---
product_id: 84561241
title: "iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit"
brand: "iexcell"
price: "$34"
currency: NZD
in_stock: true
reviews_count: 13
category: "Iexcell"
url: https://www.desertcart.nz/products/84561241-iexcell-50-pcs-m4-x-20-25-30-35-40
store_origin: NZ
region: New Zealand
---

# 50 pcs versatile sizes Precision M4 x 0.7mm threading 304 stainless steel corrosion-proof iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit

**Brand:** iexcell
**Price:** $34
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your build game with precision and style — don’t get left behind!

## Quick Answers

- **What is this?** iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit by iexcell
- **How much does it cost?** $34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/84561241-iexcell-50-pcs-m4-x-20-25-30-35-40)

## Best For

- iexcell enthusiasts

## Why This Product

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

## Key Features

- • **Complete Size Spectrum:** Five M4 lengths from 20mm to 40mm cover every project need with precision.
- • **Organized Storage Case:** Keep your fasteners sorted and accessible with a smart, easy-use compartmentalized case.
- • **Hex Socket Flat Head Design:** Flush countersunk heads ensure sleek, snag-free finishes for professional-grade assemblies.
- • **Premium 304 Stainless Steel:** Engineered for high strength and unbeatable corrosion resistance in any environment.
- • **Included Chrome-Vanadium Hex Key:** Durable, nickel-plated tool for effortless, slip-free screw driving every time.

## Overview

The iexcell 50 Pcs M4 Hex Socket Flat Head Cap Screws Assortment Kit offers five precise screw lengths (20-40mm) crafted from durable 304 stainless steel for superior corrosion resistance and strength. Featuring a flush countersunk flat head and internal hex drive, these screws deliver a clean, professional finish. The kit includes a high-quality chrome-vanadium hex key and a compartmentalized storage case, making it the ultimate fastener set for professionals and makers seeking reliability and style.

## Description

✔Meets/exceeds: DIN 7991 ✔Screw head style: flat Head, known as countersunk head, countersunk angle: 90 degree ✔Screw drive style: Internal Hex drives, also known as Hex Socket Drives ✔Material of Screws: Stainless steel 304, high strength and anti-corrosion in various environments ✔Material of Hex Key: chrome-vanadium steel, nickel plated ✔Easy to store: these screws and hex key come in an easy-use separated girds storage case [ Sizes ]------------[ Total Length ] M4 x 20-------20mm/0.79" M4 x 25-------25mm/0.98" M4 x 30-------30mm/1.18" M4 x 35-------35mm/1.38" M4 x 40-------40mm/1.57" [ Package Contains ] M4 x 20-------10 Pcs M4 x 25-------10 Pcs M4 x 30-------10 Pcs M4 x 35-------10 Pcs M4 x 40-------10 Pcs Hex Key -----1 Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Flat Head ] Flat head screws are designed to fit flush to the surface when used with countersunk holes.

Review: 🔩 iexcell M4 x 12mm Flat Head Screws: High-Quality Stock for Precision Projects - 🧐 The Specification and Need As someone who frequently prototypes and works on electronics enclosures and 3D-printed assemblies, reliable metric fasteners are essential. The M4 x 12mm size is a workhorse in my shop, and I specifically required the flat (countersunk) head with a hex socket drive for a flush, clean, and secure finish. Buying this 100-piece bulk pack from iexcell was an excellent way to replenish my stock without sacrificing quality. 💎 Material and Finish (The 304 Advantage) The primary feature here is the 304 Stainless Steel construction. This is exactly what is needed for projects that might encounter moisture, outdoor use, or need superior corrosion resistance over basic zinc-plated steel. Corrosion Resistance: The 304 composition (also known as 18-8 stainless) provides peace of mind that these connections will not rust or discolor, maintaining both the structural integrity and the aesthetic of the final assembly. Appearance: The bright, clean finish of the stainless steel looks professional and is uniform across the entire batch of 100 screws. 📏 Precision and Performance A screw is only as good as its threading. The M4 x 0.7mm pitch specification demands consistency, and these fasteners deliver. Thread Consistency: Every screw I tested threaded smoothly into pre-tapped holes and captive nuts, confirming the pitch and diameter were precisely cut. There was no binding or cross-threading issues, which is a major time-saver in assembly work. Hex Socket Drive: The internal hex socket is well-formed, allowing for the application of sufficient torque (necessary for a flat head to countersink properly) without the hex key slipping or stripping the socket. The drive depth seems appropriate for the size. Flat Head Consistency: The countersunk head angle was uniform, ensuring the screws sat perfectly flush when recessed into a prepared countersink hole, resulting in a beautifully clean, snag-free surface. ✅ Final Recommendation For any hobbyist, maker, or professional requiring high-quality, corrosion-resistant, and aesthetically clean metric fasteners, these iexcell M4 x 12mm Stainless Steel 304 Flat Head Cap Screws are highly recommended. They meet all mechanical specifications with consistent quality, making them a reliable and valuable addition to the parts bin. I would absolutely buy this quantity again to keep my stock full.
Review: Good - Good screws I use for bird houses. its only one size not a variety pack, durability i'm not sure about as I just started using them, but they work well for my 3d prints

