Steel Nylon Insert Lock Nuts with Black Phosphate Coating

Grade C Nuts – Comparable to SAE Grade 5 Bolts

Our Steel Nylon Insert Lock Nuts with Black Phosphate Coating are designed for heavy-duty applications requiring a secure and vibration-resistant fastening solution. Made from high-quality Grade C steel (comparable to SAE Grade 5), these nuts are ideal for heavy construction and industrial use. The black phosphate coating provides mild corrosion resistance and a sleek appearance.

Why Choose Our Steel Nylon Insert Lock Nuts?

• Secure Locking Mechanism: Nylon insert prevents loosening due to vibration.
• Heavy-Duty Construction: Grade C steel offers strength suitable for heavy construction.
• Corrosion Resistance: Black phosphate coating provides mild protection against rust.
• Durable Performance: Designed to withstand high stress and heavy loads.
• Easy Identification: Black finish offers a professional look and easy identification.

Ideal Applications

• Heavy Construction Projects
• Industrial Machinery and Equipment
• Automotive and Truck Assembly
• Structural Steel Connections
• Vibration-Prone Environments

Available Sizes

We offer a range of sizes to suit your specific needs:

• 1/4"-20
• 1/4"-28 - Fine
• 5/16"-18
• 5/16"-24 - Fine
• 3/8"-16
• 3/8"-24 - Fine

Note: Nut size corresponds to the screw or bolt size it fits (e.g., a 1/4"-20 nut fits a 1/4"-20 screw).

Detailed Specifications

• Material: Grade C Steel (Comparable to SAE Grade 5)
• Finish: Black Phosphate Coating
• Locking Mechanism: Nylon Insert
• Thread Type: UNC (Unified National Coarse) Threads
• Nut Type: Nylon Insert Lock Nut (Nylock Nut)
• System of Measurement: Inch (Imperial / US)
• Standards Met: ASME B18.16.6

Material Properties

Our steel nylon insert lock nuts with black phosphate coating offer:

• High Strength: Grade C steel provides reliable performance in heavy-duty applications.
• Vibration Resistance: Nylon insert prevents loosening due to vibration and movement.
• Corrosion Resistance: Black phosphate coating offers mild protection against rust.
• Temperature Limitations: Suitable for applications up to 250°F (121°C) due to nylon insert limitations.

Installation Tips

For optimal performance when using steel nylon insert lock nuts:

• Ensure the nut size matches the bolt or screw size.
• Thread the nut onto the bolt by hand to avoid cross-threading.
• Tighten using the appropriate wrench or socket for the hex size.
• Avoid over-tightening to prevent stripping threads or damaging the nylon insert.
• Do not reuse nylon insert lock nuts; replace them if removed.
• Not recommended for high-temperature applications exceeding 250°F (121°C).

Order Yours Today

Secure your heavy-duty projects with our reliable Steel Nylon Insert Lock Nuts with Black Phosphate Coating. Ideal for applications requiring strong, vibration-resistant fastening solutions. Order now and enjoy fast shipping and exceptional customer service!

✔️ Trusted by professionals in construction, industrial, and automotive sectors

✔️ High-quality Grade C steel for strength and durability

✔️ Wide range of sizes to fit your needs