Rock Solid M14 Hex Serrated Flange Bolts 40mm Long 10.9 Grade Carbon Steel Screws With Black Oxide Coating Built Like A Tank For Heavy Duty Auto And Mechanical Tasks Pack Of Two
✔️ Two M14x40mm bolts, 28mm flange, 10.9 steel, black oxide finish
This set of metric hardware merges a wide flat face with jagged grip teeth to secure heavy mechanical joints. Shop mechanics and assembly line workers rely on these fasteners for engine mounts, structural brackets, and gearbox housings that see constant movement.
✅ Package includes two hex head bolts sized M14 x 40mm / 1.57in overall length✅ Serrated circular flange spans 28mm / 1.10in and acts as a locking washer
✅ Standard 2mm / 0.08in thread pitch matches common metric hardware requirements
✅ Hex width measures 18mm / 0.71in and requires standard wrench sizing tools
✅ Hex thickness reads 12.4mm / 0.49in for solid torque transfer under load
💡 What makes a serrated flange bolt handier than a plain hex screw for vibrating frames?
These fasteners solve common mount failures by combining spreader rings with biting teeth. Mechanics love them because they hold fast without extra lock washers. You get reliable joints that survive rough daily work.
- jagged flange teeth bite into housing walls to fight rotational play
- thick washer face shares pressure evenly across fragile backing plates
- hardened alloy core stays rigid when engines shake components apart
- matte finish blocks shop dust from sticking to exposed drive areas