#4-40 x 3/8" Flat Head 90° Phillips Machine Screw Steel Black Oxide ANSI/ASME B18.6.3
Why Choose MF9P0406BX?
MF9P0406BX is a #4-40 Flat Head 90 head Phillips drive screw with 3/8 inches length, featuring a Black Oxide Steel finish. Compared to alternative finishes in the same specification such as MF9P0406S (SUS304 Stainless Steel), MF9P0406Z (Blue Zinc Plated Steel), MF9P0406B (Black Zinc Plated Steel), the Black Oxide Steel of MF9P0406BX offers high tensile strength for mechanical and structural applications where corrosion resistance is not the primary concern, often used in machinery, automotive chassis, and load-bearing assemblies. The Flat Head 90 head design ensures optimal load distribution across the mating surface, while the Phillips drive allows efficient torque transmission during installation. Each MF9P0406BX screw is manufactured to industry standards, RoHS compliant, and supplied with material test reports (MTR) for full quality traceability.
Payment Method: T/T & Paypal and other payment method
Shipment Method: Air Express , Air Freight, Sea Shippment
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 MF9P0406BX
What is MF9P0406BX screw?
MF9P0406BX is a #4-40 Flat Head 90 head Phillips drive screw made of Black Oxide 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 MF9P0406BX?
The MF9P0406BX screw features thread size #4-40, length of 3/8 inches, head type Flat Head 90 (head diameter 0.191 - 0.212 inches), drive type Phillips (drive size PH No.1), and is made of Black Oxide Steel.
What material is the MF9P0406BX screw made of?
The MF9P0406BX screw is made of Black Oxide Steel. Superneer provides material test reports (MTR) and RoHS compliance certificates for all products. Black Oxide Steel offers excellent corrosion resistance and mechanical strength.
What is the thread size of MF9P0406BX?
The MF9P0406BX 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 MF9P0406BX screws used for?
MF9P0406BX Flat Head 90 head Phillips 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 90 head aesthetics is required.
What is the MOQ and price for MF9P0406BX?
The minimum order quantity (MOQ) for MF9P0406BX 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 MF9P0406BX?
The lead time for MF9P0406BX 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 head type does MF9P0406BX use and why?
The MF9P0406BX uses a Flat Head 90 head type. Flat Head 90 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 MF9P0406BX (#4-40, 3/8 inches), ensure your application requires this specific size.
What is the difference between MF9P0406BX and similar parts?
MF9P0406BX uses Black Oxide Steel finish, while alternative variants in the same thread/length specification include MF9P0406S (SUS304 Stainless Steel), MF9P0406Z (Blue Zinc Plated Steel), MF9P0406B (Black Zinc Plated Steel). The Black Oxide Steel of MF9P0406BX is specifically selected because it offers high tensile strength for mechanical and structural applications where corrosion resistance is not the primary concern, often used in machinery, automotive chassis, and load-bearing assemblies. This distinction makes MF9P0406BX the preferred choice when these properties align with your application requirements.






















