{"title":"Spline Ring Gages","description":"\u003cp\u003eSpline ring gages inspect an external spline — the form cut onto a shaft, stub shaft or coupling end. The ring checks the effective fit of the complete form, confirming the shaft will assemble into its mating hub at the specified class of fit.\u003c\/p\u003e\n\n\u003ch2\u003eSpline forms we supply\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInvolute\u003c\/strong\u003e — curved-flank form used across most power-transmission splines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelical\u003c\/strong\u003e — involute form cut at a helix angle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStraight-sided\u003c\/strong\u003e — parallel flanks for heavy-duty and legacy designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSerration\u003c\/strong\u003e — fine-pitch vee form for shallow, high-count applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eMade to your print\u003c\/h2\u003e\n\u003cp\u003eEvery spline ring gage is made to order. Provide the number of teeth, pitch, pressure angle, class of fit and length of engagement — or simply send the print — and we will quote it. Final inspection is completed in an environmentally controlled ISO\/IEC 17025 accredited laboratory. Plug gages for the mating internal spline are on the \u003ca href=\"\/collections\/spline-plug-gages\"\u003eSpline Plug Gages\u003c\/a\u003e page.\u003c\/p\u003e","products":[{"product_id":"involute-spline-ring-gage","title":"Involute Spline Ring Gage","description":"\u003cp\u003eWESTport involute spline ring gages inspect \u003cstrong\u003eexternal splined shafts\u003c\/strong\u003e for full-form composite error and functional diameter, confirming the shaft mates correctly with its internal spline.\u003c\/p\u003e\n\u003ch2\u003eStandards \u0026amp; setup\u003c\/h2\u003e\n\u003cp\u003eManufactured to \u003cstrong\u003eANSI B92.1\u003c\/strong\u003e, \u003cstrong\u003eANSI B92.2M\u003c\/strong\u003e, \u003cstrong\u003eISO 4156\u003c\/strong\u003e, \u003cstrong\u003eDIN 5480\u003c\/strong\u003e, and related involute standards, or to your print. Compatible with \u003ca href=\"\/products\/taper-master-plug-gage\"\u003etaper master plug gages\u003c\/a\u003e for setup and verification.\u003c\/p\u003e\n\u003ch2\u003eCertification \u0026amp; quality\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned, ground, and hand lapped in-house for accuracy and long service life\u003c\/li\u003e\n\u003cli\u003eCertificate of Accuracy, NIST-traceable — included with every gage\u003c\/li\u003e\n\u003cli\u003eCalibrated in our ISO\/IEC 17025 accredited laboratory; Long Form Certificate available on a 5–7 business day turnaround\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/express-gage-quote\"\u003eRequest a quote\u003c\/a\u003e, or inspect internal bores with the \u003ca href=\"\/products\/involute-spline-plug-gage\"\u003eInvolute Spline Plug Gage\u003c\/a\u003e.\u003c\/p\u003e","brand":"WESTport","offers":[{"title":"Default Title","offer_id":51043424337956,"sku":null,"price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/Involute_Spline_Ring_Gage_2.png?v=1785868778"},{"product_id":"straight-sided-spline-ring-gage","title":"Straight-Sided Spline Ring Gage","description":"\u003cp\u003eWESTport straight-sided spline ring gages inspect \u003cstrong\u003eexternal straight-sided splined shafts\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003ch2\u003eStandards \u0026amp; setup\u003c\/h2\u003e\n\u003cp\u003eBuilt to the straight-sided standard called out on your print, such as \u003cstrong\u003eDIN 5482\u003c\/strong\u003e, or to your drawing. Straight-sided gages are \u003cstrong\u003enot interchangeable with involute spline gages\u003c\/strong\u003e — confirm the spline design on the drawing before ordering. Compatible with \u003ca href=\"\/products\/taper-master-plug-gage\"\u003etaper master plug gages\u003c\/a\u003e for setup and verification.\u003c\/p\u003e\n\u003ch2\u003eCertification \u0026amp; quality\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned, ground, and hand lapped in-house for accuracy and long service life\u003c\/li\u003e\n\u003cli\u003eCertificate of Accuracy, NIST-traceable — included with every gage\u003c\/li\u003e\n\u003cli\u003eCalibrated in our ISO\/IEC 17025 accredited laboratory; Long Form Certificate available on a 5–7 business day turnaround\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/express-gage-quote\"\u003eRequest a quote\u003c\/a\u003e, or inspect internal straight-sided splines with the \u003ca href=\"\/products\/straight-sided-spline-plug-gage\"\u003eStraight-Sided Spline Plug Gage\u003c\/a\u003e.