Fastener Inspection Products

Greenslade & Company supplies the widest range of fastener inspection equipment in the world. Our line includes GO/NOGO and variable thread gages, recess measuring devices, head height protrusion gages, length gages, concentricity gages, tapping screw testing equipment (including drill-screw and torque-tension measuring), and recording equipment. Much of our unique equipment is covered by U.S Patents.

Greenslade & Company is a specialized provider of dimensional calibration services to manufacturers and distributors throughout the world. Our services extend to the automotive, commercial, aerospace, medical industries and more. Our calibration laboratory has state-of-the-art precision equipment. To ensure the greatest degree of accuracy, all certifications are generated using automated input methods and a registered calibration software program. We are accredited to ISO 17025 by the American Association of Laboratory Accreditation (A2LA). With continued equipment additions and scope expansions, we are broadening our capabilities to ensure the best possible service to our customers.

Greenslade also provides consultation services in matters related to fastener quality issues, gage usage, calibration issues and special gage design requiring technical expertise.


Our company is taking all precautions during the COVID-19 coronavirus pandemic. We do remain OPEN for business and stand ready to serve you. We are limiting customer service interactions to PHONE and EMAIL. Although we are not promoting in person visits, we will be practicing non-contact package pick up and drop off, along with critical on-site calibration services as necessary.