(Qty24) 1 gram Permatex Blue Threadlocker Medium Strength Packets. this listing is for a quantity of 24 1 gram Permatex medium strength blue threadlocker packets. This type of threadlock is most commonly seen in automotive use, and is ideal for fasteners that are subject to large amounts of vibration. This is also ideal for trailer use, for parts such as spring bolts, caliper slider pins, U-bolts, and other types of marine use fasteners
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