These are custom made OpenBuilds Tee Nuts.  They were designed to slide into slots with less hassle than the standard rectangular tee nuts.  They have angled corners to allow for a smooth transition. OpenBuilds Tee Nuts fit V-Slot and most aluminum tee slot extrusion that has at least a 10mm wide tee nut slot. Packs of 25 Low Carbon Steel M5 Thread Size   

This handy little locknut is included with each of our Wheel Kits.  They are super affordable and will work with M5 screws. For your convenice these are sold individually, so add as many as you need.  Download the model file below to use in your project!   Other CAD file formats can be found here

These mounting hubs are awesome for mounting to practicaly anything to gain a strong connection (4 M5 Screws) to a set screw locking shaft hub. Since the spacing between the holes are at 20mm (standard spacing for V-Slot tracks) this opens a whole new level of mounting that will allow for configurations like never before! Check the pictures (there are lot's of them) to see a few examples and download the model to see how you can incorporate this unique locking hub in your next build. Aluminum Black Anodized L-21 x W-21x H-6 4 Tapped M5 Mounting Holes  2 M5 Set Screws (included) Download Examples Model  

These are post insertion Tee Nuts that can be added anywhere along the slot of V-Slot or compatible extrusions. They are nice to have on hand because they do not need to be placed in from the ends of the extrusion.  They can be easily placed in later in the building process. Drop in Tee Nuts are installed by placing them in the V-Slot and then once the screw is engaged, it will turn them and engage them into the bottom side of the V Track.  Once tightened the teeth grab into the anodized coating, to ensure a no-slip connection.  Product Specifications Fits M5 Screw 6 x 10.3 x 4.4mm

Use this Double Tee Nut to connect V-Slot and most T-Slot Extrusions end to end or use it on any connection point that has 20mm spacing (for example, the Actuator End Caps). You can use these double tee nuts just like you would a standard tee nut to make any connection that you need. Double tee nuts are compatible with any 5mm screw or attach the double tee nut with 2 5mm set screws (not included) to allow for a nice low profile solution that will let the OpenBuilds Wheels transition from one extrusion to the next.

This high quality 8mm Acme Anti-Backlash Nut Block is a great choice for many projects requiring lead screw linear motion. The pitch and diameter are a perfect combination of high torque and speed. This screw fits the bill for most machine designs and has quickly become a standard on OpenBuilds builders. It serves more than one purpose in that it can be mounted to the bottom of a 3mm/1/8" plate utilizing M5 nylon insert nuts and 15mm M5 screws or can also be mounted directly to V-Slot utilizing two channels with 15mm M5 low profile screws and two tee nuts.  These mounting choices allow for a host of modular machine applications.  You can mount this block along any length of V-Slot to create your linear motion. To use the the Anti-Backlash Nut Block - Turn the set screw just enough to take out any play in the Nut Block. Then screw the lock nut on the top of the set screw to lock the set screw in place. Package includes: (1) Set screw (1) Low profile locking nut (1) Anti-backlash Nut Block Tr8*8(p2) Metric Acme Tap Pitch is 2mm starts is 4 Lead is 8mm Mounting hole spacing 20mm Use in conjuntion with the 8mm Metric Lead Screw   DOWNLOAD EXAMPLE MODELS/DRAWINGS Be sure to check out all the pictures for connection examples.  

This high quality aluminum flexible coupling can be used to connect your stepper motor to your lead screw.  The flexibility will help with any misalignment there might be. Material:  AluminumShaft: 1/4" X 8mmLength:  Length: 25mm (.98")OD: Outer Diameter: 20mm (.79")

These Tee Nuts have a spring loaded ball that prevents unwanted movement of the nut in the slot.  This allows for inserting nuts in the verticle position as they will not slide from gravity.   They are highly desirable to allow for adding tee nuts in a pre-built design.   These tee nuts work by being angled and inserted under the lip of the extrusion slot.M5 tap. 

