Corrosion-Resistant Heavy-Duty Round Head Screw for Long-Term Use

• Customization: Available
• Material: Stainless Steel
• Type: Round Head
• Model NO.: 1-1
• Groove: Flower
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 6.8
• Surface Treatment: Whitewash
• Applicable Industries: Construction, Manufacturing
• After-Sales: Three Months
• Whether to Support Customization: Support
• Transport Package: Container Loading
• Specification: 1-30
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Round Head Torx® Socket Screws: A hallmark of precision engineering!

1. Head Design: Features a seamless integration of an elegant round head with a sophisticated plum blossom groove, ensuring both strength and style.

Round Head Excellence:

• Hemispherical Top: Boasting a diameter typically 1.5–2 times that of the screw, this design efficiently disperses stress while preventing surface scratches with its smooth, rounded edges. For example, a 4mm screw would feature a head diameter of approximately 6–8mm.

Embedded Design: The transition radius of ≥ 0.5mm between the head and the rod significantly reduces stress concentration, making it perfect for environments subject to vibration, such as in dynamic machinery and athletic equipment.

• Plum Blossom Trough (Torx®/Star Shaped Slot):

Hexagonal Star-Shaped Groove: Designed for high torque transmission with a specialized batch head (e.g., T10-T25), this groove enhances anti-slip capability by over 60% compared to traditional cross grooves. Ideal for high-speed electric tool installation, recommended for use at speeds ≤ 2800 RPM.

Anti-Overload Design: Features positioning ribs within the groove that undergo elastic deformation when torque exceeds specified limits, thus preventing head breakage.

2. Thread and Stem Characteristics: Innovative structure for peak performance.

• Thread Type:

Self-Tapping Thread (ST Series): Equipped with 3-4 cutting edges, these threads easily penetrate thin metal plates (≤ 2mm thick) or plastics without the need for pre-drilling, making installation a breeze.

Machine Thread (M Series): Requires nuts or internally threaded holes, these threads are suitable for high-load applications such as in robust steel structures or automotive components.

• Material and Coating: A fusion of durability and resilience.

Carbon Steel (10B21/45# Steel): Post heat treatment, these screws achieve a formidable hardness of HRC35-40, ideal for standard indoor loads.

Stainless Steel (304/316): Known for exceptional corrosion resistance, these are perfect for outdoor or high-humidity settings, including food processing machinery and medical devices.

• Surface Coating: Comprehensive protection.

Galvanized (Blue White/Color Zinc): Offering a salt spray resistance of ≥ 48 hours, this coating meets general industrial anti-rust standards.

Nickel-Based Alloy Coating: Designed for extreme durability with salt spray resistance of ≥ 1000 hours, it's ideal for marine or chemically corrosive environments.