FASTENERS

  HIGH STRENGTH STRUCTURAL BOLTING FOR PRELOADING  

  BS EN 14399-3 HR SYSTEM  

EN14399-3 Hex Bolt

PITCH

 DIAMETER

DEPTH OF WASHER FACE (W) MIN   

     L =       

125-200    

  L ≤ 125  

   L ≥ 200  

 THREAD (T)

 THREAD (T) 

 THREAD (T)

       DEPTH OF         WASHER FACE (W) MAX 

DIAMETER OF WASHER FACE (DW)   

TRANSITION

DIAMETER

(DA) 

PITCH

 DIAMETER

HEAD THICKNESS

(H) MIN   

 SHANK DIA

 (DS) MIN  

 A/C (C)

MIN 

 A/F (F)

MIN  

RADIUS

(R) 

 SHANK DIA

 (DS) MIN  

 SHANK DIA

 (DS) MAX  

HEAD THICKNESS

(H) MAX   

 A/F (F)

MAX  

  BS EN 14399-3 NUT DIMENSIONS  

EN14399 Hex Nut

PITCH

 DIAMETER

  T (MIN)  

 DW (MIN)  

 C (MIN) 

 T (MIN)  

 W (MAX) 

 F (MAX)  

 F (MIN) 

 W (MIN) 

  • Dimensions in millimetres

  • Available in Grade 8.8 &10.9 Steel

  • System shown is EN14399-3 Hex Bolt & Nut HR System

  • Bolt/nut assemblies according to this standard shall be assembled with washers in accordance with EN 14399-6 or in accordance with EN 14399-5 (under the nut only)

  • EN14399-4 Hex Bolt & Nut HV System dimensions differ from above

EN14399 Bolting Brochure

Click on the link to download our

BS EN 14399 Stuctural bolting brochure