Threaded Fastener Grips for Bolt and Nut Tensile Testing

Description

Threaded fastener grips are used for axial tension testing of bolts, screws, studs, and nuts. Instead of clamping the specimen externally, these fixtures use threaded adapters or holders that engage directly with the part’s threads. This setup applies load through the fastener in a way that reflects how it is used in service.

These grips are used to evaluate tensile strength, yield characteristics, and proof load requirements for fasteners in accordance with standards such as ASTM F606. In proof load testing, a nut is installed on a hardened threaded mandrel and loaded to a specified tension to confirm thread integrity and load-bearing capability without failure. Interchangeable threaded inserts are available to match different thread sizes.

Threaded fastener grips are used in automotive, aerospace, construction, and mechanical testing environments. They are manufactured from high-strength steel to support elevated load capacities, often exceeding 100 kN. These grips provide consistent test alignment and measurable data for quality control and certification of structural and mechanical fasteners.

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