Hexagon Socket Head Shoulder Screw ISO 7379 — 25×50 — None (as processed)
0002JBApprovedStandardStd. ref: ISO 7379Std. designator: Hexagon socket head shoulder screw ISO 7379 - 25 × 50ESX designator: ESX-ISO7379-25X50-12.9-ST-PL
Hexagon socket head shoulder screw, ground shoulder Ø25 × 50 mm with an M20 thread, per ISO 7379.
Engineering Attributes
Dimensions
Head Diameter36 (0/-0.39) mm
Head Height16 (0/-0.27) mm
Nominal Diameter20 mm
Shoulder Diameter25 (-0.02/-0.072) mm
Shoulder Length50 (+0.25/0) mm
Socket Across Flats12 (+0.142/+0.032) mm
Socket Depth10 min mm
Socket Wall3.25 min mm
Thread Length26.6 (+0.80/0) mm
Socket Across Corners13.72 min mm
Material
MaterialSteel (ISO 898-1)
Finish / SurfaceNone (as processed)
External interface
Thread SizeM20×2.5
Drive TypeHex socket (internal hex)
Head TypeCylindrical (socket cap)
Locking FeatureNo
Point TypePlain / chamfered
Thread DirectionRight-hand
Thread TypeMetric coarse (M)
Internal properties
Unit Weight349.7 ± 8.4 g
Load DirectionShear (lateral)
Property Class12.9
Shoulder Surface RoughnessRa 0.8 max (before electroplating) µm
23 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