---
product_id: 4420034
title: "8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack)"
brand: "80/20"
price: "€ 60.90"
currency: EUR
in_stock: true
reviews_count: 8
category: "80/20"
url: https://www.desertcart.pt/products/4420034-8020-3393-10-series-bolt-combo-1-4-20-x
store_origin: PT
region: Portugal
---

# 0.5 inch bolt length for versatile mounting 1/4-20 thread size precision Black zinc steel finish for durability 8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack)

**Brand:** 80/20
**Price:** € 60.90
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your build with bolts that mean business!

## Quick Answers

- **What is this?** 8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) by 80/20
- **How much does it cost?** € 60.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/4420034-8020-3393-10-series-bolt-combo-1-4-20-x)

## Best For

- 80/20 enthusiasts

## Why This Product

- Trusted 80/20 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Slide-In Economy T-Nuts:** Quick and easy installation with pilot thread projection for extra grip
- • **Universal Compatibility:** Works seamlessly with 1010, 1020, 2020, and other 1.0" 80/20 aluminum extrusions
- • **Durable Black Zinc Steel:** Corrosion-resistant finish built to last in industrial settings
- • **Versatile 0.5 Inch Bolt Length:** Perfectly sized for mounting brackets and plates on 10 Series extrusions
- • **Precision Engineered 1/4-20 Thread:** Ensures secure, reliable fastening every time

## Overview

This 25-pack 8020 10 Series Bolt Combo features 1/4-20 x 0.5 inch button head socket cap screws paired with slide-in economy T-nuts, all crafted from black zinc steel for superior durability and corrosion resistance. Designed for mounting accessories on 1.0" 80/20 aluminum extrusions, these bolts offer precise threading and a versatile length, making them the go-to hardware for professional-grade industrial and DIY projects.

## Description

8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack): Material Handling Equipment: desertcart.com: Industrial & Scientific

Review: Worked great for my roof rack rails - I purchased a roof rack for a Mercedes Sprinter build and it came with similar looking bolts and although it came with 7 cross members, and I was mounting 3 solar panels, they only included 16 bolts with the slider nuts. I ordered this product to have enough to finish and the quality was better then the ones that came with my rack so I used them and saved the ones I already had for back ups. I was pleased with the quality and the length of the screw was a bit shorter but fine for going through the thin metal brackets for the solar panels.
Review: Craft - Perfect. Hold up to my use.

## Features

- Includes 3061 - 1/4 20 bolt x 1/2 long button head socket cap and 3382 - 1/4-20 slide-in economy t-nuts.
- Both the 1/4-20 bolt and t-slot 1/4-20 t-nuts are made out of steel with a black zinc finish.
- This hardware kit is used to mount t slot accessories like brackets or plates to the channel of your 10 Series or 1.0" based 8020 aluminum extrusion. Works with 1010, 1020, 2020, and many others!
- The bolt comes with a 0.428 inch diameter domed button head and a full length thread of 0.5 inch with a 5/32 Allen hex drive. Thread size is 1/4-20.
- The nut measures .443 x .124 x 1 inches long with a centered 1/4-20 thread. It loads from the t slot aluminum extrusion ends and has a pilot thread projection that adds additional threading.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00FDSEOWY |
| Best Sellers Rank | #76,136 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #494 in Socket Head Screws |
| Brand | 80/20 |
| Color | Black |
| Compatible Groove Diameter | 0.25 inches |
| Customer Reviews | 4.6 out of 5 stars 279 Reviews |
| Fastener Type | Button Cap |
| Finish Types | Black Zinc |
| Head Style | Socket Cap |
| Item Diameter | 0.43 inches |
| Item Shape | Round |
| Manufacturer | 80/20 Inc |
| Material | Steel |
| Material Type | Steel |
| Model | OP-48646 |
| Number Of Items | 25 |
| Number of Pieces | 25 |
| Outside Diameter | 0.43 inches |
| Part Number | 3393-25 |
| Screw Head Style | Socket Cap |
| Set Name | 8020 10 Series Bolt Combo (25 Pack) |
| Size | 25 Pack |
| Size Name | 25 Pack |
| Thread Size | 1/4"-20 |
| Unit Count | 25 Count |

## Product Details

- **Brand:** 80/20
- **Color:** Black
- **Fastener Type:** Button Cap
- **Material:** Steel
- **Size:** 25 Pack

## Images

![8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) - Image 1](https://m.media-amazon.com/images/I/51jBV5QvUsL.jpg)
![8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) - Image 2](https://m.media-amazon.com/images/I/51JpWOpL9vL.jpg)
![8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) - Image 3](https://m.media-amazon.com/images/I/51u0gfNykHL.jpg)
![8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) - Image 4](https://m.media-amazon.com/images/I/611npF9FyAL.jpg)
![8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack) - Image 5](https://m.media-amazon.com/images/I/51MduQDc2jL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked great for my roof rack rails
*by D***G on June 30, 2026*

I purchased a roof rack for a Mercedes Sprinter build and it came with similar looking bolts and although it came with 7 cross members, and I was mounting 3 solar panels, they only included 16 bolts with the slider nuts. I ordered this product to have enough to finish and the quality was better then the ones that came with my rack so I used them and saved the ones I already had for back ups. I was pleased with the quality and the length of the screw was a bit shorter but fine for going through the thin metal brackets for the solar panels.

### ⭐⭐⭐⭐⭐ Craft
*by C***Y on September 11, 2026*

Perfect. Hold up to my use.

### ⭐⭐⭐⭐ Nice secure fit -- but special bit needed
*by R***R on May 22, 2016*

Gives a nice, secure fit. Two drawbacks: the bolt is too big to fit into the holes of the Powertek quick release clamps, which was my purpose. I had to use a carbide tipped bit to expand the holes, and then it worked fine. Second, it requires an octagonal bit rather than the phillips. Now that I keep the octagonal bit handy, it works fine.

## Frequently Bought Together

- 8020, 3393, 10 Series Bolt Combo, 1/4-20 x 0.5 Inch Button Head Socket Cap Screw with Slide in Economy T-Nut Steel Hardware 80/20 Nuts and Bolts Set (25 Pack)
- 8020, 1010, 10 Series 1 Inch x 1 Inch T-Slotted Aluminum Extrusion DIY Extruded Linear Slot Bar Rail 80/20 (89" Long, Clear Anodize)
- 8020, 1020, 10 Series 1 Inch x 2 Inch T-Slotted Aluminum Extrusion DIY Extruded Linear Slot Bar Rail 80/20 (Clear Anodize, 48" Long)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-23*