General Fastener Standards - BS Order

Note: The following table is provided for guidance only as there are  often dimensional variations between standards.

BRITISH STANDARDDIN STANDARDISO STANDARDTYPE OF FASTENER
BS EN ISO4026DIN913ISO4026Hex Socket Setscrew Flat point
BS EN ISO4027DIN914ISO4027Hex Socket Setscrew Cone point
BS EN ISO4028DIN915ISO4028Hex Socket Setscrew Dog point
BS EN ISO4029DIN916ISO4029Hex Socket Setscrew Plain Cup point
BS3692DIN931ISO4014Hexagon head bolt - part threaded
BS3692DIN933ISO4017Hexagon head setscrew – fully threaded
BS3692DIN934ISO4032Hexagon Full Nut
BS3692DIN439/936ISO4035Hexagon Lock Nut
BS4168DIN912ISO4762Hex Socket Cap
BS4168N/AISO7380Hex Socket Button
BS4168DIN7991ISO10642Hex Socket Countersunk
BS4174 ABDIN7981CZISO7049CZSelf tapping pan recess pointed
BS4174 ABDIN7982CZISO7050CZSelf tapping csk recess pointed
BS4174 ABDIN7983CZISO7051CZSelf tapping raised csk recess pointed
BS4174 ABN/AN/ASelf tapping Flange recess pointed
BS4174 BDIN7981FZISO7049FZSelf tapping pan recess blunt
BS4174 BDIN7982FZISO7050FZSelf tapping csk recess blunt
BS4174 BN/AN/ASelf tapping Flange recess blunt
BS4174 BDIN7971FISO1481FSelf tapping pan slotted  blunt
BS4174 BDIN7972FISO1482FSelf tapping csk slotted  blunt
BS4174ABDIN7971CISO1481CSelf tapping pan slotted pointed
BS4174ABDIN7972CISO1482CSelf tapping csk slotted pointed
BS4174ABDIN7983CISO1483CSelf tapping raised csk slotted pointed
BS4183DIN7985ISO7045Pan recess machine screw
BS4183DIN85ISO1580Pan slotted machine screw
BS4183DIN965ISO7046Countersunk recess machine screw
BS4183DIN963ISO2009Countersunk slotted machine screw
BS4183DIN84ISO1207Cheese Slotted machine screw
BS4183DIN966ISO7047Raised Csk Recess machine screw
BS4183DIN964ISO2010Raised Csk Slotted machine screw
BS4464ADIN7980N/ASquare sect. single coil spring washer
BS4464BDIN127N/ARectangular sect. single coil spring washer
N/ADIN7981CHISO7049CHSelf tapping pan Phillips pointed
N/ADIN7982CHISO7050CHSelf tapping csk Phillips pointed
N/ADIN7983CHISO7051CHSelf tapping raised csk Phillips pointed
N/ADIN7981FHISO7049FHSelf tapping pan phillips blunt
N/ADIN6923ISO4161Hexagon Flange Nut
N/ADIN928N/ASquare Weld Nut
N/ADIN929N/AHexagon Weld Nut
N/ADIN6797JN/AToothed lock washer – internal
N/ADIN6797AN/AToothed lock washer – external

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.