---
product_id: 46325807
title: "1/4-20 x 3-1/2\" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25"
brand: "fastenere"
price: "£19.50"
currency: GBP
in_stock: true
url: https://www.desertcart.co.uk/products/46325807-1-4-20-x-3-1-2-round-head-machine
store_origin: GB
region: United Kingdom
---

# 1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25

**Brand:** fastenere
**Price:** £19.50
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 by fastenere
- **How much does it cost?** £19.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/46325807-1-4-20-x-3-1-2-round-head-machine)

## Best For

- fastenere enthusiasts

## Why This Product

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

## Description

Round Heads have a tall domed top and a flat bearing surface. Machine screws are often used with nuts but also often driven into tapped holes (without nuts). They might be considered a screw or a bolt based on the Machinery's Handbook distinction. In practice, they tend to be mostly available in smaller sizes and the smaller sizes are referred to as screws or less ambiguously as machine screws, although some kinds of machine screw can be referred to as stove bolts.

## Features

- Thread Diameter 0.250"
- Head Diameter 0.472"
- Head Height 0.175"
- Phillips Drive Size #3
- 18-8 Stainless Steel provides strength and offers good corrosion resistance in many environments.

## Images

![1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 - Image 1](https://images-na.ssl-images-amazon.com/images/I/41PoLqfavWL.jpg)
![1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 - Image 2](https://images-na.ssl-images-amazon.com/images/I/41wX11wfk7L.jpg)
![1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 - Image 3](https://images-na.ssl-images-amazon.com/images/I/41PQlCnQPUL.jpg)
![1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 - Image 4](https://images-na.ssl-images-amazon.com/images/I/41Lf64JliwL.jpg)
![1/4-20 x 3-1/2" Round Head Machine Screws, Phillips Drive, Stainless Steel 18-8, Full Thread, Bright Finish, Machine Thread, Quantity 25 - Image 5](https://images-na.ssl-images-amazon.com/images/I/41ujLO7%2BzhL.jpg)

---

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**Shop now:** [https://www.desertcart.co.uk/products/46325807-1-4-20-x-3-1-2-round-head-machine](https://www.desertcart.co.uk/products/46325807-1-4-20-x-3-1-2-round-head-machine)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-29*