Precise Dimensions: Featuring a thread diameter of 1/2 inch (12.5 mm) and a thread length of 1 inch (25.55 mm), this bolt is engineered for . to verify the size prior to purchase to a perfect match with your milling machine. Robust Construction: Crafted from premium metal, this lock bolt boasts exceptional hardness and durability. Its robust construction prevents breakage and resists rust, extending the operational lifespan and reliability of your milling equipment. Effortless Installation: Designed for user convenience, this lock bolt handle can be easily installed without the need for complex instructions. Its straightforward design allows for immediate use, simplifying the setup process and saving time. Compatibility Assurance: Specifically designed for seamless integration, this milling machine headstock lock bolt handle is fully compatible with Bridgeport models, ensuring a and hassle-free functionality. Functional Efficiency: This lock bolt handle not only secures the spindle box of your milling machine but also enhances the machine's overall stability and performance during operation, making it an essential component for maintaining optimal functionality., Weight: 0.37037660016 Pounds, Manufacturer: muqeu