| 摘要 |
A fastener in combination with a substrate wherein the fastener is affixed to the substrate in a manner that does not damage the substrate. The fastener comprises a barrel having an interior, an exterior, a first end portion, a second end portion, and an intermediate portion. The first end portion of the barrel includes a flange. The exterior of the barrel proximate the flange includes a gripping portion with a spline having at least 12 teeth. The interior of the barrel proximate the second end portion of the barrel includes a counterbore. The interior of the barrel proximate the intermediate portion is threaded. The second end portion of the barrel is flared. The substrate includes a cylindrically shaped bore extending therethrough. The barrel of the fastener partially resides in the bore of the substrate and the 12-toothed spline on the exterior of the barrel of the fastener engages the bore of the substrate and surrounding material with minimal deformation. |
