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Flat Large Thin Pressure Screw – Metric SS 304 B.O. M4 × 0.7 × 18

Flat Large Thin Pressure Screw – Metric SS 304 B.O. M4 × 0.7 × 18

Regular price 0.81 $ CAD
Regular price Sale price 0.81 $ CAD
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 metric pressure screw is manufactured from stainless steel 304 with a black oxide finish for added corrosion resistance and a sleek appearance.
Its flat, large, and thin head design provides secure fastening while minimizing protrusion, making it suitable for mechanical assemblies, sheet metal work, and applications requiring a flush fit.
With a metric size of M4 × 0.7 × 18 mm, it ensures durability, precision, and reliability in both industrial and DIY applications.

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Specifications

Thread Specifications

Thread type Metric (ISO)
Thread size M4
Pitch 0.7 mm
Major diameter (external) 4.00 mm
Minor diameter (internal) 3.14 mm
Thread angle 60°
Tolerance class (standard) 6g (external) / 6H (internal)

Head Specifications

Type Flat Head – Large Thin (Low Profile)
Profile Low-profile, flush seating
Diameter 8.0 – 9.0 mm (typical for M4 flat head)
Height 1.8 – 2.0 mm
Drive Style Slotted / Hex socket (depending on version)

Neck Specifications

Form Cylindrical shank
Width 4.0 mm
Height 1.5 – 2.0 mm

Strength Specifications

Strength Grade / Class Stainless Steel A2-70 (equivalent to SS304)
Tensile Strength | Hardness: 700 MPa
Shear Strength 420 MPa
Classification ISO 3506