High Quality mushroom flat head spike drive anchor

† the anchor bolt projection (bp) is appropriate. anchor bolt projection is the height the anchor bolt protrudes above the concrete surface (see fig 1). if the anchor bolts have inadequate projection the pole may not be secured adequately. if the anchor bolt has too much projection the bolts may be subject to unwanted bending stresses and the ...

External general purpose acme thread size table chart there are three classes of general purpose acme threads, 2g, 3g, and 4g each class provides some clearance on all standard size diameters for free movement, and are used in assemblies with the internal thread rigidly fixed and movement of the external thread in a direction perpendicular to its axis limited by its bearing or bearings.

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Step bolts. step bolts are similar to carriage bolts in that they both have a square shoulder and a larger bearing surface. step bolts, however, have a larger and lower-profile with a round head, creating a smooth surface. the larger heads also make it more difficult pull …

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