Slotted Countersunk Head Screws
Slotted countersunk head screws feature a flat head with a conical underside, allowing the head to sit flush with the surface when installed in a suitable countersunk hole. The traditional single-slot drive provides a simple solution for applications where a low-profile finish and straightforward installation are required. These screws are commonly used in machinery, equipment, metal components, and general assembly applications.
We supply slotted countersunk head screws in metric and inch-series sizes to meet different application requirements. Metric options include DIN 963, while inch-series products can be supplied according to the applicable ASME B18.5 specifications where appropriate. Available materials, thread sizes, surface finishes, and other specifications can be selected according to your drawings or project requirements. Our sourcing and quality inspection processes help ensure consistent dimensions and reliable product quality.
Specification:
| Item | Metric Slotted Countersunk Head Screws | Inch Slotted Countersunk Head Screws |
|---|---|---|
| Size Range | M1.6-M12 | 1/4"-1-1/2" |
| Dimension Standard | DIN 963 | ASME/ANSI B18.5 |
| Thread | ISO Metric Coarse,Fine Thread | UNC,UNF |
| Thread Standard | ISO 68-1,ISO 965 | ASME B1.1 |
| Thread Class | 6g | 2A |
| Material | Cabon Steel,Alloy Steel,Stainless Steel | Cabon Steel,Alloy Steel,Stainless Steel |
| Steel Property Class | ISO 898-1 Class8.8,10.9,12.9 | SAE J429 |
| Stainless Steel Class | A2-70,A2-80,A4-70,A4-80 | ASTM F593 |
| Surface Treatment | Black Oxidation, Zinc Plated, HDG, Dacromet, Bright Finish,Passivation | |
| Inspection | Dimension,Thread,Mechanical Proeprty,Coating | |
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- Cylindrical Head Torx Screw with Pin
- Hexagon Socket Countersunk Head Cap Screw
- Hexagon Socket Button Head Screws
- Hexagon Socket Head Cap Screw
- Flat Countersunk Head Screw with Cross Recess
- Pan Head Screw with Cross Recess
- Slotted Pan Head Screw
Dimension Standard:
DIN 963 – Metric Series
DIN 963 specifies the dimensions of slotted countersunk flat head screws in the metric series. The corresponding international standard is ISO 2009, which covers product grade A screws in sizes from M1.6 to M10. Dimensional specifications include thread size, head diameter, head height, countersunk head geometry, slot width, and slot depth. Product dimensions can be selected according to the applicable standard and customer requirements.
ASME B18.5 – Inch Series
ASME B18.5 covers the dimensions of inch-series countersunk bolts and slotted countersunk bolts. Key dimensions include bolt diameter, head diameter, head height, slot width, and slot depth. Available sizes and dimensional requirements depend on the applicable standard specifications. Please contact us for detailed dimensions or customized requirements.
Mechanical Property:
ISO 898-1 – Steel Slotted Countersunk Head Screws
ISO 898-1 specifies the mechanical and physical properties of carbon steel and alloy steel bolts, screws, and studs with defined property classes. For slotted countersunk head screws, the applicability of the standard should be confirmed based on the product dimensions and head geometry.
ISO 3506-1 – Stainless Steel Slotted Countersunk Head Screws
ISO 3506-1 specifies the mechanical and physical properties of bolts, screws, and studs made from corrosion-resistant stainless steel. The applicable stainless steel grade and property class depend on the product specification and customer requirements.
SAE J429 – Inch-Series Carbon Steel Slotted Countersunk Head Screws
SAE J429 specifies the mechanical and material requirements for inch-series steel bolts, screws, studs, and other covered externally threaded fasteners. Applicability depends on the specific fastener type, dimensions, and specified grade.
ASTM F593 – Stainless Steel Slotted Countersunk Head Screws
ASTM F593 specifies material and mechanical requirements for stainless steel bolts, hex cap screws, and studs within its defined scope. Before applying this standard to slotted countersunk head screws, its applicability should be verified against the product type and dimensions.