Countersunk Screws

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Countersunk screw manufacturers in China

Professional Countersunk Screw Manufacturers in China

BD Fastener is a professional industrial fastener supplier in China, offering metric and inch countersunk screws in a variety of sizes, materials and finishes. To order a quote, please submit an inquiry online.

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  • High-quality materials
  • Standards-compliant
  • Competitive pricing
  • Customizable

Specifications

MaterialStainless steel, carbon steel, alloy steel, aluminum, brass, titanium alloy
ThreadMetric coarse thread, metric fine thread, UNC, UNF, BSW, BSF, partial threads
SizeDiameter: M2 to M30
Length: 10mm to 100mm
Surface TreatmentNatural, Dacromet, hot-dip galvanized, zinc plated (colored zinc, white zinc, black zinc), chrome plated, nickel plated, oxidized blackened, passivated, etc.
GradeA2-70, A2-80, A4-70, A4-80.
Class 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9.
PackagingPlastic bags, cartons, wooden boxes, pallets

What Is a Countersunk Screw?

A countersunk screw features a conical head, typically with an angle of 90°(metric) or 82°(inch). Before installation, a matching countersunk hole must be machined in the workpiece. Once tightened, the screw head sits fully flush with or below the surface, keeping the workpiece smooth and flat.

  • dk: Head diameter
  • L: Screw length
  • P: Thread pitch
  • d: Thread diameter
Countersunk Screw Drawing

Countersunk Head Screws vs Pan Head Screws

ItemsCountersunk ScrewPan Head Screw
Head typeConical countersunk headCylindrical pan head
Countersunk holePre-drilled countersunk holeStandard through hole
AppearanceFlat and aestheticExposed head
Load capacityLowHight

Countersunk Screw Types

Phillips Countersunk Screw

Phillips Countersunk Screw

Standard: DIN 965, ISO 7046

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Slotted Countersunk Screw

Slotted Countersunk Screw

Standard: DIN 963, DIN 964, DIN 7969, DIN 8245, ISO 2009, JIS B1101

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Hex Socket Countersunk Screw

Hex Socket Countersunk Screw

Standard: ISO 10642, JIS B1194, BS 2470

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Countersunk Wood Screw

Countersunk Wood Screw

Standard: DIN 7997, JIS B1112

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Countersunk Self Drilling Screw

Countersunk Self Drilling Screw

Standard: DIN 7504P, DIN 7504O

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Countersunk Self Tapping Screw

Countersunk Self Tapping Screw

Standard: ISO 7050, JIS B1122, DIN 7505A

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Countersunk Triangular Slotted Screw

Countersunk Triangular Slotted Screw

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Countersunk Square Slot Screw

Countersunk Square Slot Screw

Standard: ASME/ANSI B18.6.3

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Countersunk Torx Screw

Countersunk Torx Screw

Standard: ISO 14581

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Slotted Flat Countersunk Self Tapping Screws

Slotted Countersunk Tapping Screw

Standard: ISO 14581

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