“Bolt Testing” generally refers to using Skidmore-Wilhelm hydraulic load cells, including HS, MZ, S, and other models, to measure fastener performance through:

• Pre-Installation Verification (PIV) Testing and Rotational Capacity (ROCAP) Testing of structural fasteners per AISC/RCSC specifications.
• General fastener testing to establish torque/tension relationships.
• Testing components including, but not limited to, Hex Bolts, Tension Control Bolts, Anchor Bolts, Studs, Lock Nuts, and Direct Tension Indicating Washers.

Skidmore Wilhelm’s hydraulic tension calibrator, also known as a bolt tension calibrator, has been the industry standard for testing high-strength bolts since we invented the technology in the 1950s. These units are required for use on steel buildings, bridges, and other structures that use fasteners in tension-critical joints.

Our Skidmore-Wilhelm units can be safely used with hand torque wrenches, impact guns, electric wrenches, and hydraulic wrenches.