## Features

- ✔ Includes 50 Pcs, 5 Sizes, M4 Hex Socket Flat Head Cap Screws: M4 x 20, M4 x 25, M4 x 30, M4 x 35, M4 x 40, Thread Size ( Diameter ): 4 mm, Thread pitch: 0.7 mm, Thread Length from 20 mm to 40 mm
- ✔ Material of Screws: Stainless Steel 304, High Strength And Anti-corrosion in Various Conditions
- ✔ Includes 1 Pcs Hex Key, Hex Size: 2.5 mm, to Drive These Screws Conveniently and Easily
- ✔ Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength And Anti-rust
- ✔ Package: 50 Pcs M4 Hex Socket Flat Head Cap Screws and 1 Pcs Hex Key, Come in an Easy-use Storage Case

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07H3NJHNW |
| Best Sellers Rank | #4,268 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #27 in Socket Head Screws |
| Brand | iexcell |
| Date First Available | September 5, 2018 |
| Exterior Finish | Stainless Steel |
| Fastener Type | Hex Socket Flat Head Cap Screw |
| Head Angle | 90 Degrees |
| Head Style | Flat |
| Head Type | Flat |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 4 Millimeters |
| Item Hardness | Grade 5 |
| Item Weight | 5.9 ounces |
| Item model number | M4-2040F-SS304 |
| Manufacturer | iExcell |
| Manufacturer Grade | Grade 304 |
| Material | Stainless Steel |
| Metal Type | Stainless Steel |
| Number of Pieces | 50 |
| Size | M4 x 20/25/30/35/40mm |
| Thread Class | 3A |
| Thread Size | m4-0.7 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| UPC | 601629960012 |

## Product Details

- **Exterior Finish:** Stainless Steel
- **Head Style:** Flat
- **Manufacturer Grade:** Grade 304
- **Material:** Stainless Steel
- **Thread Size:** m4-0.7

## Images

![iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit - Image 1](https://m.media-amazon.com/images/I/71UgXn20stL.jpg)
![iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit - Image 2](https://m.media-amazon.com/images/I/81DKwX4UCBL.jpg)
![iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit - Image 3](https://m.media-amazon.com/images/I/610jqkZpmpL.jpg)
![iexcell 50 Pcs M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit - Image 4](https://m.media-amazon.com/images/I/51QHBu+9AkL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 🔩 iexcell M4 x 12mm Flat Head Screws: High-Quality Stock for Precision Projects
*by N***. on December 16, 2025*

🧐 The Specification and Need As someone who frequently prototypes and works on electronics enclosures and 3D-printed assemblies, reliable metric fasteners are essential. The M4 x 12mm size is a workhorse in my shop, and I specifically required the flat (countersunk) head with a hex socket drive for a flush, clean, and secure finish. Buying this 100-piece bulk pack from iexcell was an excellent way to replenish my stock without sacrificing quality. 💎 Material and Finish (The 304 Advantage) The primary feature here is the 304 Stainless Steel construction. This is exactly what is needed for projects that might encounter moisture, outdoor use, or need superior corrosion resistance over basic zinc-plated steel. Corrosion Resistance: The 304 composition (also known as 18-8 stainless) provides peace of mind that these connections will not rust or discolor, maintaining both the structural integrity and the aesthetic of the final assembly. Appearance: The bright, clean finish of the stainless steel looks professional and is uniform across the entire batch of 100 screws. 📏 Precision and Performance A screw is only as good as its threading. The M4 x 0.7mm pitch specification demands consistency, and these fasteners deliver. Thread Consistency: Every screw I tested threaded smoothly into pre-tapped holes and captive nuts, confirming the pitch and diameter were precisely cut. There was no binding or cross-threading issues, which is a major time-saver in assembly work. Hex Socket Drive: The internal hex socket is well-formed, allowing for the application of sufficient torque (necessary for a flat head to countersink properly) without the hex key slipping or stripping the socket. The drive depth seems appropriate for the size. Flat Head Consistency: The countersunk head angle was uniform, ensuring the screws sat perfectly flush when recessed into a prepared countersink hole, resulting in a beautifully clean, snag-free surface. ✅ Final Recommendation For any hobbyist, maker, or professional requiring high-quality, corrosion-resistant, and aesthetically clean metric fasteners, these iexcell M4 x 12mm Stainless Steel 304 Flat Head Cap Screws are highly recommended. They meet all mechanical specifications with consistent quality, making them a reliable and valuable addition to the parts bin. I would absolutely buy this quantity again to keep my stock full.

### ⭐⭐⭐⭐⭐ Good
*by M***N on October 24, 2025*

Good screws I use for bird houses. its only one size not a variety pack, durability i'm not sure about as I just started using them, but they work well for my 3d prints

### ⭐⭐⭐⭐⭐ Great Screws
*by C***E on October 14, 2025*

Package comes with 5 different lengths of M3 machine screws. Great for small DIY projects. Use them mainly with my 3d printing projects. For the price the amount of screws you get is worth it. Beats going to the hardware store.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-25*