Hexagon Socket Countersunk Head Screw ISO 10642 — M20×90 — 8.8 — Steel — Black oxide
0001Z7ApprovedStandardStd. ref: ISO 10642:2026Std. designator: Hexagon socket countersunk head screw ISO 10642 – M20 × 90 – 8.8ESX designator: ESX-ISO10642-M20X90-8.8-ST-BLK
Hexagon socket countersunk head screw, M20×90 mm, per ISO 10642.
Engineering Attributes
Dimensions
Countersink Angle90° (included)
Head Diameter40.32 (-3.57/-4.92) mm
Head Height10.16 (0/-1.123) mm
Length90 js15 (±0.70) mm
Shank Diameter20 h13 (0/-0.33) mm
Thread Length49.84 mm
Material
MaterialSteel (ISO 898-1)
Finish / SurfaceBlack oxide (ISO 11408)
External interface
Thread SizeM20×2.5
Drive TypeHex socket (internal hex)
Head TypeCountersunk (flat)
Locking FeatureNo
Point TypePlain / chamfered
Thread DirectionRight-hand
Thread TypeMetric coarse (M)
Internal properties
Unit Weight231.4 ± 15.1 g
Load DirectionTensile (axial pull)
Property Class8.8
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