We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.
🔩 Lock in your ride’s comfort with precision and power!
The ONIPAX Seatpost Binder Bolt Screw is a single-piece, fully threaded M6 x 19mm fastener made from durable Cr-Mo steel. Designed for metal bike frames with seatpost grooves, it features a 15mm Allen key head for easy installation and removal. Manufactured in Taiwan, it offers high shear strength and a secure fit, backed by a 1-year warranty and strong customer satisfaction.
| ASIN | B09BJF2728 |
| Best Sellers Rank | #50,868 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Binding Screws |
| Brand | ONIPAX |
| Compatible Groove Diameter | 0.2 Inches |
| Customer Reviews | 4.5 4.5 out of 5 stars (130) |
| Drive System | External Hex |
| Exterior Finish | Alloy Steel |
| Fastener Size | M6 x 19mm |
| Fastener Type | Socket Head |
| Finish Types | Uncoated (Plain Steel) |
| Head Type | Allen key |
| Item Diameter | 5 Millimeters |
| Item Weight | 10 Grams |
| Manufacturer | ONIPAX |
| Material Type | Cr-Mo Steel |
| Maximum Shear Strength | high |
| Metal Type | Cr-Mo Steel |
| Model | SBS-01 |
| Number of Pieces | 1 |
| Part Number | SBS-01 |
| Screw Head Style | Binding |
| Screw Point Style | Flat Point |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | 19mm |
| Thread Coverage | Fully Threaded |
| UPC | 737655468533 |
| Unit Count | 1.0 Count |
| Warranty Description | 1-year manufacturer warranty |
B**R
Quality Steel, excellent fastener.
My Bike frame's seat post has been secured with a standard nut and bolt for a number of years, but as I was repainting and updating it to modern components, i wanted to get the appropriate hardware for my seat-tube. This seat post binder bolt is an absolutely perfect fit for my 70's steel tube frame, and sits in the seatpost flanges exactly as it is intended to. holds securely, and has not loosened. Things to note that are not specified in the item description: -This binder bolt has BOTH a threaded nut, and a threaded bolt. It was easy to assume this was the case, but the photos do not show that it is in fact a nut and bolt that come together as a seamless junction when fully threaded. The threaded nut side has an external flange on the interior face of the head. This piece is intended to fit in the notch that should be present on your bike; it's purpose is to hold the nut in place so the bolt side can be fastened from one side and not spin when tight. If you do not have a notch, you would need to cut one, or use a different style of fastener. I have a notch, and this bolt allowed be to realize what it was for. Overall, quality metal, smooth threads, and a perfect fit on a 70's road bike with a 25.4mm ID seatpost frame.
N**X
Great for metal frames
This is the thing for a metal frame. Simple, robust, fits the seat tube perfectly
H**R
good clamps
they work great - arrived perfect as described
D**I
The quality was as good as the Sugino bolt that it replaced
This was good quality as good as the Sugino bolt that I lost but later found -I’m keeping this one
S**N
Tight fitting
This will do the job. It's almost impossible to use washers on either side otherwise it won't fit...
R**Z
Pretty Good!!
Works as it should. The 19mm verson of this is pretty universal. The chrome on this has a gray hew so it's not too blingy. If you have an old bike using black components, this can be used.
B**F
Perfect fit
I am restoring a Tange steel-framed Bianchi for my cousin. It was ridiculously heavy so one by one, I am replacing the drivetrain, the cockpit, the wheels, the brakes and everything else on this bike. It came with an unnecessarily clunky seatpost clamp so I got rid of it and ordered this item. It's a perfect fit, the shiny chrome looks simple and elegant and best of all, it's so much lighter than what was on this lovely Bianchi before. All this for under $10!
L**Y
Flimsy
The bolt sheared in half the second time I tightened it.
R**Z
Sé ve de muy buen material ojalá que sea así sí lo recomiendo
H**R
good
Trustpilot
2 months ago
2 days ago