Female threads can be reinforced by using an insert
Keyed female-thread reinforcing inserts are available. The keys mechanically prevent rotation and have no risk of falling out. These high-strength stainless steel integrated types can be used for firm fastening or in areas where bolts are frequently fastened and removed. Ideal for reinforcing female threads in light metals, castings, or resin, as well as for repairing damaged female threading.
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