WESTport hexalobe plug gages are fixed-limit GO/NO GO gages for verifying internal hexalobe drive recesses on surgical fasteners, bone screws, and implant components. The GO member confirms the recess accepts a correctly sized driver; the NO GO guards the upper limit so worn or oversized recesses are caught before assembly.

Built to standard or to your print

Manufactured to ISO 10664 hexalobular driving-feature sizes, or to your own patented or proprietary drive profile. Our engineering team is experienced across the full range of standard and custom hexalobe geometries.

Certification & quality

• Precision ground, hand lapped and polished for accuracy, optimum finish, and maximum wear life
• Certificate of Accuracy, NIST-traceable — included with every gage
• Certified to ISO/IEC 17025 (A2LA-accredited); Long Form Certification available on a 5–7 business day turnaround

Request a quote for standard ISO 10664 or custom sizes, or pair with the external Hexalobe Ring Gage.