Origin: ImportedSocket head cap screws are bolts (cap screws) with a hexagonal recessed driveAlso know as Allen bolts, they are driven with a hex key or Allen wrenchSocket cap screws are popular in tight spaces where an Allen wrench would fit when another type of drive may notCommonly used in machinery and assembliesDiameter: M5 Drive Type: Internal Hex Finish: Plain Grade: A4 Head Diameter: 8.28 - 8.72 mm Head Diameter Max: 8.72mm Head Height: 4.82 - 5.00 mm Head Height Max: 5.00mm Head Style: Socket Industry Standard: DIN 912 Item: Socket Cap Screw Key Size: 4 mm Length: 16 mm Material: A4 Stainless Steel Measurement: Metric Origin: Imported Specification: DIN 912 Tensile Strength : 101500 psi Thread Length: 16 mm Thread Type: Coarse Type: Full Threaded