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Straight-Sided Spline Ring Gage
Straight-Sided Spline Ring Gage
Regular price
$0.01 USD
Regular price
Sale price
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WESTport straight-sided spline ring gages inspect external straight-sided splined shafts for functional fit and dimensional conformance. Straight-sided splines have parallel tooth flanks rather than an involute profile, so they require gages cut specifically for that tooth form.
Standards & setup
Built to the straight-sided standard called out on your print, such as DIN 5482, or to your drawing. Straight-sided gages are not interchangeable with involute spline gages — confirm the spline design on the drawing before ordering. Compatible with taper master plug gages for setup and verification.
Certification & quality
- Designed, ground, and hand lapped in-house for accuracy and long service life
- Certificate of Accuracy, NIST-traceable — included with every gage
- Calibrated in our ISO/IEC 17025 accredited laboratory; Long Form Certificate available on a 5–7 business day turnaround
Request a quote, or inspect internal straight-sided splines with the Straight-Sided Spline Plug Gage.

Specifications
| Gage Type | Spline ring gage |
|---|---|
| Measurement Mode | GO / NO GO |
| Spline Profile | Straight-sided |
| Diameter Range | 5 mm–500 mm (3/16"–20") |
| Pitch | 180–3 DP / 0.1–25.4 module |
| Helix Angle | Up to 45° |
| Number of Teeth | Up to 550 |
| What It Inspects | External straight-sided splines — functional fit |
| Material | Gage steel 62/63C (HSS or tungsten carbide optional) |
| Hardness | 62–63 HRC |
| Certification | NIST-traceable Certificate of Accuracy included with every gage. |
| Standards | DIN 5482, or customer print |