---
product_id: 353642057
title: "M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS"
price: "$U4250"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/353642057-m3-m4-m5-stainless-steel-button-head-hex-socket-head
store_origin: UY
region: Uruguay
---

# M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS

**Price:** $U4250
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS
- **How much does it cost?** $U4250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/353642057-m3-m4-m5-stainless-steel-button-head-hex-socket-head)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS

## Product Details

- **Size:** M3 M4 M5
- **Color:** Silver
- **Material:** Stainless Steel
- **Brand:** Sutemribor
- **Fastener Type:** Internal Hex Bolt

## Images

![M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS - Image 1](https://m.media-amazon.com/images/I/81udtP49QCL.jpg)

## Questions & Answers

**Q: can these be used for bed assembly?**
A: Your question is a bit vague, but if you are referring to a bed you sleep in it would depend on the type of frame. 

If you are using one of the metal frames usually given out free or fairly cheap when you buy a mattress set, these may work. You will need to make sure the bed frame uses the keyhole locking type system where the metal frame members have metal tabs that lock together and take most of the weight. The screws on those type of frames are merely used to keep the metal pieces from separating versus supporting any of the bed load, so the M5 screws in this kit might work for that task. 

If the frame is designed where any amount of weight is being held or supported by the screw itself, than I would look into a higher quality set, but I would also assume it would require a larger fastener than a M5 screw which is the largest in this kit.

**Q: Any idea how many mm across the screw head is? I have a counter sunk hole that the screw has to go down into.**
A: Pretty much what the other reviewer mentioned, the screw heads all measured:

M3 heads: 5.5 mm
M4 heads: 7.4 mm
M5 heads: 9.3 mm

The actual screw shaft diameter (outside of threads) ran a pretty consistent .06 - 0.8 mm under the screw size, so 3 mm was 2.94, etc. This is well within the allowable tolerance range which, for a M3 screw for example, is a max diameter of 2.980 mm and a min diameter of 2.874 mm, so these screws seem to hit the midpoint pretty consistently. They fit the included nuts well and I also used them in a few aluminum extrusions with pre-tapped holes, so far they fit well.

**Q: What bit fits in this hex socket head??**
A: here is a quick list
3mm bolt = 2mm hex drive
4mm bolt = 2.5mm hex drive
5mm bolt = 3mm hex drive

## Frequently Bought Together

- Sutemribor M3 M4 M5 Stainless Steel Button Head Hex Socket Head Cap Bolts Screws Nuts Assortment Kit, 540PCS
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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-28*