---
product_id: 382977042
title: "ONIPAX Seatpost Binder Bolt Screw"
brand: "onipax"
price: "$70920"
currency: COP
in_stock: true
reviews_count: 10
category: "Onipax"
url: https://www.desertcart.co/products/382977042-onipax-seatpost-binder-bolt-screw
store_origin: CO
region: Colombia
---

# 5mm Allen key for easy install M6 x 19mm precision fit Cr-Mo steel for max strength ONIPAX Seatpost Binder Bolt Screw

**Brand:** onipax
**Price:** $70920
**Availability:** ✅ In Stock

## Summary

> 🔩 Lock in your ride’s legacy with ONIPAX precision!

## Quick Answers

- **What is this?** ONIPAX Seatpost Binder Bolt Screw by onipax
- **How much does it cost?** $70920 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/382977042-onipax-seatpost-binder-bolt-screw)

## Best For

- onipax enthusiasts

## Why This Product

- Trusted onipax brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Durability:** Crafted from high-grade Cr-Mo steel, built to withstand high shear forces and last through every ride.
- • **Effortless Installation:** 5mm Allen key broached head allows quick, tool-friendly tightening and removal without hassle.
- • **Precision Engineered Fit:** M6 x 19mm size ensures seamless compatibility with vintage and modern seatposts alike.
- • **Secure Dual-Thread Design:** Integrated nut and bolt system locks firmly in place, preventing loosening even on rough terrain.
- • **Timeless Quality, Made in Taiwan:** Proudly manufactured with meticulous craftsmanship, trusted by cycling enthusiasts worldwide.

## Overview

The ONIPAX Seatpost Binder Bolt Screw is a high-strength, fully threaded M6 x 19mm fastener made from premium Cr-Mo steel. Designed for easy installation with a 5mm Allen key, it features a unique dual-thread nut and bolt system that securely clamps seatposts, especially vintage steel frames. Manufactured in Taiwan, this durable binder bolt combines industrial-grade quality with a perfect fit, ensuring your bike’s seatpost stays locked in place ride after ride.

## Description

desertcart.com: ONIPAX Seatpost Binder Bolt Screw : Industrial & Scientific

Review: 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.
Review: 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.

## Features

- Made of Cr-Mo Steel
- Thread:M6, 5mm allen key broached
- Easy installation and removal
- Made in Taiwan. We pride ourselves on product quality. Let us help you if you have any questions, we will be glad to assist you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BJF2728 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #53,087 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Binding Screws |
| Brand | ONIPAX |
| Compatible groove diameter | 0.2 Inches |
| Customer Reviews | 4.6 4.6 out of 5 stars (124) |
| Cutting Diameter | 5 Millimeters |
| Date First Available | July 31, 2021 |
| Exterior Finish | Alloy Steel |
| Fastener Size | M6 x 19mm |
| Fastener Type | Socket Head |
| Finish | Uncoated (Plain Steel) |
| Head Style | Binding |
| Head Type | Allen key |
| Item Diameter | 5 Millimeters |
| Item Weight | 0.16 ounces |
| Item model number | SBS-01 |
| Manufacturer | ONIPAX |
| Material | Cr-Mo Steel |
| Maximum Shear Strength | high |
| Measurement System | Imperial, Metric |
| Metal Type | Cr-Mo Steel |
| Number of Pieces | 1 |
| Part Number | SBS-01 |
| Point Style | Flat Point |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Shape | Cylindrical With Helical Thread |
| Size | 19mm |
| Thread Coverage | Fully Threaded |
| UPC | 737655468533 |

## Product Details

- **Exterior Finish:** Alloy Steel
- **Head Style:** Binding
- **Material:** Cr-Mo Steel
- **Metal Type:** Cr-Mo Steel
- **Point Style:** Flat Point

## Images

![ONIPAX Seatpost Binder Bolt Screw - Image 1](https://m.media-amazon.com/images/I/31frjPMsGOL.jpg)
![ONIPAX Seatpost Binder Bolt Screw - Image 2](https://m.media-amazon.com/images/I/31k4Lwmeb6L.jpg)
![ONIPAX Seatpost Binder Bolt Screw - Image 3](https://m.media-amazon.com/images/I/31oRlZ6g95L.jpg)
![ONIPAX Seatpost Binder Bolt Screw - Image 4](https://m.media-amazon.com/images/I/31pNMjj03XL.jpg)
![ONIPAX Seatpost Binder Bolt Screw - Image 5](https://m.media-amazon.com/images/I/51Je4AihwWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality Steel, excellent fastener.
*by B***R on August 22, 2022*

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.

### ⭐⭐⭐⭐⭐ Pretty Good!!
*by R***Z on March 27, 2025*

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.

### ⭐⭐⭐⭐⭐ Perfect fit
*by B***F on July 2, 2025*

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!

## Frequently Bought Together

- ONIPAX Seatpost Binder Bolt Screw
- Origin8 Pro-Fit Alloy Seat Post
- Kalloy Uno 602 350mm Alloy Seatpost

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-25*