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M3 x 4mm Torx Flat Head Machine Screw Carbon Steel Black

Screw
Screw
Part No. MFTM304B stock rohs Rating:

material Black Oxide Steel
Ship Date 2026-11-21
Head Flat Head
drive Torx   T8
Head Diameter 6±0.2 mm
Head Height 1±0.1 mm
Thread M3
Length 4 mm
Unit Price USD$ 0.016 /pcs
Unit Weight 0.385 g
Quantity pcs
Amount USD$ Total Amount USD$
Amount USD$ Total Amount USD$
  
Item Information

Why Choose MFTM304B?

MFTM304B is a M3 Flat Head head Torx drive screw with 4 mm length, featuring a Black Zinc Steel finish. Compared to alternative finishes in the same specification such as MFTM304S (SUS304 Stainless Steel), MFTM304N (Nickel Plated Steel), the Black Zinc Steel of MFTM304B offers a black decorative finish combined with good corrosion resistance, ideal for consumer electronics, automotive interiors, and applications where both appearance and rust prevention matter. The Flat Head head design ensures optimal load distribution across the mating surface, while the Torx drive allows efficient torque transmission during installation. Each MFTM304B screw is manufactured to industry standards, RoHS compliant, and supplied with material test reports (MTR) for full quality traceability.

M3 x 4mm Torx Flat Head Machine Screw Carbon Steel Black
MFTM304B This part demension will be same as the drawing indicate below, length tolerance will be ±0.5 .
It is Flat Head with Torx drive, M3 Thread and 4 mm Length .
material Black Zinc Steel, Finsh is Rohs Black which has good function of anti-corrosion .
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BUY MFTM304B - M3 x 4mm Torx Flat Head Machine Screw - Black Zinc Steel for Consumer Electronics | Superneer today,high quality product and best service will be provided by superneer.Each order will be made shippment on time.
Different Finish :
M3 x 4 mm
M3 x 4 mm
MFTM304S
SUS304 Stainless Steel
M3 x 4 mm
M3 x 4 mm
MFTM304N
Nickel Plated Steel
M3 x 4 mm
M3 x 4 mm
MFTM304B
Black Zinc Steel
M3 x 4mm Torx Flat Head Machine Screw Carbon Steel Black
MFTM304B Screw 1
MFTM304B Screw 2
MFTM304B Screw 3
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 MFTM304B

What is MFTM304B screw?

MFTM304B is a M3 Flat Head head Torx drive screw made of Black Zinc Steel, manufactured by Superneer Limited. It has a length of 4 mm and is commonly used in electronics, watches, precision instruments, and 3D printers.

What are the specifications of MFTM304B?

The MFTM304B screw features thread size M3, length of 4 mm, head type Flat Head (head diameter 6±0.2 mm), drive type Torx (drive size T8), and is made of Black Zinc Steel.

What material is the MFTM304B screw made of?

The MFTM304B screw is made of Black Zinc Steel. Superneer provides material test reports (MTR) and RoHS compliance certificates for all products. Black Zinc Steel offers excellent corrosion resistance and mechanical strength.

What is the thread size of MFTM304B?

The MFTM304B screw has a M3 thread. This is a metric thread with M3 specification, commonly used in international applications following ISO standards.

What are MFTM304B screws used for?

MFTM304B Flat 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 Flat Head head aesthetics is required.

What is the MOQ and price for MFTM304B?

The minimum order quantity (MOQ) for MFTM304B is 10,000 pieces. The unit price is $0.016 USD for MOQ quantity. Larger quantities receive discounted pricing. Contact [email protected] for custom quotes.

What is the lead time and shipping for MFTM304B?

The lead time for MFTM304B 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 inch equivalent of M3 thread?

The M3 thread is approximately equivalent to #6 (approx 6-32). When substituting metric screws with inch screws, always verify the actual diameter and pitch compatibility.

What head type does MFTM304B use and why?

The MFTM304B uses a Flat Head head type. Flat 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 MFTM304B (M3, 4 mm), ensure your application requires this specific size.

What is the difference between MFTM304B and similar parts?

MFTM304B uses Black Zinc Steel finish, while alternative variants in the same thread/length specification include MFTM304S (SUS304 Stainless Steel), MFTM304N (Nickel Plated Steel). The Black Zinc Steel of MFTM304B is specifically selected because it offers a black decorative finish combined with good corrosion resistance, ideal for consumer electronics, automotive interiors, and applications where both appearance and rust prevention matter. This distinction makes MFTM304B the preferred choice when these properties align with your application requirements.

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