{"product_id":"mcmaster-97135a230-high-strength-steel-nylon-insert-locknut-pack-of-20-grade-8-zinc-yellow-chromate-plated-3-8-16-thread","title":"McMaster 97135A230 High-Strength Steel Nylon-Insert Locknut, Pack of 20, Grade 8, Zinc Yellow-Chromate Plated, 3\/8\"-16 Thread","description":"\u003cp\u003eVersatile yet economical, these are the most commonly used locknuts. The nylon insert grips the screw to prevent loosening from moderate vibration without damaging threads. However, the insert may become brittle if exposed to high temperatures. These locknuts are reusable a handful of times, but the holding power decreases with each use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHigh-Strength Steel\u003c\/strong\u003e — Rated Grade 8, Grade C, or Class 10, these locknuts are about 25% stronger than medium-strength steel nuts. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eZinc-Yellow-Chromate-Plated Steel\u003c\/strong\u003e — With a more durable finish than clear zinc plating, these nuts are suitable for most wet and outdoor environments. 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