iExcell 50 Pcs Metric M4 x 20/25/30/35/40 Stainless Steel 304 Hex Socket Flat Head Cap Screws Bolts Assortment Kit

• ✔ Screw Head Style: Flat Head, Screw Drive Style: Internal Hex Drives, Known as Hex Socket Drives, Hex Size: 2.5 mm; Head Diameter: 7.8 mm; Thread Pitch: 0.7 mm; Thread Dia.: 4 mm
• ✔ Includes 5 Sizes Screws: M4 x 20, M4 x 25, M4 x 30, M4 x 35, M4 x 40
• ✔ Includes 1 Pcs Hex Key, Hex Size 2.5 mm, to Drives These Screws Easily
• ✔ Material of Screws : Stainless Steel 304, High Strength and Anti-corrosion in Various Environments ✔ Material of Hex Key : Chrome-Vanadium Steel, Nickel Plated, Higher Strength and Anti-corrosion
• ✔ Package: 50 Pcs M3 Hex Socket Drives Flat Head Cap Screws and 1 Pcs Hex Key, Come in an Easy-use Storage Case

✔Meets/exceeds: DIN 7991 ✔Screw head style: flat Head, known as countersunk head, countersunk angle: 90 degree ✔Screw drive style: Internal Hex drives, also known as Hex Socket Drives ✔Material of Screws: Stainless steel 304, high strength and anti-corrosion in various environments ✔Material of Hex Key: chrome-vanadium steel, nickel plated ✔Easy to store: these screws and hex key come in an easy-use separated girds storage case [ Sizes ]------------[ Total Length ] M4 x 20-------20mm/0.79" M4 x 25-------25mm/0.98" M4 x 30-------30mm/1.18" M4 x 35-------35mm/1.38" M4 x 40-------40mm/1.57" [ 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.