Product Summary

ลองเซ่อ Cross Recessed Countersunk Head Machine Screws are precision-manufactured according to DIN 965 และ ISO 7046 standards, widely used in consumer electronics, household appliances, furniture

assembly, and precision instruments. Featuring a flat countersunk head with a Phillips (cross) drive, these ลองเซ่อ Cross Recessed Countersunk Head Machine Screws allow the fastener to sit flush with the

surface of the workpiece, providing a smooth, snag-free finish and high-speed installation compatibility.

• ✔ Flush Surface Integration: The 90-degree (Metric) or 82-degree (Imperial) head angle ensures the screw remains level with or below the surface for aesthetic and safety purposes.

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• ✔ High-Efficiency Drive: The Phillips (Cross) recessed drive is designed for automated assembly lines, allowing for quick centering and reduced bit slippage.

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• ✔ Precise Threading: Engineered with tight tolerances to ensure a perfect fit in pre-tapped holes or with matching nuts in metal-to-metal applications.

Key Features of Cross Recessed Countersunk Head Machine Screws

• Space-Saving Profile – Ideal for internal electronic components where clearance is limited and a protruding head would interfere with moving parts.

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• Aesthetic Finish – Provides a clean, professional look on visible panels, cabinets, and consumer goods.

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• Superior Material Grade – Available in Carbon Steel (Grade 4.8 / 8.8) และ Marine Grade Stainless Steel for different strength and environmental needs.

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• Global Standard Compliance – Fully compatible with Metric (DIN/ISO) และ Imperial (ASME) threading and countersink specifications.

Technical Specifications

• Standards: DIN 965 / ISO 7046 / ASME B18.6.3 / JIS B1111

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• Metric Size Range: M1.6 to M16

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• Inch Size Range: #2 to 3/8" (UNC / UNF)

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• Property Class: Grade 4.8, 8.8 / Stainless Steel A2 to A4

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

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• Finish: Zinc Plated (White/Blue/Yellow), Black Oxide, Nickel Plated, Plain

• Material & Mechanical Properties

• วัสดุ	ระดับ	Tensile Strength	Yield Strength	แอปพลิเคชัน
  เหล็กกล้าคาร์บอน	4.8	420 MPa	340 MPa	General Assembly / Toys
  เหล็กกล้าคาร์บอน	8.8	800 MPa	640 MPa	เครื่องจักรอุตสาหกรรม
  สแตนเลส	SS304 (A2)	$\ge 700$ MPa	$\ge 450$ MPa	Kitchenware / Outdoor
  สแตนเลส	SS316 (A4)	$\ge 800$ MPa	$\ge 600$ MPa	Marine / Chemical / Medical

• Standard Dimensions (Metric DIN 965)

• Size (d)	Pitch	Head Dia (dk max)	Head Height (k max)	Phillips Drive No.
  M3	0.5	5.60 mm	1.65 mm	1
  M4	0.7	7.50 mm	2.20 mm	2
  M5	0.8	9.20 mm	2.50 mm	2
  M6	1.0	11.00 mm	3.00 mm	3

• Surface Treatment

• Coating	Process	Salt Spray	แอปพลิเคชัน
  Zinc Plated	Electroplating	72 to 144h	General Indoor Electronics
  Nickel Plated	Electroplating	96 to 120h	Decorative / Precision Tools
  Black Oxide	Chemical	24 to 48h	Optics / Dark Casing
  Passivated	Chemical	1000+h	Food Industry / Marine