On December 24, 2024, we received an inquiry from an old American customer. Before that, we had cooperated with this customer once. The last time they bought galvanized full-thread bolts and nuts, and the product they inquired this time was slotted countersunk flat head screws. On the 27th, we received the customer’s purchase order and helped the customer arrange production as soon as possible.

Our company is a leading manufacturer and supplier of high-quality screws, nuts, washers, flanges and other pipe fittings, complying with various standards such as ISO, DIN, UNI, SFS, EN, NF, ANSI, JIS, and GB. We also provide custom surface treatments for screws, including white zinc, yellow zinc, black zinc, tin, nickel, copper plating, as well as dacromet, KTL, mechanical zinc, and hot-dip galvanizing. Inquiry list as follows:

Product Descriptions

Slotted Countersunk Flat Head Screw

The Slotted Countersunk Flat Head Machine Screw is a type of fastening hardware commonly used in mechanical and industrial applications. It features a flat head with a slotted drive, designed for use with a flathead screwdriver. The countersunk design allows the screw to sit flush or slightly below the surface of the material once installed, providing a smooth, streamlined finish. This screw is typically used in pre-threaded holes, offering a precise and secure fastening. It is widely used in industries like electronics, automotive, and machinery, where a neat and low-profile installation is required.

Features of Slotted Countersunk Flat Head Screw

• Headform: Countersunk head
• Head Diameter: ≈15.7mm
• Drive: Slot
• Thread: Fully threaded
• Tensile Strength:
• Grade 2: ≥60,000 psi / Grade 5: ≥120,000 psi
• Hardness:
• Grade 2: HRB 70-100 / Grade 5: HRC 25-34
• Surface Treatment: Zinc Plated, Dacromet, Black Oxide.

Application of Slotted Countersunk Flat Head Screw

1. Industrial Manufacturing
2. Automotive  and Transportation
3. Electronics and Electrical
4. Construction and Furniture
5. Aerospace
6. Energy and Chemical
7. Consumer Goods

Inspection of Slotted Countersunk Flat Head Screw

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