Double Countersunk Plum Head Fiberboard Nails Knurled Cut Tail Double Thread Self Tapping Screws

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

Product Description

Plum blossom groove with ribbed rolling flower screws detailed description

(Comprehensive analysis based on structure, function, application scenarios, and technical parameters)


1. Head design: Torx ®/ Star shaped slot)

Function: Hexagonal star shaped groove design achieves high torque transmission through a dedicated plum blossom head (such as T10-T40 specifications), which can reduce the risk of tooth slippage and improve installation efficiency (torque efficiency increased by about 30%) compared to traditional single/cross grooves.

Anti slip design: The groove contains anti slip ribs, which are suitable for maintaining bite stability even at high speeds of electric tools (recommended speed ≤ 2500RPM).

2. Thread structure: Ribbed knurled thread

• Rolled thread: Roll continuous circular protrusions (ribs) on the surface of the thread, with 4-6 ribs per inch of thread, and a single rib height of 0.1-0.2mm, to enhance the grip on wood fibers.

• Anti loosening principle: After the rolled rib is embedded in the wood, it forms a mechanical lock, and the pull-out resistance is increased by 50% -70% compared to ordinary wood screws. It is suitable for vibration environments (such as furniture assembly, door and window installation).

3. Rod material and surface treatment

• Material:

Carbon steel (C1022): high hardness (HRC35-40), suitable for cork (such as pine and fir);

Stainless steel (SUS304): corrosion-resistant, suitable for outdoor or humid environments (such as garden furniture, bathroom cabinets).

• Surface treatment:

Galvanized blue and white passivation: Salt spray test for ≥ 72 hours, rust prevention performance meets indoor scenarios;

Dacromet coating: salt spray ≥ 500 hours, suitable for coastal or industrial polluted areas.