Nylon Insert Locknuts
Rettig’s Industrial Supplies first opened its doors in 1888. We grow with your success, and we are committed to carrying or sourcing the high-quality industrial components your business needs to conduct efficient operations. All orders ship within twenty-four business hours or less to get you back to work as soon as possible. We strive to save you time, money, and stress by being your one-stop industrial shop.
Nylon insert locknuts, also known as nyloc nuts, are a go-to fastening solution when you need reliable, vibration-resistant performance across a wide range of industries. These versatile locknuts feature a non-metallic nylon collar inserted at the top of the nut, which deforms over the mating thread during installation. This creates resistant torque that prevents loosening from vibration, shock, or dynamic loads—without damaging the bolt threads.
Nylon insert locknuts are commonly used in automotive, aerospace, electronics, HVAC systems, industrial machinery, and household appliance assemblies, where secure fastening and reusability are essential. While not recommended for high-temperature environments (above ~250°F or 120°C), they excel in standard and low-heat settings where metal locknuts might be excessive.
Types & Grades:
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Standard Hex Nylon Insert Locknuts – The most common type, available in low and full height versions.
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Flange Nylon Insert Locknuts – Include an integrated washer-like flange for better load distribution.
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Thin Pattern Locknuts – Ideal for space-restricted assemblies.
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Grade 2, Grade 5, Grade 8 (Inch sizes) – Varying levels of strength based on application load.
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Class 6, 8.8, 10.9 (Metric sizes) – For metric-grade performance and tensile strength.
Specifications:
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Materials: Carbon steel, stainless steel (18-8, 316), brass
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Finishes: Zinc Cr3, black oxide, cadmium, and others
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Thread Types: UNC/UNF (inch) and metric coarse/fine
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Sizes: Inch (#4-40 to 1"-8+) and Metric (M3 to M30+)
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Standards: ASME B18.16.6, DIN 985, ISO 10511
When you need a cost-effective, easy-to-install, and reusable locking nut, nylon insert locknuts deliver reliable performance and peace of mind.
Need help picking the right size or material for your project? Reach out to our team for expert advice and options!