Product Summary

ロンゼ Cross Recessed Countersunk Wood Screws are precision-engineered fasteners manufactured to DIN 97 そして ISO 7050 standards, widely used in high-end cabinetry, furniture assembly, joinery, and

timber framing. Featuring a flat countersunk head and a Phillips (cross) drive, these ロンゼ Cross Recessed Countersunk Wood Screws allow for a perfectly flush or recessed finish in wood surfaces, providing a

smooth aesthetic and preventing snagging in functional applications.

• ✔ Flush Surface Integration: The 90-degree (Metric) or 82-degree (Imperial) head angle ensures the screw sits level with the timber surface for a professional, clean look.

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• ✔ High-Efficiency Cross Recess: Designed for rapid installation with power drivers, the Phillips (cross) drive offers better centering and reduced slippage compared to traditional slotted drives.

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• ✔ Specialized Timber Threads: Deep-cut, sharp threads are engineered to grip wood fibers tightly, providing superior pull-out resistance while minimizing the risk of splitting the grain.

Key Features of Cross Recessed Countersunk Wood Screws

• Self-Centering Point – The sharp gimlet point ensures an immediate start upon contact, keeping the screw aligned during the initial drive.

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• Smooth Shank Design – Longer sizes feature a smooth upper shank that allows the "top" board to be pulled tightly against the base material for a gap-free joint.

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• Superior Material Grades – Available in Case-Hardened Carbon Steel for general use and Marine Grade SS316 for extreme outdoor or coastal environments.

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• Global Standard Compliance – Fully compatible with Metric (DIN/ISO) そして Imperial (ASME) woodworking specifications for international projects.

Technical Specifications

• Standards: DIN 97 / ISO 7050 / ASME B18.6.1 / JIS B1112

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• Metric Size Range: 2.5 mm to 10.0 mm (Diameter)

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• Inch Size Range: #4 to #24 (Diameter)

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• Length Range: 10 mm to 200 mm

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• Drive Type: Phillips (Cross Recess) / Pozi / Torx

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• Finish: Zinc Plated (Clear/Yellow), Black Oxide, Brass Plated, Plain

• Material & Mechanical Propertie

• 材料	学年	Tensile Strength	Feature	応用
  Carbon Steel	C1022A (Hardened)	450 to 600 MPa	High Surface Hardness	General Carpentry / MDF
  ステンレス鋼	SS304 (A2)	$\ge 500$ MPa	Rust Resistant	Decks / Kitchen / Bath
  ステンレス鋼	SS316 (A4)	$\ge 600$ MPa	Acid/Salt Resistant	Marine / Coastal Structures
  Solid Brass	H62 / H65	Medium	Decorative/Anti-Spark	Antique Furniture Restoration

• Standard Dimensions (Metric DIN 97 - Phillips Type)

• Size (d)	Head Dia (dk max)	Head Height (k max)	Shank Dia (ds)	Phillips Drive No.
  3.5 mm	6.50 mm	1.93 mm	3.5 mm	PH2
  4.0 mm	7.50 mm	2.20 mm	4.0 mm	PH2
  5.0 mm	9.20 mm	2.50 mm	5.0 mm	PH2
  6.0 mm	11.00 mm	3.00 mm	6.0 mm	PH3

• Surface Treatment

• Coating	Process	Salt Spray	応用
  Yellow Zinc	Electroplating	72 to 144h	Indoor Furniture / Yellow Pine
  Hot-Dip Galvanized	Molten Zinc	500 to 1000h	Outdoor Fencing / Heavy Timber
  Brass Plated	Electroplating	24 to 48h	Decorative Interior Trim
  Black Oxide	Chemical	24 to 48h	Modern Interior Design / Optics