Helical Lap & Manufacturing Co., a subsidiary of Engis® Corporation, has been a leader in precision lapping solutions since 1958, offering high-quality internal and external expanding cylindrical laps. These specialized tools are engineered to achieve superior geometry and mirror surface finishes, often exceeding other finishing methods.
Whether improving barrel-shaped bores, straightening I.D. or O.D., or correcting out-of-round conditions, Helical Laps excel in producing exceptional results. With precision tolerances of .000005″ roundness, .000010″ straightness and surface finishes finer than one microinch, their proprietary cast iron formulation enhances durability and performance.
Ideal for hand lapping or mounting on machines like lathes, mills, and drill presses, these tools are versatile and easy to use without complex setups. Manufactured in the USA, Helical Laps provides fast stock removal, fine surface finishes and are perfect for a wide range of industrial applications.
For more information, visit Helical Lap or contact us at info@helicallap.com.