Eastern Precision Machining Co.

Eastern Precision Machining Co. is a Newton, NH-based manufacturer specializing in Swiss screw machining and precision CNC machining of screw and machined products. The company provides tool design and prototype Swiss machining through close-tolerance, high-volume production runs, supported by multiple PC-based CNC Swiss machining centers. Its manufacturing capabilities include Swiss screw machining with very tight tolerances, four-axis milling, CNC turning with bar feeding, and in-house die manufacturing for metal stamped components, along with secondary processes such as assembly, drilling, tapping, deburring, broaching, grooving, and vibratory finishing. Key machines include Tsugami and Mazak Swiss turn lathes, Prototrac CNC controls and milling cells, a Doall hydraulic surface grinder, a 28-ton press, and an in-house heat treat oven with Rockwell hardness test equipment, plus drill presses and finishing systems such as glass bead sand blasting and vibratory sanders. Eastern Precision Machining serves industries including medical, power generation, fire suppression, electronic, automotive, and robotics, producing components such as connectors, fittings, housings, screws, shafts, valves, and washers.

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