Head Diameter : 5.5 mm / 0.22", Head Height: 1.7mm /0.07"; Thread Size(Diameter ): 3 mm; Thread Pitch :0.5 mm
Screw Head Style: Button ; Screw Drive Style: Internal Hex, known as Hex-socket drives; Fully Threaded
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Head Diameter : 5.5 mm / 0.22", Head Height: 1.7mm /0.07"; Thread Size(Diameter ): 3 mm; Thread Pitch :0.5 mm
Screw Head Style: Button ; Screw Drive Style: Internal Hex, known as Hex-socket drives; Fully Threaded
Alloy Steel, Black Oxide Finish, 10.9 Grade Tensile Strength
These Screws Comes in an Easy-use Storage Case
***Length Information***
---Item---------------Thread Length------------Total Length
M3 x20mm-----------20mm---------------------21.6mm
M3 x25mm-----------25mm---------------------26.6mm
M3 x30mm-----------30mm---------------------31.6mm
M3 x35mm-----------35mm---------------------36.6mm
M3 x40mm-----------40mm---------------------41.6mm
***Package Quantity***
M3 x20mm-----------20Pcs
M3 x25mm-----------20Pcs
M3 x30mm-----------20Pcs
M3 x35mm-----------20Pcs
M3 x40mm-----------20Pcs
Total------------------100Pcs

***About Internal Hex Drives***
Internal hex drives, also known as hex-socket drives, are similar to hex drives, but have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen wrench.
***About Button Head***
Button head screws are similar to standard pan head screws but have a curved top


  • ✔ Includes 100 Pcs, 5 Sizes, M3 Hex Socket Button Head Cap Screws: M3 x 20, M3 x 25, M3 x 30, M3 x 35, M3 x 40
  • ✔ Screw Head Style: Button ; Screw Drive Style: Internal Hex Drives, Known as Hex Socket Drives, Hex Size 2 mm;Head Diameter: 5.5 mm, Head Height: 1.6 mm; Thread Size: 3 mm, Thread Pitch: 0.5 mm
  • ✔ Material of Screws: Alloy Steel, Black Oxide Finish,High Strength And Anti-rust; Strength Grade: 10.9 Grade, Tensile Strength: 1040 N/mm², Hardness: HRC 32-39
  • ✔ Includes 1 Pcs Hex Key Wrench, Hex Size: 2.0 mm, to Drive These Screws Conveniently and Easily; Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength And Anti-rust
  • ✔ Package: These Screws and 1 Pcs Hex Key Wrench Packed In a Sturdy Easy-use Plastic Storage Case. Organized Conveniently and Easily
  • ✔ Includes 100 Pcs, 5 Sizes, M3 Hex Socket Button Head Cap Screws: M3 x 20, M3 x 25, M3 x 30, M3 x 35, M3 x 40
  • ✔ Screw Head Style: Button ; Screw Drive Style: Internal Hex Drives, Known as Hex Socket Drives, Hex Size 2 mm;Head Diameter: 5.5 mm, Head Height: 1.6 mm; Thread Size: 3 mm, Thread Pitch: 0.5 mm
  • ✔ Material of Screws: Alloy Steel, Black Oxide Finish,High Strength And Anti-rust; Strength Grade: 10.9 Grade, Tensile Strength: 1040 N/mm², Hardness: HRC 32-39
  • ✔ Includes 1 Pcs Hex Key Wrench, Hex Size: 2.0 mm, to Drive These Screws Conveniently and Easily; Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength And Anti-rust
  • ✔ Package: These Screws and 1 Pcs Hex Key Wrench Packed In a Sturdy Easy-use Plastic Storage Case. Organized Conveniently and Easily

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