---
product_id: 570711663
title: "Learn More"
brand: "moroinriz"
price: "€ 39.14"
currency: EUR
in_stock: true
reviews_count: 13
category: "Moroinriz"
url: https://www.desertcart.com.cy/products/570711663-learn-more
store_origin: CY
region: Cyprus
---

# 20x20x4mm square base precision 304 stainless steel durability M6/M8 threading versatility Learn More

**Brand:** moroinriz
**Price:** € 39.14
**Availability:** ✅ In Stock

## Summary

> 🔩 Lock in your adventure with stainless steel strength!

## Quick Answers

- **What is this?** Learn More by moroinriz
- **How much does it cost?** € 39.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/570711663-learn-more)

## Best For

- moroinriz enthusiasts

## Why This Product

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

## Key Features

- • **Heavy-Duty Secure Fit:** Square head base and lock nuts deliver rock-solid stability for your bike, ski, or kayak racks.
- • **No-Drill Installation:** Clean, scratch-free setup—just slide and secure without damaging your crossbars.
- • **Multi-Use Mounting Solution:** Perfect for roof racks, cargo baskets, solar panels, awnings, and more—upgrade your adventure gear.
- • **Marine-Grade Stainless Steel:** 304 stainless steel construction ensures rust and corrosion resistance in all environments.
- • **Universal T-Track Compatibility:** Seamlessly slides into most T-slot roof racks for effortless mounting.

## Overview

These T Slot Bolts are precision-engineered 304 stainless steel adapters designed to securely fasten bike racks, ski racks, cargo baskets, and more to your vehicle’s T-slot roof rack crossbars. Featuring a 20x20x4mm square base and versatile M6/M8 threading, they offer a no-drill, corrosion-resistant mounting solution that fits most roof rack systems, ensuring durability and a clean, professional look for all your outdoor gear setups.

## Description

CompatibilityPerfect for roof rack with railsFor Whispbar Rail BarFor Whispbar Flush BarFor Whispbar Through Bar (Not Fit for Whispbar HD Bar)For Yakima Jetstream with T slots (Not fit for Yakima CoreBar without T slots)Some roof rack / luggage rack and cargo basket304 Stainless SteelMade of heavy duty 304 stainless steel, it features rust resistant and corrosion resistant in salt water, perfect t-track accessories for camping, touring, travel, and other outdoor activitiesHeavy Duty Rooftop Mounting Hardware Kit for Easy MountingPerfect roof rack replacement parts for your roof bars, just need to slide it into roof bar, simpler to use compared with t track clampsWide ApplicationUtility t-track bolts with matching nuts washer barrel kit for most roof rack systems, roof basket, allow you to attach bike carrier racks, kayak rack, bike carriers, ski holders, snowboard roof rack, side awning, canopy, surfboard roof rack to your roof rack bars with easeSpecItem Name: T Bolts for T TrackMaterial: 304 Stainless SteelThread Size: M6 x 1 (1/4-20), M8 x 1.25 (5/16-18) (Optional)Bolt Length: 30mm, 35mm (Optional)Square Head Base: 0.79 in x 0.79 in x 0.16 in (20mm x 20mm x 4mm)Washer: 0.04 in x 0.47 in (1mm x 12mm)Nut: 0.39 in x 0.2 in (10mm x 5mm)Fit Vehicle: SUV, ATV, UTV, RV, VANMounting Type: Roof Rack Mounting, Cross Bar Mounting, Roof Top Mounting

Review: Solid T track bolts for most/all T rail systems - Fit great in a standard truck bed rack rail system. I tried them in the bed rack system and in my roof top tent system and they work well - apparently the "T" bolt system is universal and should work for any "T" rail system attachment you have. Should. The hardware is not Grade 8, but it's sturdy and I was able to get good grip and tightening on it with no movement using the lock washers.
Review: Attaching Yakima Skybox to a roof platform using the stock Yakima quick release - Everything came and worked as expected. I have a RhinoRack Recon roof platform on my Lexus GX550, and these fit the T-Slots. I used them to attach a Yakima Skybox. However, I wanted to use the existing interior quick attachment mechanism on the Yakima, and the diameter of these bolts were too large to slide through the stock Yakima system. I was able to drill the Yakima pieces to a larger diameter so that the quick releases work with the T-slots on the RhinoRack.

