SimXPro Buttonhead Bolt Pack: Which Fasteners Fit Your Rig?
By SimXPro l Sim Racing Shop | Published: 2026-10-31
Category: Product Reviews
Learn which SimXPro buttonhead bolts suit your sim racing rig. Sizes, lengths, and pack options explained so you can pick the right hardware for 4040 profiles and more.
Quick Answer
Choose your SimXPro buttonhead bolt size based on the profile or component you're mounting, then pick the length that gives enough thread engagement without protruding. The black bolt pack offers M4, M5, M6, and M8 sizes in 12mm, 16mm, or 20mm lengths, sold in packs of 10 or 100.
Why Size and Length Matter
Sim racing rigs use aluminum profiles like 4040, which have slots that accept T-nuts. The bolt size must match the T-nut and the hole in the bracket or component. M8 is common for heavy components like pedal plates or wheel bases, while M6 is often used for accessories and smaller brackets.
Length determines how much thread grips the T-nut. Too short and the bolt won't hold; too long and it may bottom out or protrude. For 4040 profile, a 16mm bolt typically works well when mounting a bracket directly, but check the thickness of what you're mounting.
Trade-Off: Pack Quantity vs. Flexibility
Buying a pack of 100 gives you plenty of spares and lowers per-bolt cost, but you need to be sure of the size and length. A pack of 10 is a good starting point for a specific job or for testing fit before committing to a larger quantity.
If your rig uses multiple sizes, you might want to order a few small packs of different sizes rather than one large pack of a single size.
Frequently Asked Questions
- Which bolt size should I use for 4040 profile?
- For 4040 profile, M8 is a common choice for structural mounts, while M6 suits lighter accessories. Check the T-nut and bracket hole size to confirm compatibility. Always verify the T-nut thread size before ordering.
- How do I choose the right length?
- Measure the thickness of the material you're bolting plus the T-nut depth. Add a few millimeters for thread engagement. For a typical bracket on 4040, 16mm often works, but 20mm may be needed for thicker brackets. When in doubt, choose a longer bolt and use washers or spacers to adjust.
- Should I buy a pack of 10 or 100?
- If you're building a full rig, a pack of 100 ensures you have enough for all mounting points and spares. For a single upgrade or test, a pack of 10 is sufficient. Estimate the number of bolts needed for your project before deciding.
Product Facts
- SimXPro Buttonhead Bolt pack - black: The SimXPro Buttonhead Bolt pack is available in M4, M5, M6, and M8 sizes with lengths of 12mm, 16mm, or 20mm depending on size, and comes in packs of 10 or 100. This range lets you match the bolt to your specific mounting point, whether you need a small M4 for a light bracket or an M8 for a sturdy pedal plate.
SimXPro Buttonhead Bolt pack - black
