Founded in 1908, Industrial Nut Corp. is a fourth-generation, family-owned Sandusky manufacturer of precision nuts, locknuts and other internally threaded components made to customer print. The company combines domestic production with robotic-fed CNC machining and in-house finishing to support demanding OEM and distributor applications. Industrial Nut is ISO 9001:2015 registered and remains under Springer family leadership.
ISO 9001:2015
National Fastener Act Compliance
Compliance program
Hyland Screw Machine ProductsFounded in Dayton in 1928, Hyland Screw Machine Products remains a fourth- and fifth-generation family-operated manufacturer known for nearly a century of precision work. The company produces turned components for industrial customers, with annual output exceeding 1 million parts, and maintains ISO 9001:2015 certification.DAYTON, OH
The Auto Bolt CompanyFounded in 1948, The Auto Bolt Company has been family owned and operated since 1996, building its identity around more than seven decades of bolt-making in Cleveland. Its 70-plus employees work from a 130,000-square-foot facility to produce American-made cold-heading fasteners, with engineering support for customers who need parts made to a print rather than selected from a catalog. ISO 9001:2015 certification and an onsite quality lab support its work for industrial customers.CLEVELAND, OH
Richland Screw Machine Products, IncFounded by Charles J. Schoenman in a Mansfield double garage in 1946, Richland Screw Machine Products makes precision screw-machine parts and continues to operate as a hands-on family business under his grandson, Randall L. Schoenman. The company combines its Brown & Sharpe single-spindle equipment with newer CNC machining to produce customer-specified parts, and has held ISO certification since 2017.MANSFIELD, OH
Keystone Threaded ProductsFamily-owned and operated in Valley View, Ohio, since 1920, Keystone Threaded Products manufactures USA-made standard and customized precision roll-threaded rods and related machined parts. Now led by third-generation owner Betsy Minnick, the certified women-owned business is known for handling large-diameter threading, including work on what it calls the world’s largest thread roller. Keystone also offers complete-part machining and inventory management, with quality controlled through material traceability and multi-step inspection.CLEVELAND, OH