When working with thin sheet metal, finding a fastening solution that provides durable, load-bearing threads without compromising material strength can be challenging. Self-clinching nuts are designed to solve this problem. Installed through a simple pressing process, these nuts become a permanent part of the panel, offering a cost-effective and reliable alternative to tapping threads in thin materials.

In Part 1: Self-Clinching Studs, we explored how self-clinching studs provide secure, permanent threads in thin sheet applications. Next, we’ll dive into self-clinching nuts—their types, materials, and how they provide strong, reusable threads for a wide range of designs.

Self-Clinching Nuts

Self-clinching nuts, available in carbon steel and stainless steel, provide strong, load-bearing threads for sheet metal and thin metal assemblies.

Thread Sizes

• Unified

• Metric

Material

• 300 Series Stainless Steel

• Heat-Treated Steel

Finish

• Passivated

• Zinc Clear

Self-Clinching Flush Nuts

Self-clinching flush nuts are ideal where strong, reusable threads are required in thin sheets. These nuts provide a fastener option that sits flush in the panel, eliminating the need for tapping after installation.

Thread Sizes

• Unified

• Metric

Material

• 300 Series Stainless Steel

Finish

• Passivated

Self-Clinching Blind Press Nuts

Self-clinching blind press nuts offer an excellent design solution for assemblies requiring protection from foreign matter. They can be installed into panels as thin as 0.040” (1 mm). Their configuration limits the mating screw’s penetration into the assembly, preventing interference within the design and protecting sensitive components such as electronic circuitry.

Thread Sizes

• Unified

• Metric

Material

• Heat-Treated Steel

• 300 Series Stainless Steel

Finish

• Zinc Clear

• Passivated

Self-Clinching Miniature Self-Locking Nuts

Miniature self-clinching fasteners are ideal for assemblies with limited space. They provide strong, reusable threads in thin sheets without taking up much room. These fasteners offer a low-cost solution and are easily installed using a standard insertion press. Once the knurled design of the clinch profile is embedded and flush with the panel, the installation is complete—ensuring a secure fit and eliminating the risk of loose hardware.

Thread Type

• Unified

• Metric

Material

• 300 Series Stainless Steel

Finish

• Passivated

• Black Dry Film Lubricant

Self-Clinching Floating and Locking Floating Nuts

Self-clinching floating nuts are ideal for applications where mating misalignment is possible.

• Floating nuts allow for a misalignment of up to 0.030” (0.76 mm).

• In designs such as large electronic cabinets with hinged doors, floating clinch nuts compensate for hole misalignment between the cabinet and door.

• These fasteners consist of an outer body and an inner nut that “floats” to accommodate misalignment, ensuring proper assembly.

Thread Type

• Metric

• Unified

Material
Self-Clinching Floating Nuts

• Heat-Treated Steel

• 300 Series Stainless Steel

Self-Clinching Locking Floating Nuts

• Steel Body / Stainless Nut

• Stainless Body / Stainless Nut

• Heat-Treated 400 Series Stainless Steel

Finish

• Zinc Clear

• Passivated

• Black Dry Film Lubricant (Locking Nut Option)

Self-Clinching Hex Nuts

Self-clinching hex nuts—also called Kal nuts—are designed for metal assemblies requiring strong, reusable threads. They provide internal threads in sheet metal as thin as 1 mm and are suitable for ductile materials such as steel, aluminum, or copper panels (Rockwell Hardness HRB-80 or less).

Thread Type

• Metric

Material

• Heat-Treated Carbon Steel

Finish

• Clear Zinc

Self-Clinching Top Collar Lock Nuts

Self-clinching top collar nylon locking nuts provide a low-cost, repeatable locking solution for thin metal panels. The nylon insert offers reliable reusability and minimizes thread damage on the mating screw. Designed for use in panels as thin as 0.040” (1 mm), these nuts become an integral part of the chassis when installed correctly. Proper installation requires the fastener to be harder than the panel material and used in ductile materials such as steel, aluminum, or copper.

Thread Type

• Unified

• Metric

Material

• Heat-Treated Steel

• 300 Series Stainless Steel

Finish

• Passivated

• Zinc Clear

Self-Clinching Locking Nuts

Self-clinching locking nuts provide a cost-effective solution for achieving repeat locking torque in thin metal panels. The locking design offers excellent reusability while minimizing potential thread damage on the mating screw. These nuts provide secure locking threads in panels as thin as 0.040” (1 mm).

Thread Type

• Unified

• Metric

Material

• 300 Series Stainless Steel

• Aluminum 7076-T6

• Heat-Treated Steel

Finish

• Black Dry Film Lubricant

• Plain

Self-Clinching Aluminum Nuts

Self-clinching aluminum nuts are ideal when strength, reusability, and weight reduction are critical. They provide strong threads for aluminum assemblies where weight is a primary consideration.

Thread Type

• Unified

• Metric

Material

• Aluminum 2024-T4

Self-Clinching Heavy-Duty Steel Nuts

Self-clinching heavy-duty nuts provide superior push-out and torque-out values in thin panels. Their larger profile enables strong, reusable threads in thin sheets at a very low installed cost.

Thread Type

• Unified

• Metric

Material

• Non–Heat-Treated Steel

• Heat-Treated Steel

Finish

• Zinc Clear

Reliable Fastening for Every Application

From electronics to heavy-duty industrial equipment, self-clinching nuts deliver the durability and performance engineers need in thin sheet metal applications. Their versatility, strength, and ease of installation make them a go-to solution for manufacturers across industries.