\u003c\/p\u003e","brand":"WESTport","offers":[{"title":"Default Title","offer_id":51203952574500,"sku":null,"price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/Straight-Sided_and_Serration_Spline_Ring_Gage.png?v=1785868777"},{"product_id":"serration-ring-gage","title":"Serration Spline Ring Gage","description":"\u003cp\u003eWESTport serration ring gages inspect \u003cstrong\u003eexternal serrations\u003c\/strong\u003e on shafts and fittings, confirming that the serrated form will engage its mating component correctly. Serrations use multiple equally spaced teeth for positive engagement, and the ring gage verifies the whole form in one functional check.\u003c\/p\u003e\n\u003ch2\u003eStandards \u0026amp; setup\u003c\/h2\u003e\n\u003cp\u003eBuilt to \u003cstrong\u003eSAE J498\u003c\/strong\u003e and DIN serration standards, or to your drawing. Provide the engineering specification, number of teeth, tooth dimensions and class of fit. Compatible with \u003ca href=\"\/products\/taper-master-plug-gage\"\u003etaper master plug gages\u003c\/a\u003e for setup, and with \u003ca href=\"\/products\/spline-master-gear\"\u003espline master gears\u003c\/a\u003e where a functional master is required.\u003c\/p\u003e\n\u003ch2\u003eCertification \u0026amp; quality\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned, ground, and hand lapped in-house for accuracy and long service life\u003c\/li\u003e\n\u003cli\u003eCertificate of Accuracy, NIST-traceable — included with every gage\u003c\/li\u003e\n\u003cli\u003eCalibrated in our ISO\/IEC 17025 accredited laboratory; Long Form Certificate available on a 5–7 business day turnaround\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/express-gage-quote\"\u003eRequest a quote\u003c\/a\u003e, or inspect internal serrations with the \u003ca href=\"\/products\/serration-spline-plug-gage\"\u003eSerration Spline Plug Gage\u003c\/a\u003e.\u003c\/p\u003e","brand":"WESTport","offers":[{"title":"Default Title","offer_id":51203952934948,"sku":null,"price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/Serration_Spline_Ring_Gage.png?v=1785868773"},{"product_id":"helical-spline-ring-gage","title":"Helical Spline Ring Gage","description":"\u003cp\u003eWESTport helical spline ring gages inspect \u003cstrong\u003eexternal helical splines\u003c\/strong\u003e — teeth that follow a helix around the shaft rather than running straight along it. Each gage is manufactured for the specific helix angle and spline specification of the part being inspected.\u003c\/p\u003e\n\u003ch2\u003eStandards \u0026amp; setup\u003c\/h2\u003e\n\u003cp\u003eManufactured to \u003cstrong\u003eANSI B92.1\u003c\/strong\u003e, \u003cstrong\u003eANSI B92.2M\u003c\/strong\u003e, \u003cstrong\u003eISO 4156\u003c\/strong\u003e, \u003cstrong\u003eDIN 5480\u003c\/strong\u003e and related standards, or to your print. Because the gage is cut to the part's helix angle, that angle and hand must be specified on the request. Compatible with \u003ca href=\"\/products\/taper-master-plug-gage\"\u003etaper master plug gages\u003c\/a\u003e for setup and verification.\u003c\/p\u003e\n\u003ch2\u003eCertification \u0026amp; quality\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned, ground, and hand lapped in-house for accuracy and long service life\u003c\/li\u003e\n\u003cli\u003eCertificate of Accuracy, NIST-traceable — included with every gage\u003c\/li\u003e\n\u003cli\u003eCalibrated in our ISO\/IEC 17025 accredited laboratory; Long Form Certificate available on a 5–7 business day turnaround\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/express-gage-quote\"\u003eRequest a quote\u003c\/a\u003e, or inspect internal helical splines with the \u003ca href=\"\/products\/helical-spline-plug-gage\"\u003eHelical Spline Plug Gage\u003c\/a\u003e.\u003c\/p\u003e","brand":"WESTport","offers":[{"title":"Default Title","offer_id":51203953066020,"sku":null,"price":0.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/files\/Helical_Spline_Ring_Gage.png?v=1785868771"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2546\/6268\/collections\/83fda24683d6cb4cc82cec8d75df398d.jpg?v=1786641879","url":"https:\/\/westportcorp.com\/collections\/spline-ring-gages.oembed","provider":"WESTport","version":"1.0","type":"link"}