# Fasteners ## Bolts, Nuts, and Rivets ### Bolts Product Page \#10 bots are the best combination of strength, weight, size, and availability in most FRC applications, and for us, it just makes building robots easier. Button Head Cap Screws (BHCS) provide a low-profile hardware solution, while Socket Head Cap Screws (SHCS) provide a stronger, more strip-resistant hex socket with their larger head. The black-oxide coating increases strength and makes the bolts more resistant to corrosion, meaning you’ll never need to replace a bolt due to wear and weather. We also offer #8 bolts to interface with other commonly-used FRC hardware! #### Shoulder Bolts Shoulder Bolts are ideal for creating pivot points and smooth, repeatable motion in FRC mechanisms. Available in both low profile and ultra low profile head options, these bolts are designed to minimize interference while maintaining strong, reliable fastening.

Thread	Shoulder Diameter	Shoulder Length	Head Type
#8-32	6mm	4mm	Ultra Low Profile
#10-32	1/4"	3/8", 7/8", 21/32", 23/32"	Ultra Low Profile
5/16"-18	3/8"	5/16", 3/8"	Low Profile
5/16"-24	3/8"	3/8"	Low Profile

#### #8-32 Bolts \#8-32 bolts are a versatile fastening choice, ideal for mounting lighter components such as sensors, electronics, and small brackets. They offer reliable threading and integrate easily into a wide range of FRC applications, making them a staple for precision assembly and clean wiring setups.

| Length | Head Type | | ------ | --------- | | 0.250" | BHCS | | 0.500" | BHCS | #### #10-32 Bolts \#10-32 bolts are part of our [System Standards ](https://docs.wcproducts.com/welcome/frc-build-system/system-standards)and are one of the most commonly used fastening options in FRC, delivering strong, reliable connections for both structural and mechanical assemblies. Offered in Button Head Cap Screws (BHCS), Socket Head Cap Screws (SHCS), Pan Head Cap Screws (PHCS), and Ultra Low Profile variants, they give teams the flexibility to meet a variety of design needs, from tight-clearance applications to high-strength joints. These bolts are essential for securely mounting brackets, gussets, and components across your robot.

| Length | Head Type | | -------------------------------------------------------------------------------------- | ----------------- | | 0.375" | Ultra Low Profile | | 0.25", 0.5", 1"L, 1.5"L, 2"L, 3"L, 4"L, 5"L | PHCS | | 0.25", 0.375", 0.5", 0.75", 0.875", 1", 1.25", 1.5", 1.75", 2", 2.25", 2.5", 2.75", 3" | BHCS | | 0.25", 0.375", 0.5", 1", 1.5", 1.75", 2", 2.5", 3", 3.5", 4", 4.5", 5" | SHCS | #### Cam Follower WCP Cam Followers are designed around our #10-32 System Standard for seamless integration with Elevator Bearing Blocks and other linear motion systems. Featuring a hardened outer race and precision bearing construction, they deliver smooth, durable, and consistent performance in demanding robot applications. **Available in:** * 0.625" OD Cam Follower (#10-32) (2-Pack)

#### Alignment Pins WCP Alignment Pins deliver reliable, repeatable positioning across the WCP system. Designed to work seamlessly with Tube Plugs, Elevator Blocks, and other structural components, they simplify assembly, improve accuracy, and ensure your robot goes together right every time.

#### Thread Forming Screws WCP Thread Forming Screws create strong, reliable threads without tapping. The 1/4"-20 version is ideal for forming threads in aluminum, while the #2-28 screws are optimized for plastic components, ensuring clean, secure engagement in both materials.

### Nuts Product Page WCP offers a wide selection of nuts designed to pair with common FRC bolt sizes. Whether you're securing structural components, fastening brackets, or assembling subsystems, these nuts provide the reliable holding power needed for a variety of applications throughout your robot. #### Thin Lock Nuts Thin lock nuts are used to secure threaded joints while saving space in tight assemblies. Designed to resist loosening from vibration or torque, they’re ideal for low-profile applications where a standard nut may not fit, while still providing reliable locking performance in high-motion environments.

#### Rivet Nut Rivet nuts are a convenient alternative to traditional nuts, allowing components to be securely fastened without needing access to both sides of the material. Ideal for tubing, sheet metal, and other hollow or hard-to-reach structures, they provide strong, reusable threads in thin or blind assemblies.

#### Heat Set Insert Heat set inserts are perfect for strengthening threaded connections in 3D printed parts. During installation, heat allows the insert to melt into the surrounding plastic, creating a strong mechanical bond. This process significantly improves durability and provides secure, reusable threads for bolts and fasteners.

#### Screw to Expand Insert Screw to Expand inserts offer a reliable way to add threaded connections to 3D printed parts without heat. When a screw is driven into the insert, it expands to create a tight, friction-based fit. The knurled outer surface enhances grip within the plastic, providing strong, secure threads for repeated use.

