Installation Typicals - Fastening on Steel Threaded Studs

FASTENERS USED FOR
TYPICALS CALCULATION
Blunt Tip / Sharp Tip Fasteners
Key Questions
Fastener
X-BT-MR
Threaded stud
(new generation)
S-BT-MR
Threaded stud
X-BT-MF
Threaded stud
S-BT-MF
Threaded stud
X-ST-GR
Threaded stud
Material
Stainless steel
A4, 316
Stainless steel
A4, 316
Stainless steel
A2, FRP
Hot-dip
galvanized
Stainless steel
A2, 304
1
Corrosive
environment
Highly corrosive
C4, C5
Highly corrosive
C4, C5
Mildly corrosive
C3
Mildly corrosive
C3
Mildly corrosive
C3
2
Damage to
coating
No @ ≥ 8 mm (
5
⁄
16
") No @ ≥ 6 mm (¼") No @ ≥ 8 mm (
5
⁄
16
") No @ ≥ 6 mm (¼") Yes
3
Application
Limit*
≥ 8 mm (
5
⁄
16
")
full steel
≥ 6 mm (¼")
full steel
≥ 8 mm (
5
⁄
16
")
full steel
≥ 6 mm (¼")
full steel
6 mm (¼")
full steel
Base
material
• Steel
• Stainless Steel
• Cast iron
• Steel
• Aluminum
• Steel
• Stainless Steel
• Cast iron
• Steel
• Aluminum
• Steel
Tensile
load (N
rec
)
3.6 kN (810 lb)
Steel 1.8 kN (405 lb)
Alu 1.0 kN (225 lb)
1.5 kN (340 lb)
Steel 1.8 kN (405 lb)
Alu 1.0 kN (225 lb)
1.8 kN (405 lb)
Shear
load (V
rec
)
4.3 kN (970 lb)
Steel 2.6 kN (585 lb)
Alu 1.5 kN (340 lb)
2.2 kN (500 lb)
Steel 2.6 kN (585 lb)
Alu 1.5 kN (340 lb)
1.8 kN (405 lb)
Tightening
torque
20 Nm (14.8 ft-lb) 8 Nm (5.9 ft-lb) 8 Nm (5.9 ft-lb) 8 Nm (5.9 ft-lb) 8.5 Nm (6.3 ft-lb)
Pilot hole
required
Yes Yes Yes Yes No
Available thread
diameter
M8 | MW6 | MW10 M8 | MW10 MW10 M8 | MW10 M8
Max. fastened
material height
t
I
≤ 15 mm (
9
⁄
16
")
Removable
t
I
≤ 15 mm (
9
⁄
16
")
Removable
t
I
≤ 10 mm (⅜")
Removable
t
I
≤ 15 mm (
9
⁄
16
")
Removable
t
I
≤ 10 mm (⅜")
Removable
Required
equipment
SF BT 22-A and
DX 351-BT
SBT 4-A22
SF BT 22-A and
DX 351-BT
SBT 4-A22
DX 5 and
DX 76 PTR
Approvals
DNV GL, ABS,
LR, BV, ICC-ES
DNV GL, ABS, LR,
BV, ICC-ES
ICC, UL
DNV GL, ABS, LR,
BV, ICC-ES
ICC-ES, ABS
*Application Limit @ S275 | Grade A36 Steel | Refer to the Direct Fastening Technology Manual (DTFM) for detailed technical data
5Issued August 2018, expiry January 2022