{"product_id":"titanium-bolt-m4x6-8-10-12-15-20-25-30-35-40mm-flange-torx-head-upper-pump-cover-screw-for-bicycle-and-motorcycle-pitch-0-7mm-by-tianswer","title":"Titanium bolt M4x6 8 10 12 15 20 25 30 35 40mm Flange Torx Head Upper pump cover Screw for Bicycle and Motorcycle, Pitch 0.7mm, by Tianswer","description":"\u003cp\u003e\u003cstrong\u003ePrecision CNC-machined Aerospace Ti-6Al-4V Grade 5 titanium M4 flanged Torx T20 screws engineered specifically for motorcycle master cylinder reservoir caps, hydraulic brake pump covers, bicycle derailleur limit screws, and lightweight electronics mounts.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eTorx T20 Drive: Zero Cam-Out \u0026amp; Anti-Strip Engineering\u003c\/h3\u003e\n\u003cp\u003eOEM hydraulic brake and clutch reservoir covers notoriously rely on soft steel Phillips (#1\/#2 JIS) or small 2.5mm internal hex fasteners. Combined with corrosive brake fluid exposure, factory screws frequently round off, seize, or strip during routine fluid flushes. Our M4 bolts feature a precision-machined 6-lobe Torx T20 internal drive that eliminates cam-out force, ensuring 100% radial torque transfer and effortless removal season after season.\u003c\/p\u003e\n\n\u003ch3\u003eIntegrated Flange Head: Leak-Free Uniform Clamping\u003c\/h3\u003e\n\u003cp\u003eEquipped with a low-profile 7.5mm diameter flanged base and 4.0mm head height, the integrated flange acts as a captive washer. It distributes clamping load uniformly across rubber diaphragm seals and aluminum reservoir caps without digging into or distorting delicate perimeter surfaces, ensuring a leak-proof hydraulic seal against vibration.\u003c\/p\u003e\n\n\u003ch3\u003eImpervious to DOT 3, DOT 4, \u0026amp; DOT 5.1 Brake Fluid\u003c\/h3\u003e\n\u003cp\u003eGlycol-ether and silicone-based hydraulic fluids rapidly deteriorate zinc coatings and induce galvanic corrosion between factory steel screws and cast aluminum master cylinders. Certified Grade 5 (Ti-6Al-4V) titanium forms a permanent passive titanium dioxide ceramic layer, rendering it completely impervious to brake fluid weeping, road salt, and harsh weather.\u003c\/p\u003e\n\n\u003ch3\u003eKey Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMotorcycles \u0026amp; Scooters:\u003c\/strong\u003e Front \u0026amp; rear master cylinder reservoir top covers (Brembo, Nissin, Magura, Formula), handlebar throttle clamp housings, and bar-end mirror hardware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoad, Gravel \u0026amp; Mountain Bikes:\u003c\/strong\u003e Rear \u0026amp; front derailleur high\/low (H\/L) limit screws, shifter bar clamps, water bottle cage mounts, and computer\/GPS mount brackets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRC Models \u0026amp; FPV Drones:\u003c\/strong\u003e Motor mounts, carbon fiber top plates, and camera gimbal brackets demanding high vibration resistance and minimum weight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications \u0026amp; Dimensions\u003c\/h3\u003e\n\u003cp\u003e\n  \u003cstrong\u003eMaterial:\u003c\/strong\u003e Certified Aerospace Ti-6Al-4V (TC4) Titanium Alloy, Grade 5\u003cbr\u003e\n  \u003cstrong\u003eThread Diameter:\u003c\/strong\u003e M4\u003cbr\u003e\n  \u003cstrong\u003eThread Pitch:\u003c\/strong\u003e 0.7mm (Standard Metric Coarse)\u003cbr\u003e\n  \u003cstrong\u003eDrive Type:\u003c\/strong\u003e Torx T20 6-Lobe Star Drive\u003cbr\u003e\n  \u003cstrong\u003eHead Style:\u003c\/strong\u003e Integrated Flanged Button Head\u003cbr\u003e\n  \u003cstrong\u003eHead Diameter:\u003c\/strong\u003e 7.5mm\u003cbr\u003e\n  \u003cstrong\u003eHead Height:\u003c\/strong\u003e 4.0mm\u003cbr\u003e\n  \u003cstrong\u003eWeight:\u003c\/strong\u003e ~1.0–2.0g per piece (approx. 45% lighter than OEM steel fasteners)\u003cbr\u003e\n  \u003cstrong\u003eAvailable Lengths:\u003c\/strong\u003e 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm\u003cbr\u003e\n  \u003cstrong\u003eAvailable Finishes:\u003c\/strong\u003e Natural Titanium, PVD Vacuum-Coated Gold, Rainbow, Burn Blue, PVD Deep Black\n\u003c\/p\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Torque Guidelines\u003c\/h3\u003e\n\u003cp\u003eFor master cylinder reservoir covers and carbon bicycle components, hand-tighten evenly across diagonal screws to a modest 1.5–2.0 N·m (13–18 in-lb) to avoid pinching the rubber gasket. For structural M4 mechanical applications, torque up to 3.0 N·m (26 in-lb). Applying a tiny dab of anti-seize paste or synthetic grease ensures smooth, gall-free service. To learn more about preventing stripped screw heads and why Torx outperforms conventional drives, read our \u003ca href='\\\"\/blogs\/technical-resources\/why-do-titanium-screws-strip-the-reddit-approved-guide-to-preventing-ti-6al-4v-bolt-failure\\\"'\u003eGuide to Preventing Titanium Fastener Stripping and Failure\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003ePrice is for 1 bolt.\u003c\/em\u003e\u003c\/p\u003e","brand":"Tianswer","offers":[{"title":"Rainbow \/ M4x6mm","offer_id":46190172045569,"sku":"TS-M4-FTX20-6-RB","price":2.24,"currency_code":"USD","in_stock":true},{"title":"Rainbow \/ M4x8mm","offer_id":46190172078337,"sku":"TS-M4-FTX20-8-RB","price":2.38,"currency_code":"USD","in_stock":true},{"title":"Rainbow \/ M4x10mm","offer_id":46190172111105,"sku":"TS-M4-FTX20-10-RB","price":2.5,"currency_code":"USD","in_stock":true},{"title":"Rainbow \/ 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