Wedge Tensile Fastener Testing

A Wedge tensile test is an axial test, except that a wedge is placed under the head during the testing. This wedge tensile test is typically done on hex or square head fastener and socket head cap screws. This test is to see if the head of the fastener is capable of sustaining the added stress of the wedge.

Fastener testing allows you to determine the mechanical properties of externally and internally threaded fasteners, washers, direct tension indicators, and rivets. Testing may consist of a machined specimen or a full-size product. The type of fastener testing that will be described below applies to a full-size product testing. Fastener testing is not applicable to all. The head design, shank thickness, and product length can determine if the testing is required of the product.