Nuts Available at South Coast Fasteners

Nuts Offered at South Coast Fasteners

Non-Serrated Nuts

Non-serrated nuts, sometimes called plain nuts, feature smooth bearing surfaces with no locking ridges or serrations. They are used where vibration is not a concern and where adjustments or disassembly may be required later. These nuts offer reliable performance in assemblies such as enclosures, equipment housings, and fixtures where simple clamping strength and ease of installation are the priority. Their clean surface ensures consistent torque without galling or surface wear.

Finished Hex Nuts

Finished hex nuts are the industry’s most widely used nut, offering strength, accessibility, and a finished appearance. The six-sided profile allows for easy wrench engagement, even torque distribution, and dependable load retention. Common in machinery, construction, and automotive applications, finished hex nuts deliver strong fastening where vibration and movement are moderate. Their polished finish also makes them ideal for visible or decorative installations.

Structural and Heavy Hex Nuts

Structural and heavy hex nuts are designed for maximum load-bearing strength in high-stress connections. With a thicker body and larger flats than standard hex nuts, they resist deformation and maintain thread integrity under heavy torque. These nuts are paired with structural bolts in steel framing, bridgework, and heavy machinery. Their robust geometry ensures secure clamping under vibration, shock, and cyclical load conditions.

Hex Jam Nuts

Hex jam nuts are half the height of standard hex nuts and often used as a secondary locknut in critical assemblies. When tightened against another nut, they create a friction lock that resists loosening from vibration or thermal cycling. They’re ideal for use in automotive assemblies, mechanical linkages, and tight installations where space is limited. Their compact profile allows secure locking without adding unnecessary height to threaded joints.

Machine Screw Nuts

Machine screw nuts are smaller, fine-threaded nuts designed to mate with machine screws in light-duty assemblies. They’re used extensively in electronics, appliances, and precision equipment where strength and compactness are both required. These nuts ensure secure thread engagement in thin materials or confined spaces and deliver smooth fastening without cross-threading or galling.

Nylon Insert Locknuts

Nylon insert locknuts, also known as nyloc nuts, include a nylon collar that grips the bolt threads tightly to prevent loosening from vibration or movement. The nylon insert maintains consistent friction over repeated use and temperature changes. Common in machinery, vehicles, and industrial equipment, they’re ideal for assemblies that experience vibration, rotation, or constant mechanical stress.

All-Metal Locknuts

All-metal locknuts achieve thread locking through a mechanical deformation of the nut’s metal body rather than a nylon insert. This makes them ideal for high-heat, high-vibration, or chemically aggressive environments. Frequently used in engines, turbines, and industrial machinery, they maintain their locking power under extreme conditions where nylon or composite materials would fail.

Acorn Nuts

Acorn nuts, also known as cap nuts, feature a closed, domed end that protects exposed bolt threads. They prevent thread damage, corrosion, and injury from sharp bolt ends. Often used in automotive restoration, furniture, and decorative hardware, acorn nuts provide a polished finish while also improving safety and durability in visible installations.

Coupling Nuts

Coupling nuts are elongated hexagonal nuts used to join two threaded rods or fasteners together. Their extended body ensures full thread engagement, improving alignment and load distribution across long connections. They are widely used in construction, HVAC systems, and structural frameworks where secure threaded extensions are needed for precise assembly or height adjustment.

Slotted Hex Nuts

Slotted hex nuts, sometimes referred to as castle nuts, include precision-cut slots that align with a drilled hole in the bolt for insertion of a cotter pin or safety wire. This locking method provides positive retention in high-vibration or motion-heavy environments. Slotted hex nuts are standard in automotive, agricultural, and mechanical systems where secure fastening and safety compliance are critical.

Square Nuts

Square nuts have four large flats that resist rounding and provide excellent wrench engagement. Their shape offers more surface contact against the part being fastened, which helps distribute load evenly and reduce surface damage. Common in woodworking, restoration projects, and traditional machinery, square nuts are valued for their durability, simplicity, and classic industrial look.

