Product Technical Specifications
Brand: IMSCREWS
Size: M4 x 25mm (Overall Length: 27.5mm)
Material: Solid 304 Stainless Steel
Finish: Natural Black (Oxidation Process, Oil-Free)
Head Type: Phillips Pan Washer Head (Base Diameter: 8.35mm, Height: 2.5mm)
Thread Style: Fully Threaded (18 TPI)
Point Type: Type A Point
Package Quantity: 50 Pieces (Driver bit not included)

Common Applications & Installation Guidelines
These fasteners are designed for reliability in DIY projects, home repairs, and electronics assembly. The widened washer head provides strong holding power on soft materials, ensuring secure installations without damaging the surface. Always ensure you use the appropriately sized Phillips driver (cross length approximately 3.5mm-4mm) to maintain optimal torque transfer.

Frequently Asked Questions (FAQ)
Will the black finish peel off easily during installation?
No. These screws utilize a natural black oxidation process rather than a standard paint coating. This ensures the color remains intact without peeling or flaking when driven into materials, leaving your project looking clean and professional.

Do I need to pre-drill holes before using these screws?
Yes, pre-drilling is highly recommended. While they feature a sharp Type A point, pre-drilling pilot holes when working with hardwoods, sheet metal, or dense materials is essential to prevent head snapping and to protect the Phillips drive from stripping.

Are these screws suitable for outdoor use?
The 304 stainless steel base provides high rust resistance, making them highly recommended for indoor, standard outdoor, and humid environments. However, they are not designed for long-term submersion in seawater or exposure to extreme chemical corrosion.

What is the main benefit of the 8.35mm washer head?
The integrated washer head offers a significantly larger bearing surface compared to standard pan heads. This distributes the clamping pressure effectively, preventing the screw from crushing or sinking into softer materials like wood and plastic.

Key Features

• [NATURAL BLACK FINISH & 304 STAINLESS STEEL] Manufactured from solid 304 stainless steel with a natural black oxidation process. Unlike standard painted hardware, this surface will not peel, flake, or leave residue during installation, ensuring a clean and professional look.
• [PRECISE DIMENSIONS & FULL THREAD] Each package contains 50 pieces of M4 x 25mm screws (driver bit not included). Features a fully threaded 25mm shaft, an overall length of 27.5mm, a head height of 2.5mm, and an 18 TPI configuration for consistent gripping power.
• [OVERSIZED PAN WASHER HEAD] Designed with an integrated 8.35mm base diameter washer head. This widened bearing surface distributes clamping force evenly, effectively preventing the screw from sinking too deeply into soft materials like wood or plastics.
• [PRE-DRILLING HIGHLY RECOMMENDED] Engineered with a Type A point. To prevent screw breakage or stripping of the Phillips drive, pre-drilling pilot holes is strongly advised when driving these fasteners into hardwoods or metal sheets.
• [VERSATILE HOME & DIY APPLICATIONS] Highly recommended for indoor, standard outdoor, and humid environments. Ideal for DIY electronics assembly, household repairs, and dark furniture hardware installation. Not suitable for marine environments.

Specifications

• ASIN: B0GY7BPWZB
• Internal SKU: IMS1310
• Size: M4 x 25mm
• Material: Stainless Steel
• Finish: Natural Black
• Head Style: Washer Head
• Package Quantity: 50