Durable Corrosion-Resistant Round Head Plum Screw Bolt Options

• 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 Screws ® (Socket Screws): Experience precision and reliability with our expertly crafted Round Head Torx Screws, providing secure fastening solutions for your needs.

1. Head Design: Featuring an integrated round head coupled with a plum blossom groove, our screws offer both elegance and functionality.

Round Head Characteristics:

• Hemispherical Top: With a diameter typically 1.5-2 times that of the screw, such as 6-8mm for a 4mm screw, this design expertly distributes stress and protects against surface damage from sharp edges.

Embedded Design: The transition radius between head and rod is ≥ 0.5mm, expertly reducing stress concentration for environments exposed to vibrations like in mechanical and sports equipment.

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

Hexagonal Star Shaped Groove: Achieve exceptional high torque transmission via a dedicated batch head (T10-T25 specifications), with anti-slip efficacy increased by over 60% versus traditional cross grooves, perfect for high-speed electric tools (recommended speed ≤ 2800RPM).

Anti Overload Design: Integrating positioning ribs, the groove ensures that when torque exceeds limits, ribs and batch head undergo elastic deformation, safeguarding against head breakage.

2. Thread and Stem Characteristics:

• Thread Type:

Self Tapping Thread (ST Series): Equipped with 3-4 cutting edges at the tip, this design can effortlessly pierce thin metal (≤ 2mm) or plastic without the need for pre-drilling.

Machine Thread (M Series): Designed for use with nuts or internally threaded holes, ideal for high load applications like steel structures and automotive components.

• Material and Coating:

Carbon Steel (10B21/45 # Steel): Heat treated to achieve a hardness of HRC35-40, making it perfect for indoor applications with conventional loads.

Stainless Steel (304/316): Offering outstanding corrosion resistance, these screws are ideal for outdoor or humid environments such as in food machinery and medical equipment.

• Surface Coating:

Galvanized (Blue White/Color Zinc): Salt spray tested for durability ≥ 48 hours, meeting standard industrial anti-rust requirements.

Nickel Based Alloy Coating: Enduring salt spray conditions for ≥ 1000 hours, making it suitable for marine or highly corrosive chemical environments.