About Nuts, Materials, and Finishes
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T-Slotted Framing Fasteners
Screw and nut sets or nuts secure brackets and other accessories to rails.
Drop-in fasteners fit directly into the T-slot to attach components—no need to disassemble your existing structure. However, they form less secure connections than end-feed fasteners because less surface area touches the rail.
For technical drawings and 3-D models, click on a part number.
Self-aligning nuts have a ridge that keeps them centered in the T-slot.
Spring-loaded ball nuts hold themselves in place, so they won’t slide down vertical rails. The ball glides over holes, so they’re easy to reposition.
Offset nuts have a mounting hole close to one end, so you can install them next to corners and rail ends.
For Rail Ht. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Single | Double and Quad | Mounting Hole Location | Thread Size  | Thickness | Color | Material | Pkg. Qty. | Pkg. | |
Self-Aligning Spring-Loaded Ball Nut | |||||||||
| 20mm | 40mm | Offset | M3 | 0.181" | Silver | Zinc-Plated Steel | 4 | 0000000 | 00000 |
Miniature T-Slotted Framing and Fittings
Build test fixtures, prototypes, and other small structures with this miniature version of T-slotted framing and fittings. The framing has continuous T-slots for attaching fittings with the included mounting fasteners.
For technical drawings and 3-D models, click on a part number.
Head
Cap Screw
Fasteners secure brackets and other accessories to rails.
Self-aligning end-feed nuts slide into the end of the rail to attach components. A ridge keeps them centered in the T-slot.
Silver | ||||||||
|---|---|---|---|---|---|---|---|---|
| Fastener Type | Material | For Rail Ht., mm | Thread Size | Lg., mm | Thick., mm | Pkg. Qty. | Pkg. | |
| Button Head Cap Screw | Zinc-Plated Steel | 10 | M3 | 4 | __ | 40 | 0000000 | 000000 |
| Button Head Cap Screw | Zinc-Plated Steel | 10 | M3 | 5 | __ | 40 | 0000000 | 00000 |
| Flat Head Screw | Zinc-Plated Steel | 10 | M3 | 4 | __ | 40 | 0000000 | 00000 |
| Flat Head Screw | Zinc-Plated Steel | 10 | M3 | 5 | __ | 40 | 0000000 | 00000 |
| Self-Aligning End-Feed Nut | 17-4 PH Stainless Steel | 10 | M3 | __ | 2.6 | 20 | 0000000 | 00000 |
Stainless Steel Low-Profile Round-Base Weld Nuts with Projections
Add corrosion-resistant threads to stainless steel sheets, even in spaces with low clearance. These nuts have a short collar to fit in confined spaces. To make welding easier, their collar pilot guides them into the hole and aligns them with the surface. It also shields the threads from weld spatter. The round base acts as a flange to evenly distribute force, while the projections concentrate your weld. This makes room for heat to dissipate, protecting the threads from deforming. These weld nuts stand up to high torque and pull force better than rivet and press-fit nuts, making them the strongest way to add permanent threads to sheet metal. You can also weld them to thick metal surfaces.
For technical drawings and 3-D models, click on a part number.
Thread | Base | Collar | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Dia., mm | Thick., mm | Dia., mm | Ht., mm | No. of Projections | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||
| M3 | 0.5 | 7.8 | 1.5 | 4.3 | 0.8 | 3 | 25 | 000000000 | 00000 |
Steel Low-Profile Round-Base Weld Nuts with Projections
These nuts have a short collar to fit in low-clearance areas. Made of steel, they weld to uncoated steel surfaces with minimal preparation. The collar pilot helps guide them into the hole and aligns them with the surface, making them easier to weld. It also protects the threads from weld spatter. To distribute force evenly, they have a round base that acts as a flange. Projections on the base concentrate your weld to create room for heat to dissipate, protecting threads from deforming. These weld nuts stand up to high torque and pull force better than rivet and press-fit nuts, making them the strongest way to add permanent threads to sheet metal. You can also install them on thick metal surfaces.
For technical drawings and 3-D models, click on a part number.
Thread | Base | Collar | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Dia., mm | Thick., mm | Dia., mm | Ht., mm | No. of Projections | Pkg. Qty. | Pkg. | |
Steel | |||||||||
| M3 | 0.5 | 8 | 1.5 | 4.3 | 0.8 | 3 | 25 | 000000000 | 00000 |
Metric Steel Hex Weld Nuts
The three weld points on these metric hex nuts create a secure hold on a steel surface. Weld them to sheet metal or thick steel surfaces to add strong, permanent threads. They stand up to high torque and pull force better than rivet nuts. Made of uncoated steel, there’s minimal prep required to weld them to uncoated steel surfaces. All have a collar pilot that guides the nut into the hole, holds it in place while welding, and protects the threads from weld spatter.
For technical drawings and 3-D models, click on a part number.
Thread | Collar | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia., mm | Ht., mm | For Hole Dia., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Steel | ||||||||||
| M3 | 0.5 | 7.5 | 2.45 | 4.5 | 0.55 | 4.5 | DIN 929 | 100 | 000000000 | 000000 |
Metric Stainless Steel Hex Weld Nuts
You can weld these nuts to flat and uneven uncoated stainless steel surfaces for a strong permanent hold. They have a collar pilot that assists alignment and prevents welding spatter from getting into threads.
For technical drawings and 3-D models, click on a part number.
Thread | Collar | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia., mm | Ht., mm | For Hole Dia., mm | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||||||
| M3 | 0.5 | 7.5 | 2.5 | 4.5 | 0.55 | 4.5 | DIN 929 | 100 | 000000000 | 000000 |