Pro-Bolt M4 Titanium Tapered Socket Cap Bolts.

Engineered with a distinctive tapered head, Pro-Bolt’s Titanium Tapered Socket Cap Bolts combine aerodynamic styling with exceptional performance for demanding applications.

Precision machined from Aerospace Grade Titanium (Grade 5: 6AL-4V), offering outstanding strength, corrosion resistance, and up to 40% weight savings compared to steel fasteners — ideal for motorsport, performance engineering, and custom builds.

Key Features:

Pro-Bolt's adaptation of DIN 912 and ISO 4762 – Conforms to industry standard dimensions, ensuring compatibility with standard socket cap fittings.

Pro-Bolt’s Unique Tapered Design – Streamlined head profile enhances aesthetics and reduces drag in airflow-sensitive environments.

Forged Construction & Rolled Threads – Delivers superior mechanical performance, fatigue resistance, and structural integrity under extreme conditions.

DLC Black Titanium Coating – Diamond-Like Carbon (DLC) surface treatment ensures outstanding wear protection and anti-galling properties.

Anodised Finishes Available – Available in Blue, Gold, and Purple Haze. (Please note: Titanium anodised finishes differ from our Aluminium range).

Multiple Sizes Available – Full selection of sizes available, with custom manufacturing options on request.

Item No.,M = Thread Diameter,Thread Pitch,L = Length,T = Thread,L-T = Shank,K = Head Height,ØDc = Head Diameter,ØDh = Head Diameter,S = Allen Key Size,Weight (g)

TISC406,M4,0.70,6.00,6.00,N/A,4.00,7.00,5.20,3.00,0.66

TISC410,M4,0.70,10.00,10.00,N/A,4.00,7.00,5.20,3.00,0.84

TISC412,M4,0.70,12.00,12.00,N/A,4.00,7.00,5.20,3.00,0.92

TISC415,M4,0.70,15.00,15.00,N/A,4.00,7.00,5.20,3.00,1.05

TISC420,M4,0.70,20.00,19.00,1.00,4.00,7.00,5.20,3.00,1.21

TISC425,M4,0.70,25.00,19.00,6.00,4.00,7.00,5.20,3.00,1.50

TISC430,M4,0.70,30.00,19.00,11.00,4.00,7.00,5.20,3.00,1.75

TISC435,M4,0.70,35.00,19.00,16.00,4.00,7.00,5.20,3.00,2.02