News

2023-05-31

The Next Generation of Tension Control Bolts – INF3013™

Tension control bolts have long been a staple for a select group of fabricators and erectors. It has been my task for a number of years to get the word out on TC bolts. The message quite often falls on deaf ears. The industry is very polarized; use them and love them or do not […]

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2022-03-01

PURPOSE OF ROTATIONAL CAPACITY TESTING: THEN AND NOW

Rotational Capacity test, or ROCAP, was originally developed to ensure the presence of lubrication on Hot dip galvanized coated fasteners for structural products. HDG (zinc) on steel fasteners is a sticky coating leading to very high friction being developed during installation. The use of lubricated nuts reduces friction and avoids galling during assembly. The lubricant […]

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2021-05-20

BOLT TIGHTENING METHODS : THE PROS AND CONS

When assembling your product using a bolt and a nut, the process may seem more or less trivial. But is it really? The answer is no! Proper preloading of a bolted connection when required can be a difficult task. Insufficient preload due to an inaccurate tightening method can be a cause of bolted joint failure. […]

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