Hexagon Socket Countersunk Head Screw ISO 10642 — M8×20 — 10.9 — Steel — Black oxide
0001Z2ApprovedStandardStd. ref: ISO 10642:2026Std. designator: Hexagon socket countersunk head screw ISO 10642 – M8 × 20 – 10.9ESX designator: ESX-ISO10642-M8X20-10.9-ST-BLK
Hexagon socket countersunk head screw, M8×20 mm, per ISO 10642.
Engineering Attributes
Dimensions
Countersink Angle90° (included)
Head Diameter17.92 (-1.49/-2.68) mm
Head Height4.96 (0/-0.594) mm
Length20 js15 (±0.42) mm
Shank Diameter8 h13 (0/-0.22) mm
Thread Length15.04 mm
Material
MaterialSteel (ISO 898-1)
Finish / SurfaceBlack oxide (ISO 11408)
External interface
Thread SizeM8×1.25
Drive TypeHex socket (internal hex)
Head TypeCountersunk (flat)
Locking FeatureNo
Point TypePlain / chamfered
Thread DirectionRight-hand
Thread TypeMetric coarse (M)
Internal properties
Unit Weight9.69 ± 1.59 g
Load DirectionTensile (axial pull)
Property Class10.9
18 attributes
Interchangeability
No interchangeability relationships agreed yet.
Technical data is provided as-is and must be independently verified before use. Terms
Pricing & Availability
Unit of sale: piece