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X-BT
Load data
Design data
Steel grade: S235, S355, Grade 50
Europe, USA A36 and stronger steel
Tension, Nrec [kN/lb] 1.8 / 405 2.3 / 517
Shear, Vrec [kN/lb] 2.6 / 584 3.4 / 764
Moment, Mrec [Nm/lb] 8.2 / 6 8.2 / 6
Torque, Trec [Nm/lb] 8 / 5.9 8 / 5.9
Conditions for recommended loads:
• Global factor of safety for static pullout > 3 (based on 5% fractile value)
• Minimum edge distance = 6 mm [ 1 /4”].
• Effect of base metal vibration and stress considered.
• Redundancy (multiple fastening) must be provided.
• The recommended loads in the table refer to the resistance of the shank cross-section. The loads acting on the
cross-section (N' and V') are influenced by the characteristics and arrangement of the part or material fastened
and may not be the same as the loads acting on the fastened part or material (N and V). The existence and/or
magnitude of moment acting on the fastener shank (M') is influenced by the characteristics and arrangement
of the fastened part or material.
Cyclic loading:
• Anchorage of X-BT-R threaded stud in steel base material is not affected by cyclic loading.
• Fatigue strength is governed by fracture of the shank. Inquire at Hilti for test data if high cycle loading has to be
considered in the design.
Test data
Important note: Test data are for information only and can't be used for design. These data
are examples and not representing the whole range of applications and load cases. The use
of the X-BT in base steel with a thickness below 8 mm will damage the backside of the steel.
For more detailed information please contact Hilti.
Characteristic Pllout Load [kN]
Base steel thickness, tII [inch]
10 2250
9
2000
8
7
1750
1500
6
1250
5
4
1000
3
750
2
500
1
250
0
0
Base steel thickness, tII [mm]
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Range of 5% fractile values, N5%
in various tests
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
4.48 11 / 2007
Ultimate pullaout load [lbs.]
N'
M'
V'