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iexcell 50 Pcs M4 x 20/25/30/35/40 Alloy Steel 10.9 Grade Hex Socket Flat Head Cap Screws Bolts Assortment Kit, Black Oxide Finish
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*Packaging of actual item may differ from photo shown
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About Iexcell 50 Pcs M4 X 20/25/30/35/40 Alloy Steel 10.9
✔ Meets/exceeds: DIN7991 ✔ Screw Head Style: Flat head, known as countersunk head, countersunk angle: 90 Degree ✔ Screw Drive Style: Internal Hex Drives, known as Hex Socket Drives, hex Size: 2.5 mm ✔ Head Diameter: 7.8 mm/0.31", Thread Size(Dia.): 4 mm; Thread Pitch : 0.7 mm ✔ Rust proof of Screws: black oxide finish covered with anti-rust oil [ Sizes ]---[ Thread Length ]---[ Total Length ( Include Head) ] M4 x 20--------17.7mm--------20mm M4 x 25--------22.7mm--------25mm M4 x 30--------27.7mm--------30mm M4 x 35--------32.7mm--------35mm M4 x 40--------37.7mm--------40mm [ Package Contains ] M4 x 20--------10 Pcs M4 x 25--------10 Pcs M4 x 30--------10 Pcs M4 x 35--------10 Pcs M4 x 40--------10 Pcs Hex Key ------1 Pcs [ About Internal Hex drives ] Internal Hex drives, also known as Hex Socket Drives, have a hexagonal hole in the center that requires an Allen key, also known as a hex key or Allen Wrench [ About Flat Head ] Flat head screws are designed to fit flush to the surface when used with countersunk holes
