4-40 x 5/16" Button Head Torx Machine Screw Steel Blue Zinc Plated

MBT0405Z is a 4-40 Button Head head Torx drive screw made of Blue Zinc Plated Steel, manufactured by Superneer Limited. It has a length of 5/16 inches and is commonly used in electronics, watches, precision instruments, and 3D printers.

The MBT0405Z screw features thread size 4-40, length of 5/16 inches, head type Button Head (head diameter 0.201-0.213 inches), drive type Torx (drive size T8), and is made of Blue Zinc Plated Steel.

The MBT0405Z screw is made of Blue Zinc Plated Steel. Superneer provides material test reports (MTR) and RoHS compliance certificates for all products. Blue Zinc Plated Steel offers excellent corrosion resistance and mechanical strength.

The MBT0405Z screw has a 4-40 thread. This is a UNC (Unified National Coarse) thread with 4-40 specification, widely used in North American applications.

MBT0405Z Button Head head Torx drive screws are used in electronics assembly, PCB mounting, precision instruments, watches, 3D printers, optical devices, medical equipment, and consumer products where reliable fastening with Button Head head aesthetics is required.

The minimum order quantity (MOQ) for MBT0405Z is 10,000 pieces. The unit price is $0.022 USD for MOQ quantity. Larger quantities receive discounted pricing. Contact [email protected] for custom quotes.

The lead time for MBT0405Z is 15-25 days for production. Shipping to USA takes 5-15 days via sea freight, with shipping cost starting from $50 USD. Air freight is available for urgent orders. DDP and FOB terms are both available.

The 4-40 thread is approximately equivalent to M2.5 to M3 (approx). When substituting inch screws with metric screws, always verify the actual diameter and pitch compatibility.

The MBT0405Z uses a Button Head head type. Button Head head provides a specific head design optimized for its intended application. This head type is selected based on the specific application requirements for load distribution, aesthetics, and accessibility.

To choose the right screw: 1) Determine the required thread size based on the tapped hole or nut; 2) Select the appropriate length based on the material thickness; 3) Choose the head type based on clearance and aesthetics; 4) Select the drive type based on torque requirements; 5) Choose the material based on environmental conditions. For MBT0405Z (4-40, 5/16 inches), ensure your application requires this specific size.

MBT0405Z uses Blue Zinc Plated Steel finish, while alternative variants in the same thread/length specification include MBT0405S (SUS304 Stainless Steel), MBT0405B (Black Zinc Plated Steel). The Blue Zinc Plated Steel of MBT0405Z is specifically selected because it offers moderate corrosion resistance with a distinctive blue iridescent appearance, commonly used in automotive assembly, machinery, and general industrial fastening. This distinction makes MBT0405Z the preferred choice when these properties align with your application requirements.