Tee Nuts

Tee nuts, or pronged nuts, are internally threaded inserts designed to be embedded into wood or composite materials. Their sharp prongs dig into the surface to prevent rotation during tightening, creating a strong, reusable thread within the material. Common in furniture manufacturing, cabinetry, rigging, and stage equipment, tee nuts offer high pull-out resistance and a clean flush finish.

Wing Nuts

Wing nuts feature two wide, flat “wings” for easy hand tightening and removal without tools. They are ideal for temporary or adjustable connections, such as in signage, lighting rigs, and assembly fixtures. The ergonomic design allows quick installation and removal while maintaining dependable clamping force. Wing nuts are widely used in applications where speed, adjustability, and convenience are priorities.

Wheel Nuts

Wheel nuts, also known as lug nuts, are designed to secure wheels to vehicle axles. Their conical seat centers the wheel precisely on the hub, ensuring balanced rotation and even clamping under heavy loads. Wheel nuts are engineered for high torque, vibration, and temperature resistance, making them essential in automotive, trailer, and heavy-equipment applications where safety is paramount.

Axle Nuts

Axle nuts secure rotating components such as hubs, bearings, or wheels to shafts. They are commonly used in vehicles, agricultural machinery, and industrial drives where consistent preload and secure positioning are required. Axle nuts maintain stability under vibration and torque, preventing mechanical loosening during operation.

Speed Nuts

Speed nuts combine a spring clip and nut in one piece, providing self-retaining fastening for quick assembly. They snap easily into place on panels or shafts, eliminating the need for threading tools. Frequently used in automotive manufacturing, appliance assembly, and mass production, speed nuts reduce labor time while maintaining solid retention strength.

Metric Flange Nuts

Metric flange nuts feature a built-in washer face that distributes load evenly across the fastened surface. This integrated flange reduces the chance of pull-through and eliminates the need for a separate washer. The broad surface and available serrated options provide excellent vibration resistance, making them a go-to in automotive, machinery, and industrial systems.

Stainless Hex Nuts

Stainless hex nuts are made from corrosion-resistant stainless steel for long-term strength and appearance. Common grades such as 18-8 and 316 offer protection against rust, chemicals, and moisture, making them suitable for marine, food processing, and outdoor use. These nuts are trusted for structural and mechanical integrity in corrosive or sanitary environments.

Stainless Coupling Nuts

Stainless coupling nuts extend threaded rods or fasteners in environments exposed to moisture, chemicals, or temperature extremes. They provide dependable strength and corrosion resistance for applications in marine systems, construction, HVAC, and utilities. Their polished finish and durability make them ideal for both functional and exposed assemblies.

Stainless Locknuts

Stainless locknuts combine the benefits of stainless steel with locking features that resist loosening from vibration and impact. Used in machinery, transportation, and infrastructure, they maintain long-term security in demanding environments where rust resistance and vibration control are equally important.

Stainless Tee Nuts

Stainless tee nuts deliver permanent, rust-resistant threads in wood or composite materials. The stainless construction ensures long-term performance in outdoor, marine, and high-humidity conditions. They’re often used in furniture, decking, and equipment mounting where corrosion protection and structural reliability are required.

Brass Nuts

Brass nuts are corrosion-resistant, conductive, and non-magnetic, making them a preferred choice for plumbing, electrical, and decorative work. They maintain thread integrity in moist or chemical-rich environments while offering a distinctive golden finish. Their softness also prevents thread galling when used with brass or copper bolts.

Silicon Bronze Nuts

Silicon bronze nuts are strong, corrosion-resistant fasteners made from a copper-based alloy. They are the standard choice for marine, architectural, and outdoor structural applications exposed to salt, water, and weather. These nuts combine exceptional strength with a refined, natural patina that develops over time without compromising performance.

Aluminum Nuts

Aluminum nuts provide lightweight strength and natural corrosion resistance. They’re ideal for aerospace, automotive, and electronic applications where reducing overall weight is a priority. Aluminum’s protective oxide layer prevents rust and deterioration while maintaining a sleek, professional finish.