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Price
$16.99
Walfront 200Pcs M3 Grade 10.9 Countersunk Head Screw Kit Alloy Steel Machine Screws 4-25mm Corrosion Resistants Fasteners for Marine, Electronics, DIY Projects with Storage Case Black โ€” image 1
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Walfront 200Pcs M3 Grade 10.9 Countersunk Head Screw Kit Alloy Steel Machine Screws 4-25mm Corrosion Resistants Fasteners for Marine, Electronics, DIY Projects with Storage Case Black

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$16.99
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About this item
  • Premium Grade 10.9 Alloy Steel: Crafted with aerospace-grade alloy steel hardened to 10.9 rating, these screws withstand 1000+ N/mmยฒ tensile strength 30% stronger than standard fasteners. Black oxide coating provides saltwater corrosion resistance, passing 500hrs salt spray testing for marine use.
  • Precision Countersunk Design: Laser-engraved Torx TR20 drive ensures 6x better transfer than Phillips heads. 90ยฐ flat head seating creates seamless alignment (ยฑ0.1mm tolerance), perfect for CNC machining and electronics enclosures.
  • 15 Sizes for Versatile Applications: From 4mm mini screws for PCB mounting to 25mm heavy-duty fasteners, this 200pc kit covers 90% of M3 applications. Includes 5 size groupings with color-coded compartments.
  • Marine-Grade Zinc-nickel plating combined with dichromate passivation creates triple-layer defense against humidity. Tested to withstand 95% RH environments for 12 months without oxidation - ideal for boat engines and outdoor electronics.
  • Professional Organization System: Military-grade PP case with shockproof foam insert keeps screws dust-free. Each compartment has engraved size labels and quantity indicators (40pcs/size average). Carry handle and IP54 rating make it jobsite-ready.
Product description

Description: These countersunk flat head hex screws. The screws are 10.9 grade alloy steel, resistant to rust and corrosion. There are 8 lengths for you to choose from, which can be generally used in home and office appliances, machinery, furniture, etc. Features: Material: 10.9 Quality alloy steel The color black Thread length: 4mm (30Pcs), 6mm (30Pcs), 8mm (30Pcs), 10mm (30Pcs), 12mm (20Pcs), 16mm (20Pcs), 20mm (20Pcs), 25mm (20Pcs) Thread diameter: 3mm (M3 ) Box size: 13 * 6.5 * 2.3cm / 5 * 2.6 * 0.9 " Quantity: 1 x Box of screws 200Pcs Package weight: 138g Type: hexagonal countersunk head Function: Fixation Package includes: 1 x box of screws 200Pcs

Product details
Brand
Walfront
Manufacturer
Walfront
Colour
black

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
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Excellent
4.5 average rating
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S
Sigalit
๐Ÿ‡ฎ๐Ÿ‡ฑ ยท January 2026
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I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
๐Ÿ‡ฆ๐Ÿ‡บ ยท November 2025
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The package was here in Australia from England in a few days โ€” so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 1โ€“2 of 10 reviews

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