height: 8.0mm
Drive Type: 6mm Allen Key / Internal Hex Drive
Threading Profile: Full thread (≤ 30mm length); Partial thread with smooth shank and ~30mm thread engagement (> 30mm length)
Available Lengths: 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, 70mm
Available Finishes: Natural Titanium, PVD Vacuum-Coated Gold, Rainbow, Burn Blue, PVD Deep Black

Installation & Torque Guidelines

Ensure female threads are clean and lubricated with a light coating of anti-seize paste to prevent galling under high preloads. Torque using a calibrated manual torque wrench with a quality 6mm hex bit to 20–24 N·m (15–18 lb-ft). Always follow specific torque recommendations provided by your vehicle or component manufacturer. To learn more about thread rolling versus cutting and how shank geometry influences shear strength, read our Fastener Engineer's Guide to Rolled Threads & Shear Failure.

Price is for 1 bolt.