BSI BS EN 28747
BS BS EN 28747 1989-FEB-28 Grooved Pns wth Countersunk Head-AMD 7494 November 1992 Superseded by BS BS EN SO 8747
BS BS EN 28747 1989-FEB-28 Grooved Pns wth Countersunk Head-AMD 7494 November 1992 Superseded by BS BS EN SO 8747
Pins which have three equally spaced grooves impressed longitudinally on their exterior surface, with metric dimensions and nominal diameter from 1.4 to 20 mm inclusive.