Medical Gages

WESTport's medical gage division designs and manufactures both variable and fixed-limit gages for the medical device industry — with special emphasis on manufacturers of orthopedic and prosthetic devices. From Luer taper and hexalobe gages to bone plate pedestal gages, complex conical thread gages, and fully custom designs, our engineering team works alongside yours from first concept through final certification. Every gage is precision ground, hand lapped, and certified to ISO/IEC 17025 (A2LA-accredited), and ships with a Certificate of Accuracy traceable to NIST.

The WESTport medical gage line

Each gage is built to the specific demands of your application. Standard forms and proprietary geometries are both welcome — specify the standard, or send a drawing.

• Hexalobe Gages — Plug & Ring. Go/No-Go gages for internal and external hexalobe drive recesses on surgical fasteners, bone screws, and implant components. Built to ISO 10664 or to your patented/proprietary profile.
• Luer Taper Gages — ID & OD. Internal- and outside-diameter gages verifying the 6% Luer taper on syringes, catheters, IV sets, and connectors. Manufactured to ISO 594 and the current ISO 80369 small-bore connector standards.
• Bone Plate Pedestal Gages. Custom fixed-limit gages that verify the features that matter on locking and cortical bone plates — screw-hole diameters, countersink geometry, plate thickness, and feature-to-feature relationships — catching problems before expensive 5-axis-milled parts become rejects.
• Medical Thread Plug & Ring Gages. Fixed-limit Go/No-Go gages for internal and external medical threads, including the complex conical thread forms used in orthopedic and spinal fixation hardware. WESTport is among the foremost medical thread gage manufacturers in the country.
• Variable Thread Inspection System. A system purpose-designed for the medical industry that delivers actual measurement data — not just pass/fail — on conical medical threads: pitch diameter related to standoff, and standoff related to pitch diameter, while reducing overall gage inventory.
• Prototypes & Custom Medical Gages. Print-to-print gage design and build for new and existing devices — fixed-limit or variable, plug or ring, standard or special geometry — with engineering consultation from prototype through production.

What we inspect

• Hexalobe drive recesses (ID & OD)
• Luer tapers (ID & OD)
• Conical thread pitch diameter
• Thread standoff
• Bone-screw & implant threads
• Screw-hole diameter & countersink
• Plate geometry
• Custom & proprietary profiles

Medical gage types compared

Use this to identify the right gage for your inspection requirement. Not sure? Our engineering team will help you choose.

Medical device applications

Standards we manufacture to

Specify the standard on your quote request and we build the gage to match — or send a print for a fully custom form.

What comes with every gage

• Certificate of Accuracy, NIST-traceable — included with every gage, confirming it meets all applicable dimensional and tolerance requirements.
• ISO/IEC 17025 Long Form Certification available — complete dimensional data, measurement uncertainty, and full NIST traceability; A2LA-accredited, on a 5–7 business day turnaround.
• Hand lapped and polished, every gage — for superior accuracy, optimum surface finish, and maximum wear life, then inspected and certified to ISO/IEC 17025.
• Engineering support included — our design team is a direct extension of your quality group, from first specification review through production.