Home Machine Screws Button Head Screws Button Head Torx Screws 4-40 x 3/8" Button Head Torx Machine Screw Steel Blue Zinc Plated

4-40 x 3/8" Button Head Torx Machine Screw Steel Blue Zinc Plated

Screw
Screw
Part No. MBT0406Z rohs Rating:

material Blue Zinc Plated Steel
Ship Date 2026-11-23
Head Button Head
drive Torx   T8
Head Diameter 0.201-0.213 inch
Head Height 0.051-0.059 inch
Thread 4-40
Length 3/8 inch
Unit Price USD$ 0.023 /pcs
Unit Weight 0.619 g
Quantity pcs
Amount USD$ Total Amount USD$
Amount USD$ Total Amount USD$
  
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Item Information

Why Choose MBT0406Z?

MBT0406Z is a 4-40 Button Head head Torx drive screw with 3/8 inches length, featuring a Blue Zinc Plated Steel finish. Compared to alternative finishes in the same specification such as MBT0406S (SUS304 Stainless Steel), MBT0406B (Black Zinc Plated Steel), the Blue Zinc Plated Steel of MBT0406Z offers moderate corrosion resistance with a distinctive blue iridescent appearance, commonly used in automotive assembly, machinery, and general industrial fastening. The Button Head head design ensures optimal load distribution across the mating surface, while the Torx drive allows efficient torque transmission during installation. Each MBT0406Z screw is manufactured to industry standards, RoHS compliant, and supplied with material test reports (MTR) for full quality traceability.

4-40 x 3/8" Button Head Torx Machine Screw Steel Blue Zinc Plated
MBT0406Z This part demension will be same as the drawing indicate below, length tolerance will be ±0.5 .
It is Button Head with Torx drive, 4-40 Thread and 3/8 inch Length .
material Blue Zinc Plated Steel, Finsh is Rohs Blue Zinc which has good function of anti-corrosion .
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BUY 3 8 Button Head Cap Screw - High Quality Wholesale and Custom Screw today,high quality product and best service will be provided by superneer.Each order will be made shippment on time.
Different Finish :
4-40 x 3/8 inch
4-40 x 3/8 inch
MBT0406S
SUS304 Stainless Steel
4-40 x 3/8 inch
4-40 x 3/8 inch
MBT0406Z
Blue Zinc Plated Steel
4-40 x 3/8 inch
4-40 x 3/8 inch
MBT0406B
Black Zinc Plated Steel
4-40 x 3/8" Button Head Torx Machine Screw Steel Blue Zinc Plated
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Payment & Trasportation 5-10 days

Payment Method: T/T & Paypal and other payment method

Shipment Method: Air Express , Air Freight, Sea Shippment

How to Order

1. Order online directly, made payment via Paypal or bank transfer.

2. Superneer arrange production according to drawing,all demensions are within drawing specification.

3. Parts ready, ship to customer.

Frequently Asked Questions about MBT0406Z

What is MBT0406Z screw?

MBT0406Z 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 3/8 inches and is commonly used in electronics, watches, precision instruments, and 3D printers.

What are the specifications of MBT0406Z?

The MBT0406Z screw features thread size 4-40, length of 3/8 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.

What material is the MBT0406Z screw made of?

The MBT0406Z 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.

What is the thread size of MBT0406Z?

The MBT0406Z screw has a 4-40 thread. This is a UNC (Unified National Coarse) thread with 4-40 specification, widely used in North American applications.

What are MBT0406Z screws used for?

MBT0406Z 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.

What is the MOQ and price for MBT0406Z?

The minimum order quantity (MOQ) for MBT0406Z is 10,000 pieces. The unit price is $0.023 USD for MOQ quantity. Larger quantities receive discounted pricing. Contact [email protected] for custom quotes.

What is the lead time and shipping for MBT0406Z?

The lead time for MBT0406Z 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.

What is the metric equivalent of 4-40 thread?

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.

What head type does MBT0406Z use and why?

The MBT0406Z 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.

How to choose the right screw size for my application?

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 MBT0406Z (4-40, 3/8 inches), ensure your application requires this specific size.

What is the difference between MBT0406Z and similar parts?

MBT0406Z uses Blue Zinc Plated Steel finish, while alternative variants in the same thread/length specification include MBT0406S (SUS304 Stainless Steel), MBT0406B (Black Zinc Plated Steel). The Blue Zinc Plated Steel of MBT0406Z 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 MBT0406Z the preferred choice when these properties align with your application requirements.

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