DYWIDAG-SYSTEMS INTERNATIONAL
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DSI Underground  ›  Fibreglass Bolts  ›  Threaded Fibreglass Bolts

Threaded Fiberglass Bolts

Nominal 3/4" (20 mm) & 1" (25 mm)
Dimensions3/4" (20 mm) Bolt
1" (25 mm) Bolt
1" (25 mm) Hollow Bolt
 E Diameter
3/4" (20 mm)1" (25 mm)1" (25 mm)
F Grout Hole Diameter
not availablenot availablenot available
E Thread Size/Type
3/4" right hand1" right hand1" right hand
20" (500 mm) of each end is threadable with a nut.
          
Technical Data3/4" (20 mm) Bolt1" (25 mm) Bolt1" (25 mm) Hollow Bolt
Resin Typepolyester / epoxy resin
Glass TypeE - glass
Glass Content (by weight)75% minimum
E-Modulus, minimum5,075 ksi (35,000 MPa)
Breaking Strain, maximum3% maximum
Cross Sectional Area0.439 in² (284 mm²)0.701 in² (452 mm²)0.526 in² (339 mm²)
Tensile Strength, minimum31,500 lbs (140 kN)50,500 lbs (225 kN)38,000 lbs (170 kN)
Shear Strength, minimum6,200 lbs (28 kN)11,000 lbs (45 kN)10,000 lbs (45 kN)
Nut/Thread Strength, min.18,000 lbs (80 kN)20,000 lbs (90 kN)19,000 lbs (85 kN)
Nut Break Out Torque40 ft-lbs (55 Nm)40 ft-lbs (55 Nm)40 ft-lbs (55 Nm)
Weight0.37 lbs/ft (0.55 kg/m)0.59 lbs/ft (0.88 kg/m)0.44 lbs/ft (0.66 kg/m)
Nut Dimensions (octagonal)1.65" A.F. x 3.1" long (42 mm A.F. x 80 mm)2" A.F. x 3.1" long (51 mm A.F. x 80 mm)2" A.F. x 3.1" long (51 mm A.F. x 80 mm)
Fibreglass Plate4.7" square x 3/4" thick
(120 square x 20 mm thick)
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