#### Tube Connecting Nut The Tube Connecting Nut is designed to provide a strong, threaded connection point inside tubing. It offers a simple and affordable way to attach rods, brackets, or other components without welding or specialized inserts. Ideal for structural builds, this nut makes it easy to create modular and adjustable assemblies using standard tubing. {% hint style="info" %} All Tube Connecting Nuts are available in a #10-32 Bore and 1/4"-20 Bore. {% endhint %}

### Rivets Product Page Rivets are the staples of the engineering world. Align two or more parts with matching holes, place a rivet in the holes, and pop the rivet in the rivet gun to fasten the parts together. To remove an installed rivet, just drill straight through it! Our rivets come in: * 5/32" and 3/16" diameters * Grip lengths from 1/32" to 1/2" * Regular and High Strength models #### 5/32" Blind Rivets

| Diameter | Grip Length (Min) | Grip Length (Max) | | -------- | ----------------- | ----------------- | | 5/32" | 0.030" | 0.125" | | 5/32" | 0.125" | 0.188" | | 5/32" | 0.159" | 0.250" | #### 3/16" Blind Rivets

| Diameter | Grip Length (Min) | Grip Length (Max) | | -------- | ----------------- | ----------------- | | 3/16" | 0.090" | 0.159" | | 3/16" | 0.125" | 0.250" | | 3/16" | 0.250" | 0.438" | | 3/16" | 0.375" | 0.500" | | 3/16"\* | 0.188" | 0.438" | \*This option is only available in the High Strength Version ## Nut Strips Product Page Nut Strips are continuous blocks of aluminum threaded on every face that provide users with easy and accessible threaded holes. These Nut Strips provide another way for teams to get creative with their mounting options!

0.375" x 0.375" x 6" L Aluminum Nutstrip

| Size | Threads | Length | | --------------- | ------- | ---------------- | | 0.375" x 0.375" | #10-32 | 3"L, 6"L | | 0.5" x 0.5" | #10-32 | 1.25"L, 3"L, 6"L | | 0.5" x 0.5" | #8-32 | 6"L | ## Clamping Shaft Collars Product Page Axially retain items on shafts with thinner than normal shaft collars. These custom clamping shaft collars are designed specifically for *FIRST* ® Robotics Competition applications where space on an axle is important. Don't feel like dealing with spacers? Throw a shaft collar on there, and hold everything perfectly in place. We've got collars for every common *FIRST* ® Robotics Competition shaft size, including the 8mm CIM output shaft. Tired of hex broaching your own collars? We have collars for hex shaft, as well as standard round shafts.

| Collar | ID | | -------------- | ------------------------------------------------------------------- | | Light Duty | 8mm SplineXS, 8mm Round, 3/8" Round, 3/8" Hex, 1/2" Round, 1/2" Hex | | Heavy Duty | 1/2" Hex | | Shaft Couplers | 1/4" ID to 1/4", 1/2" Hex | ## Retaining Rings Product Page Retaining rings are a lightweight and cost-effective solution for securing components on a shaft. Ideal for applications with limited space, they offer reliable axial retention without the added bulk or weight of shaft collars, making them perfect for efficient and compact designs. * Low profile way to retain shafts * 2mm e-clips best used to retain small radial bearings and other small items * Ease of use Sizes offered: 2mm, 3/8", and 1/2"

## Washers ### Plastic Washers Product Page Plastic washers are a simple and effective solution for spacing components along a shaft or between surfaces. Lightweight and low-friction, they help fine-tune alignment in mechanisms without adding unnecessary weight. Available in black, they may not be flashy, but they get the job done. * Various Thicknesses * Fits 1/2" or 3/8" Hex and Round Shafts Sizes offered for 1/2" and 3/8" Hex: * 1/32", 1/16", 1/8", 1/4", 1/2", 1", 2"

### Metal Washers Product Page Metal washers are used to space and distribute loads for a variety of hardware, including #10 bolts, 1/4"-20 bolts, and 1-1/8" OD bearings. They provide added stability, prevent pull-through, and help ensure precise alignment in structural assemblies. A reliable choice for both mechanical and support applications. #### Steel Flat Washers

| ID | OD | Thickness | | ------------ | ----- | -------------- | | #10 (0.196") | 3/8" | 0.012", 0.031" | | #10 (0.196") | 5/8" | 0.031" | | 1/4" | 3/8" | 0.012", 0.031" | | 1.125" | 1.25" | 0.031" | #### Battery Locking Washers Product Page These washers use a wedge-locking mechanism to secure bolts with tension, preventing them from loosening unintentionally. When the bolt is tightened, the cams on the washers engage with each other and create a wedge-effect, which prevents the bolt from rotating.

## Threadlocker Product Page Manual ### Vibra-TITE ThreadLocker Vibra-Tite Threadlocker is designed to secure threaded fasteners against loosening caused by vibration and shock. It provides reliable locking strength while enabling easy disassembly when required, making it the ideal go to for FRC/FTC. Vibra-Tite can be pre-applied on your bolts to be ready to use when needed. Need to remove a bolt? No worries, bolts with Vibra-Tite don't need threadlocker to be reapplied, simply put the bolt back in and tighten.

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