---
product_id: 31090459
title: "Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100"
brand: "topinstock"
price: "₩53453"
currency: KRW
in_stock: true
reviews_count: 12
category: "Topinstock"
url: https://www.desertcart.kr/products/31090459-pre-assembly-square-nuts-flat-m5-t-nut-for-2020
store_origin: KR
region: South Korea
---

# Fits 20x20mm aluminum profiles M5-0.8 precise threading Zinc-plated carbon steel durability Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100

**Brand:** topinstock
**Price:** ₩53453
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your build game with precision-fit power!

## Quick Answers

- **What is this?** Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100 by topinstock
- **How much does it cost?** ₩53453 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/31090459-pre-assembly-square-nuts-flat-m5-t-nut-for-2020)

## Best For

- topinstock enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Ready:** Pack of 100 nuts ensures you’re always stocked for multiple projects or future upgrades.
- • **Accessory Friendly:** Slim flat head design solves clearance issues, ideal for mounting accessories without interference.
- • **Seamless Integration:** Pre-assembly design for quick, hassle-free insertion into 2020 aluminum extrusions.
- • **Perfect Compatibility:** Optimized for 20 series T-slot aluminum profiles and M5 threaded applications.
- • **Industrial-Grade Strength:** Crafted from zinc-plated carbon steel to resist corrosion and ensure long-lasting performance.

## Overview

The TOPINSTOCK Pre-Assembly Square Nuts Flat M5 T Nut pack of 100 offers industrial-grade zinc-plated carbon steel construction with M5-0.8 threading, designed specifically for 20x20mm aluminum extrusion profiles. Engineered for easy insertion and compatibility with 20 series T-slot systems, these nuts provide reliable, corrosion-resistant fastening ideal for professional-grade assembly and accessory mounting.

## Description

Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100: desertcart.com: Industrial & Scientific

Review: Would buy again, bought few so it should last for while - It worked perfect for what I needed it for
Review: Perfect Fit for MLOK Screws - I ran into an issue with the factory M-LOK nuts being too thick to fit properly on my handguard, which meant I couldn’t mount any accessories because the nuts would hit the barrel. Another member mentioned he had the same problem and recommended the TOPINSTOCK T-Nuts since they have the same thread pitch as standard M-LOK screws. I decided to give them a shot, and they worked perfectly, giving me the clearance I needed to attach multiple accessories. The pack comes with plenty of extras, so they’re great to have on hand for future builds. If you're dealing with the same issue, these are a solid fix.

## Features

- Material: zinc plated carbon steel
- T1.5x10x15mm; M5-0.8 thread;
- Simply insert the t nut into the extrusion prior to assembly.
- Compatible with 20 series T Slot aluminum extrusions
- Suitable for most of metric 20 x 20mm aluminium profiles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01HKMF2EE |
| Best Sellers Rank | #90,999 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #111 in T-Nuts |
| Brand | TOPINSTOCK |
| Color | Silver |
| Compatible Groove Diameter | 15.88 Millimeters |
| Customer Reviews | 4.7 4.7 out of 5 stars (79) |
| Drive Style | Slotted, Square |
| Exterior Finish | Zinc |
| Fastener Type | Square |
| Finish Types | Zinc plated |
| Grade Rating | industrial |
| Inside Thread Size | M5 |
| Item Diameter | 5 Millimeters |
| Item Dimensions | 5.12 x 4.33 x 0.39 inches |
| Item Weight | 160 Grams |
| Manufacturer | TOPINSTOCK |
| Material Type | Carbon Steel |
| Metal Type | Carbon Steel |
| Model | FT16031-M5 |
| Number of Pieces | 100 |
| Part Number | FT16031-M5 |
| Screw Head Style | Flat |
| Size Name | M5 Flat T-Nut |
| Thread Size | M 5 |

## Product Details

- **Color:** Silver
- **Exterior Finish:** Zinc
- **Fastener Type:** Square
- **Material:** Carbon Steel
- **Thread Size:** M 5

## Images

![Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100 - Image 1](https://m.media-amazon.com/images/I/51yncRYIDEL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Would buy again, bought few so it should last for while
*by L***G on February 19, 2026*

It worked perfect for what I needed it for

### ⭐⭐⭐⭐⭐ Perfect Fit for MLOK Screws
*by M***. on March 13, 2025*

I ran into an issue with the factory M-LOK nuts being too thick to fit properly on my handguard, which meant I couldn’t mount any accessories because the nuts would hit the barrel. Another member mentioned he had the same problem and recommended the TOPINSTOCK T-Nuts since they have the same thread pitch as standard M-LOK screws. I decided to give them a shot, and they worked perfectly, giving me the clearance I needed to attach multiple accessories. The pack comes with plenty of extras, so they’re great to have on hand for future builds. If you're dealing with the same issue, these are a solid fix.

### ⭐⭐⭐⭐⭐ Great for size reduction in M6 slots
*by S***E on October 7, 2025*

I used these in UniTrack slots on a Permobil power chair that ordinarily uses M6 nuts and screws. However some of my accessories only had M5 or 10-32 holes. In most cases an untapped through hole drilled for 10-32 fasteners will work perfectly well with M5 hardware.

## Frequently Bought Together

- Pre-Assembly Square Nuts Flat M5 T Nut for 2020 Aluminum Extrusions Pack of 100
- M5-0.8 x 10mm Button Head Socket Cap Screws 304 Stainless Steel 18-8 Hex Socket Cap Screws, Allen Hex Drive, Full Thread, Coarse Thread UNC, 100 PCS
- 100pcs 20 Series T Sliding Nuts Hammer Nut Block Square Nuts M5 T Nuts for 2020 Aluminum Profiles T Slot 6mm (m5)

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**Shop now:** [https://www.desertcart.kr/products/31090459-pre-assembly-square-nuts-flat-m5-t-nut-for-2020](https://www.desertcart.kr/products/31090459-pre-assembly-square-nuts-flat-m5-t-nut-for-2020)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-04-29*