#8 x 25mm Black Button Head Self-Drilling Screws | Zinc Plated | Pack of 100

Fasten materials directly without pre-drilling using this professional pack of black button head self-drilling screws. Combining a sleek, low-profile wide button head with a No. 2 Phillips drive and a durable black phosphate finish, these #8 gauge, 25mm long screws are engineered for efficient, high-strength fastening in sheet metal, wood, and plastic.

Key Specifications:

• Size: #8 Gauge x 25mm Length

• Head Style: Wide Button Head (Low-Profile, Domed)

• Drive Type: Phillips No. 2 (PH2)

• Point Type: Self-Drilling (Sharp, Fluted Drill Point)

• Material: Case-Hardened 1022A Carbon Steel

• Hardness: 550HV - 750HV (High Surface Hardness for Drilling & Wear)

• Finish: Black Phosphate Coating (Corrosion & Abrasion Resistant)

• Pack Quantity: 100 Pieces

Core Features & Benefits:

• Self-Drilling Design: The integrated drill point allows the screw to drill its own pilot hole and tap threads as it is driven, eliminating the need for a separate pre-drilling step in sheet metal, soft steel, wood, and plastic.

• Aesthetic & Functional Head: The wide button head provides a larger bearing surface for better load distribution and a finished, low-profile appearance that minimizes snagging.

• Durable & Protective Finish: The black phosphate coating offers excellent corrosion resistance and increases surface hardness, protecting against rust and wear in indoor and protected outdoor environments.

• High-Strength Construction: Made from case-hardened 1022A carbon steel, these screws achieve a high hardness rating (550-750HV) for superior drilling performance, shear strength, and resistance to stripping or breaking.

Primary Applications:

• Metal Framing & Fabrication: Ideal for fastening sheet metal to sheet metal or attaching components to steel frames (e.g., HVAC, electrical enclosures, automotive panels).

• Wood-to-Metal Fastening: Excellent for securing wood furring strips, subframes, or fixtures to metal studs or channels.

• Automotive & Marine Trim: Used for attaching plastic trim, liners, and accessories to body panels or chassis where a clean look is required.

• General Construction & DIY: A versatile fastener for a wide range of projects involving mixed materials where speed and a finished appearance are important.

Every order at TINKR promises fast shipping to your door, anywhere in New Zealand. Within 1-3 business days. Courier pickups Monday - Friday. Excluding public holidays.

Our standard delivery requires a signature upon receipt, however type any delivery instructions in the box provided during the TINKR check out on how you want your order delivered. For example, No signature required or leave on front porch etc.

While it is possible for many Auckland orders to be delivered the same day, delivery estimates are; North Island - Overnight. South Island and Rural - extra 1-2 days