## Features

- Versatile t Track Bolts - this t-track adapter accessory kit is a great solution to attach items firmly to your t track crossbar, compatible with t slot, perfect t-track adapter accessory kit to attach bike rack / ski rack / kayak rack, roof rack awning, solar panel, fishing rod holder, cargo box to roof rack cross bars, roof rack cargo basket, car rooftop platform or side rails, works well with most solar panel mounting brackets
- Technical Specification - the t bolt is made of 304 solid stainless steel, 79 in x 0.79 in x 0.16 in (20mm x 20mm x 4mm) square head base, m6 / m8 threading, 30mm / 35mm / 65mm length
- Easy to Set Up - no drilling, cleaner look, just need to slide it into the t slot of your roof bar, and won't scratch your cross bar, great alternative to roof rack t track clamp*NOTE-please check the dimension of your cross bar rail, this t bolts base is 20mm x 20mm x 4mm (L x W x Thickness)*
- Marine Resistant - stamping t slot accessories, more durable compared with welding parts, made of solid 304 stainless steel, it features rust resistant and corrosion resistant even in salt water, designed for most harsh environment, perfect t track accessories for suv / rv roof top
- What You Will Receive - roof rack mounting hardware kit, include t-bolt with lock nuts and washer, satisfying purchasing experience of your customer is our priority, please feel free to contact us if you have other questions! Thanks for your supporting!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CGB1R63J |
| Best Sellers Rank | #9,329 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Bike Car Rack Accessories |
| Brand | moroinriz |
| Color | M8x30mm,6pk |
| Compatible Groove Diameter | 0.39 Inches |
| Customer Reviews | 4.5 4.5 out of 5 stars (340) |
| Exterior Finish | Stainless Steel |
| Fastener Size | M8 |
| Fastener Type | T-Bolt |
| Finish Types | Stainless Steel |
| Grade Rating | Grade 304 |
| Head Type | Square |
| Item Diameter | 8 Millimeters |
| Item Hardness | Grade 5 |
| Manufacturer | moroinriz |
| Manufacturer Grade | Grade 304 |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | QM-BOL-15 |
| Number of Pieces | 6 |
| Part Number | QM-BOL-15 |
| Screw Head Style | Square |
| Screw Point Style | Square |
| Set Name | T-Bolt Mounting Hardware Kit (6 Pieces) |
| Set Screw Thread Type | Metric |
| Size Name | M8 |
| Thread Class | 3B |
| Thread Coverage | Fully Threaded |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| Unit Count | 6.0 Count |

## Product Details

- **Exterior Finish:** Stainless Steel
- **Head Style:** Square
- **Manufacturer Grade:** Grade 304
- **Material:** Stainless Steel
- **Thread Size:** M8

## Images

![Learn More - Image 1](https://m.media-amazon.com/images/I/71j8Sj58yzL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid T track bolts for most/all T rail systems
*by O***L on June 10, 2025*

Fit great in a standard truck bed rack rail system. I tried them in the bed rack system and in my roof top tent system and they work well - apparently the "T" bolt system is universal and should work for any "T" rail system attachment you have. Should. The hardware is not Grade 8, but it's sturdy and I was able to get good grip and tightening on it with no movement using the lock washers.

### ⭐⭐⭐⭐⭐ Attaching Yakima Skybox to a roof platform using the stock Yakima quick release
*by J***G on February 15, 2026*

Everything came and worked as expected. I have a RhinoRack Recon roof platform on my Lexus GX550, and these fit the T-Slots. I used them to attach a Yakima Skybox. However, I wanted to use the existing interior quick attachment mechanism on the Yakima, and the diameter of these bolts were too large to slide through the stock Yakima system. I was able to drill the Yakima pieces to a larger diameter so that the quick releases work with the T-slots on the RhinoRack.

### ⭐⭐⭐⭐⭐ Excellent quality
*by M***X on January 24, 2026*

Perfect for replacing the screws on my rhino awning. They are exact fit and longer than the ones that came on the package. The color black looks nice and matches my rack. The bag comes with 12 screws with washers and some extra nuts 🔩. I

## Frequently Bought Together

- T Slot Bolts for Thule, Yakima Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick
- T Track Mount Tie Down Anchor for Roof Rack, M8 Heavy Duty Ring Shaped Eye Bolt, Stainless Steel T Bolt Eye Nut Tie Down Rings for Holding Bungee Cord, Ropes, Hooks
- moroinriz T Slot Bolts for Thule, Yakima Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-04-27*