A high‑strength M4 x 20 mm countersunk screw manufactured from premium Grade 12.9 alloy steel with a matte black finish ideal for flush‑mounted, secure fastening in mechanical, robotics, electronics, and precision‑engineering applications. The flat hex socket head sits flush with the surface for a clean, professional appearance, and the internal hex drive allows firm tightening with an Allen key. Designed for durability and load‑bearing performance, this screw is suitable for projects where both strength and a low‑profile finish are essential.

Specifications:

• Thread Size: M4
• Length: 20 mm
• Head Type: Flat Countersunk Hex Socket
• Material: Alloy Steel (Grade 12.9 – high strength)
• Finish: Black Oxide or Black Coating (matte black)
• Thread Type: Fully Threaded
• Drive Size: ~3 mm Allen Key (typical for M4)
• Tensile Strength: High (as per Grade 12.9, typically ~1,200 MPa)