This 8mm Acme Nut Block is a great choice for many projects requiring lead screw linear motion. It serves more than one purpose in that it can be mounted to the bottom of a 3mm/1/8" plate utilizing M5 nylon insert nuts and 15mm M5 screws or can also be mounted directly to V-Slot utilizing two channels with 15mm M5 low profile screws and two tee nuts.  These mounting choices allow for a host of modular machine applications.  You can mount this block along any length of V-Slot to create your linear motion. Tr8*8(p2) Metric Acme Tap Pitch is 2mm starts is 4 Lead is 8mm Use in conjuntion with the 8mm Metric Lead Screw Lead Screw exmaple models Example 1 - Example 2 Be sure to check out all the pictures for connection examples.  

This V-Slot Acme Nut Plate is a perfect fit for any integrated acme screw transmission project.  It can fit into the hollow inserts of 20x40, 20x60 and 20x80 V-Slot.   You can use the OpenBuilds self tapping screws to mount these into the end holes of V-Slot. Many new and exciting projects are sure to surface using this integrated transmission component! Tr8*8(p2) Metric Acme Tap Pitch is 2mm starts is 4 Lead is 8mm Use in conjuntion with the 8mm Metric Lead Screw Lead Screw exmaple models Example 1 - Example 2 NOTE: The Nut Block can be very tight to ensure that there is little play. So you may need to 'seat' the Nut Block so that it run smoothly. Please see this example video that shows how to seat the nuty block using a cordless drill.

This high quality aluminum flexible coupling can be used to connect your stepper motor to your lead screw.  The flexibility will help with any misalignment there might be. Material:  AluminumShaft: 5mm x 6mmLength:  Length: 25mm (.98")OD: Outer Diameter: 20mm (.79") Lead Screw example build models Example 1 - Example 2

This high quality aluminum flexible coupling can be used to connect your stepper motor to your lead screw.  The flexibility will help with any misalignment there might be. Material:  AluminumShaft: 5mm X 8mmLength: 25mm (.98")Outer Diameter: 20mm (.79") Lead Screw exmaple build models Example 1 - Example 2

This precision trapezoidal (metric) lead screws pitch and diameter are a perfect combination of high torque and speed. This screw fits the bill for most machine designs and will quickly become a standard on OpenBuilds. Equipped with a large diameter that helps eliminate whipping and a high pitch which provides a quick 8mm translation for every revolution on the screw.  It's a great power transmition choice for your next build. Tr8*8-4 Lead Screw Diameter ∅ 8 (mm) Pitch 2 (mm) Lead 8 (mm) Stainless Steel An example steps settings for your control software would be 200 steps per millimeter if you are running your steppers at 1/8 step mode. To calulate the steps for your control software have a look at these handy steps calculators      Lead Screw Lengths Actual lengths have been extended to allow for different connnection points. 290mm 540mm 1040mm   Please Note: The leads have a very slight larger diameter then the ID of the bearings. It is a very small difference and insures that the bearing has no to little axial play once the lead is inside.  You will want to take very fine sand paper (like 220 grit) and sand the ends of the Lead Screw about 2” in from each end to allow your bearing a nice fit to slip onto the ends of the lead. Use with the V-Slot Nut Plate and Nut Block  Also related parts: 8mm Lock Collar and 8mm Shim  Lead Screw example build models Example 1 - Example 2 Please note: Other part models in various formats can be found in the Resources/Parts section of OpenBuilds.com  

These are the knobs we use for the hold down clamps on CNC machines.  They work great to hold your part in place while it's being cut.  They make for a quick, easy adjustment for part swap outs or position changes and require little to no maintenance. Works great with the Flat Washer 1/4" Screw Size 1/4"-20 x 1-1/2" Threaded Steel stud 1-18" DiameterBlack Phenolic Qty. 1 piece  

Adds durable steel threads in wood and particleboard. Great for builds that need hold downs like the Ox.   Thread - 1/4"-20Barrell Length - 7/16"Prongs - 4Zinc Plated To install, press the nut into a drilled hole and hammer in.