Thread-Craft Inc.

Thread-Craft, Inc. is a manufacturer of mechanical linear movement actuators such as ball screw assemblies, acme or lead screws, roller screws and precision spindles. Our machining expertise also involves special tool holding devices and precision machine details. We are a full-service repair facility, capable of evaluating and repairing or remanufacturing products to OEM specifications. In addition, we offer precision machining, grinding and thread grinding services. 


Lloyd E. Johnson and Ture A. Lindholm founded Thread-Craft, Inc. in the early 1950s. Originally employing three people, Thread-Craft, Inc. occupied a total of 1,000 square feet. The initial product line consisted of threaded plug and ring gages and a thread grinding service. Thread-Craft, Inc. was relocated in 1956 to a 3,000-square-foot facility in Warren, MI . In 1958 Thread-Craft, Inc. was incorporated. 


Early in the 1960s, the majority of work consisted of worms, multiple starts, repair and new manufacture of acme screws More... and nuts thread grinding, turning and milling, and ID/OD grinding. Jobs made complete to print began to make up a large percentage of Thread-Craft's work in the mid to late 1960s. Three thousand square feet were added to the facility in 1967 in order to compensate for Thread-Craft, Inc.'s rapid growth and expanding product line.


 In the 1970s, gages were removed from the product line and the focus became machine tool oriented. Lloyd E. Johnson bought Ture A. Lindholm's shares in 1979 and became the sole owner of Thread-Craft, Inc. The following year he rented a 3,000-square-foot manufacturing plant located next to the existing facility to accommodate newly acquired turning and milling equipment. Lloyd E. Johnson retired in 1984 and was succeeded by Dennis L. Johnson as president. Thread-Craft, Inc.'s vision and commitment to quality continued.


 During the 1980s, Thread-Craft, Inc. experienced continued growth due to the ability to provide superior quality machine tool components such as machine spindles, lead screws and nuts, fixtures, and a variety of other machine tool details quickly and accurately. Ball screw assemblies were added to the product line in 1988. Special machinery and equipment was purchased to manufacture the assemblies. By 1993 it was apparent that Thread-Craft, Inc. would need an additional 3,000-square-foot rental building to assemble and package the product.


 By 1994, Thread-Craft, Inc. could no longer continue to grow in its 12,000-square-foot facility. The process of planning a new facility had begun. It was determined that the office and manufacturing space would need to double, and production machines and material handling aids such as overhead cranes would be necessary. In designing the new manufacturing space, the company emphasized employee health and comfort, including climate control and a state of the art air purification system.

Mac-Mold Base, Inc

Protomatic Inc.

Protomatic, Inc. is a CNC precision machine shop specializing in CNC precision machining as well as prototype and short-run production. We are capable of 3, 4, and 5-axis CNC machining, laser engraving, engineering services, and many other technical processes which set us apart from the typical run-of-the-mill CNC precision job shop with which you may be more familiar. We offer design support for your prototyping applications or manufacturing for your precision milling and multi-axis turning applications. Protomatic manufactures components and assemblies for a variety of industries, focusing mainly on medical and aerospace applications.


In February 1971, William Wetzel founded Protomatic as a high-quality prototype and short-run production machining operation. The company is located in a 30,500 square foot facility in Dexter, Michigan - west of Ann Arbor. With well over three decades of operation and hundreds of years of combined experience in materials, Protomatic excels in engineering, More... CNC milling, CNC Turning, with manufacturing and assembly of custom OEM parts and products.


 One of the most discerning characteristics of Protomatic in comparison to our competitors is our familiarity with a vast range of materials. We work with rubbers, metals, and plastics, of course, but our experience with the engineering of elemental materials and superalloys sets us apart from the competition.


 Through our facilities, diverse capabilities, vast equipment resources, and conservative, steadfast business practices, we at Protomatic have been able to supply fast, efficient service to countless satisfied customers for over four decades. We have become a leading contract manufacturer of CNC precision machining components, high-precision prototypes, and short-run machine components and assembly. Our standards of quality are ensured through a complete process of testing and state-of-the-art quality inspection.


 Protomatic has a highly qualified and experienced team of employees who are committed to on-time delivery of high quality parts at competitive pricing. High standards are ensured through a complete process of testing and state-of-the-art quality inspection. Protomatic is an ISO 9001:2008 registered company and is compliant with AS 9100C, ISO 13485:2003, DFARS, and ITAR export licensed.

Microtech Machine Co., Inc.

Paragon D&E

Supreme Gear

Manufacturer of precision machined parts and assemblies specializing in gear boxes, pumps, assemblies, (cylinder, seal and housing), gears (spur, helical, bevel, pump and worm), spline shafts, couplings, sprockets,output flanges, and general machined parts for the aerospace, defense, automotive, commercial and marine industries.

Baker Engineering, Inc

Bradhart Products, Inc.

In 2014 Bradhart Products shipped over 2,100,000 component parts. In the last 3 years we have produced over 800 different part configurations.


While accomplishing those things, we maintained a 99.9% defect free quality record as well as a 99.1% on-time delivery rate. You can visit our website to view the charts which show these performance statistics.


Today, Information Technology plays a vital role in assisting a CNC machining company in meeting customer requirements. Bradhart Products integrates the most advanced information technologies available into our processes, which allow us to:


 -Streamline our manufacturing-intensive processes that are typically required for precision machined components


 -Create efficient processes by providing faster problem resolution for shorter concept to completion time


 -Implement better ways to control throughput, saving our customers time and money


Call us today and see how we can assist you in reaching your manufacturing objectives!

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Suppliers with AS9100 Certification located in (Michigan)

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