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CONSTRUCTION
High strength Pre-Load Bolt Assemblies HV and HR
M12÷M36*
Grade: HV - 10.9 HR - 8.8, 10.9
* M39÷M56 acc. to DASt- Richtlinie 021
EN DIN
EN-14399-3 – Bolt and Nut
Assemblies, type HR DIN 6914 - Bolts
EN-14399-4 – Bolt and Nut
Assemblies, type HV DIN 6915 - Nuts
EN-14399-5, 6 – Washers DIN 6916 - Washers
EN-14399-8 –Fitted Bolts and
Nut Assemblies, type HV
K-classes of the Bolt Assemblies
Class Value of the k-factor
K0 No requirements
K1 ki – Value of the factor acc. to individual testing in accordance with PN-EN 14399-2
K2
km –average value of the factor acc. to PN-EN 14399-2
Coefficient of variation of the factor k Vk
K1: 0,1 ≤ ki ≤ 0,16
K2: 0,1 ≤ km ≤ 0,23; Vk ≤ 0,1
Elements of HV Assembly: 1pce of HV Bolt acc. to PN EN 14399-4 (DIN 6914), Grade 10.9;
1pce of HV Nut acc. to PN EN 14399-4 (DIN 6915), Grade 10;
2pcs of Washers PN EN 14399-6 (DIN 6916).
Elements of HR Assembly: 1pce of HR Bolt acc. to PN EN 14399-3, Grade 8.8, 10.9;
1pce of HR Nut acc. to PN EN 14399-3, Grade 8, 10;
2pcs of Washers PN EN 14399-6.
Marking of HV and HR Bolt Assemblies
Non Pre-Load Bolt Assemblies SB
M5÷M39
Grade: Bolt: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9
Nut: 5,6,8,10,12
Washer: min. 100HV, 200HV, 300HV
EN ISO 4014, 4017 - Bolt
EN ISO 4032, 4034 - Nut
EN ISO 7089, 7090, 7091,7092 -
Washer
Marking of SB Bolts Assemblies