BoltHold SP58-58 Asphalt Anchor, 6-PACK

NOTE: The zinc variant expected availability is August 1, 2026. BoltHold SP58 is a heavy duty asphalt anchor rated at 5,000 lbs. pull (at 3" asphalt thickness). The 10" long anchor is designed to mount speed bumps and kerbs directly to asphalt surfaces. The anchor incorporates a 5/8"-11 UNC (coarse) female thread. The thread of the bolt inside the anchor should not exceed 4". The anchor installations requires a 1.5" hole 10" deep and the use of our EPX2 or E grout. A 2" welded washer at the top of the anchor prevents the anchor from dropping below the surface. The SP58 anchors are mounted flush with the surface of the roadway, so that attached devices such as speed bumps can be removed without leaving dangerous screws or protrusions on the roadway. The SP58-58 is a set of 6 anchors, each pre-installed with a bolt and a washer.