Home Machine Screws Button Head Screws Button Head Socket Cap Screw M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380

M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380

Screw
Screw
Part No. MBSM312B rohs Rating:

material Black Zinc Plated Steel
Ship Date 2026-12-04
Head Button Head
drive Socket  
Head Diameter 5.4 - 5.7 mm
Head Height 1.4 -1.65 mm
Thread M3
Length 12 mm
Unit Price USD$ 0.019 /pcs
Unit Weight 0.756 g
Quantity pcs
Amount USD$ Total Amount USD$
Amount USD$ Total Amount USD$
  
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M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380 M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380
Item Information

Why Choose MBSM312B?

MBSM312B is a M3 Button Head head Socket drive screw with 12 mm length, featuring a Black Zinc Plated Steel finish. Compared to alternative finishes in the same specification such as MBSM312S (SUS304 Stainless Steel), MBSM312Z (Blue Zinc Plated Steel), the Black Zinc Plated Steel of MBSM312B 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 Button Head head design ensures optimal load distribution across the mating surface, while the Socket drive allows efficient torque transmission during installation. Each MBSM312B screw is manufactured to industry standards, RoHS compliant, and supplied with material test reports (MTR) for full quality traceability.

M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380
MBSM312B This part demension will be same as the drawing indicate below, length tolerance will be ±0.5 .
It is Button Head with Socket drive, M3 Thread and 12 mm Length .
material Black Zinc Plated Steel, Finsh is Rohs Black which has good function of anti-corrosion .
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BUY MBSM312B - M3 x 12 mm Button Head Socket Cap Machine Screw - Black Zinc Steel for Precision Assembly | 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 12 mm
M3 x 12 mm
MBSM312S
SUS304 Stainless Steel
M3 x 12 mm
M3 x 12 mm
MBSM312Z
Blue Zinc Plated Steel
M3 x 12 mm
M3 x 12 mm
MBSM312B
Black Zinc Plated Steel
M3 x 12 mm Button Head Socket Cap Machine Screw Steel Black ISO 7380
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Payment & Trasportation 5-10 days

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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 MBSM312B

What is MBSM312B screw?

MBSM312B is a M3 Button Head head Socket drive screw made of Black Zinc Plated Steel, manufactured by Superneer Limited. It has a length of 12 mm and is commonly used in electronics, watches, precision instruments, and 3D printers.

What are the specifications of MBSM312B?

The MBSM312B screw features thread size M3, length of 12 mm, head type Button Head (head diameter 5.4 - 5.7 mm), drive type Socket (drive size ), and is made of Black Zinc Plated Steel.

What material is the MBSM312B screw made of?

The MBSM312B screw is made of Black Zinc Plated Steel. Superneer provides material test reports (MTR) and RoHS compliance certificates for all products. Black Zinc Plated Steel offers excellent corrosion resistance and mechanical strength.

What is the thread size of MBSM312B?

The MBSM312B screw has a M3 thread. This is a metric thread with M3 specification, commonly used in international applications following ISO standards.

What are MBSM312B screws used for?

MBSM312B Button Head head Socket 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 MBSM312B?

The minimum order quantity (MOQ) for MBSM312B is 10,000 pieces. The unit price is $0.019 USD for MOQ quantity. Larger quantities receive discounted pricing. Contact [email protected] for custom quotes.

What is the lead time and shipping for MBSM312B?

The lead time for MBSM312B 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 MBSM312B use and why?

The MBSM312B 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 MBSM312B (M3, 12 mm), ensure your application requires this specific size.

What is the difference between MBSM312B and similar parts?

MBSM312B uses Black Zinc Plated Steel finish, while alternative variants in the same thread/length specification include MBSM312S (SUS304 Stainless Steel), MBSM312Z (Blue Zinc Plated Steel). The Black Zinc Plated Steel of MBSM312B 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 MBSM312B the preferred choice when these properties align with your application requirements.

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