Boulonnerie dimensions USA Colony

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Colony Machine has been supplying precision-engineered Harley-Davidson fasteners for over 50 years, making them the natural choice when you need correct USA-thread hardware for any build or restoration project. Their catalogue covers more than 3,000 engineered kits — from engine mounting bolts and brake rotor fasteners to complete stock hardware sets — available in chrome, zinc, and OEM-matched finishes. Whether you are freshening a Twin Cam or restoring a vintage Big Twin, Colony delivers accurate threads and grades every time.