---
product_id: 681944804
title: "T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick"
brand: "moroinriz"
price: "€ 47.36"
currency: EUR
in_stock: true
reviews_count: 8
category: "Moroinriz"
url: https://www.desertcart.it/products/681944804-t-slot-bolts-for-roof-rack-cross-bars-platform-cargo
store_origin: IT
region: Italy
---

# 20x20x4mm square base, fits most T-track rails 304 stainless steel, rust & corrosion resistant M6/M8 threading, multiple bolt lengths T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick

**Brand:** moroinriz
**Price:** € 47.36
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock it down, level up your adventure game!

## Quick Answers

- **What is this?** T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick by moroinriz
- **How much does it cost?** € 47.36 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/681944804-t-slot-bolts-for-roof-rack-cross-bars-platform-cargo)

## 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

- • **Complete Hardware Kit:** Includes lock nuts and washers for a rock-solid hold—ready to upgrade your rooftop gear instantly.
- • **Marine-Grade Durability:** 304 stainless steel construction resists rust and corrosion, perfect for all-weather adventures.
- • **Versatile Mounting Power:** Securely attach bike racks, ski carriers, solar panels, awnings, and more with confidence.
- • **Sleek & Clean Installation:** Low-profile square head design protects your crossbars from scratches and keeps your setup looking sharp.
- • **Universal T-Track Compatibility:** Seamlessly slides into most roof rack T-slots—no drilling, no hassle.

## Overview

These T Slot Bolts are precision-engineered from heavy-duty 304 stainless steel with a 20x20x4mm square base and M6/M8 threading options. Designed for universal compatibility with most roof rack T-track systems, they provide a rust-resistant, corrosion-proof solution to securely mount bike racks, ski carriers, solar panels, and more. Easy to install without drilling, they come as a complete hardware kit including lock nuts and washers, ensuring a durable, scratch-free, and professional rooftop setup for SUVs, RVs, and outdoor enthusiasts.

## 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: Great product, used in Retrax T slots. - These are well made and stainless steel, checked with magnet, black color also, worked well, I would buy again.

## 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 | B0D4ZCSTSC |
| Best Sellers Rank | #10,467 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Bike Car Rack Accessories |
| Brand | moroinriz |
| Color | M8x65mm, 8pk |
| Compatible Groove Diameter | 0.39 Inches |
| Customer Reviews | 4.5 out of 5 stars 297 Reviews |
| Fastener Type | T-Bolt |
| Grade Rating | Grade 304 |
| Head Style | Square |
| Head Type | Square |
| Item Diameter | 8 Millimeters |
| Item Hardness | Grade 5 |
| Manufacturer | moroinriz |
| Manufacturer Grade | Grade 304 |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Screw Head Style | Square |
| Set Screw Thread Type | Metric Coarse |
| Size Name | M8 x 1.25 |
| Thread Class | 2B |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| Unit Count | 8.0 Count |

## Product Details

- **Material:** Stainless Steel
- **Thread Size:** M8
- **Manufacturer Grade:** Grade 304
- **Head Style:** Square
- **Color:** M8x65mm, 8pk

## Images

![T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick - Image 1](https://m.media-amazon.com/images/I/51JXCNBWyRL.jpg)
![T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick - Image 2](https://m.media-amazon.com/images/I/610qihQXfUL.jpg)
![T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick - Image 3](https://m.media-amazon.com/images/I/61ioIKCcq0L.jpg)
![T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick - Image 4](https://m.media-amazon.com/images/I/710iEyS80oL.jpg)
![T Slot Bolts for Roof Rack Cross Bars, Platform, Cargo Basket, Stainless Square T Track Bolt Adapter to Secure Bike/Ski/Kayak Rack, Solar Panel, Awning, 4mm Thick - Image 5](https://m.media-amazon.com/images/I/718iMJ6vicL.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.

### ⭐⭐⭐⭐⭐ Great product, used in Retrax T slots.
*by A***R on September 15, 2025*

These are well made and stainless steel, checked with magnet, black color also, worked well, I would buy again.

### ⭐⭐⭐⭐⭐ Awesome hardware
*by M***E on September 3, 2025*

Works great, used to secure a Thule ski box. I also purchased thumb screws so I don’t have to use a wrench to tighten hardware.

## 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
- 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 Italy*
*Store origin: IT*
*Last updated: 2026-01-25*