Threadbolt Rods2022-06-27T10:39:31-03:00

Threadbolt Rods

Threadbolt  rods are produced by the hot rolling process with large pitch helical-thread shaped shoulders. They are the most versatile bars applied in multiple solutions. 

These bars were developed exclusively for the support and reinforcement of soil and rock massifs, increasing safety levels on slopes, tunnels and underground and open pit mine galleries, mitigating risks to employees, equipment and the enterprise itself as a whole.  

 

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Description

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Threadbolt Rod Nomenclature

Incotep Threadbolt Ties are specified by nomenclature:

THB XX

Mechanical properties

Check the mechanical properties of the standard ASTM A615: 

Mechanical properties ASTM A615 Grade 100
Fluency Limit, minimum (kgf/mm2) 70,3
Tensile Strength, minimum (kgf/mm2) 80,5
Stretching in 200mm, Mín. (%) 7

Technical Characteristics

ASTM A 615 – GRADE 100

Minimum Mechanical Properties [kgf/mm²] Grade 100 Loads [tf]
Limit Loads  Work according to standard ABNT NBR 5629:2018 
Threadbolt  Rods Nominal Diameter [mm] D0 – External Diameter [mm] Core [mm] (*) Area [mm²] Linear Mass (*) [kg/m] Flow Limit Breakage Limit Drain Load Burst Load  Rehearsal  Permanent  Provisional  Load test 
Dimension A Dimension B
THB 16 (**) 16 19,7 Perfil Circular 244,0 1,92 52,7 70,3 12,9 17,2 11,6 6,6 7,7 9,6
THB 19 19 20,9 17,7 17,9 276,0 2,13 70,3 80,5 19,4 22,2 17,5 10,0 11,6 14,6
THB 22 22 24,0 21,8 21,0 390,0 3,06 70,3 80,5 27,4 31,4 24,7 14,1 16,5 20,6
THB 25 25 26,8 24,0 23,5 475,0 3,73 70,3 80,5 33,4 38,2 30,1 17,2 20,0 25,0
THB 32 32 37,1 32,2 31,8 804,0 6,87 70,3 80,5 56,5 64,7 50,9 29,1 33,9 42,4
THB 36 36 38,0 34,8 31,6 998,0 7,85 70,3 80,5 70,2 80,3 63,1 36,1 42,1 52,6

(*) Linear mass is for reference only. 

Normal ABNT NBR 5629:2018 
Maximum test load  = 0,90 x flow load
Permanent workload  = test load / 1,75
Temporary workload  = test load / 1,50
Load proof or short-term loads  = test load / 1,20

Splice Glove

System  External Diameter D [mm] L gauge  [mm]
THB 16(*) 34,92(*) 100,0
THB 19 38,1 110,0
THB 22 38,1 115,0
THB 25 48,3 145,0
THB 32 60,3 175,0
THB 36 60,3 210,0

(*) Hex Profile 

Anchor Nut

System External Diameter D [mm] Length L   [mm] Key Dimension C [mm]
THB 16(*) 34,92(*) 40,0 34,9
THB 19 38,1 55,0 36,0
THB 22 38,1 60,0 36,0
THB 25 48,3 60,0 46,0
THB 32 60,3 90,0 56,0
THB 36 60,3 110,0 70,0

Concave Anchor Nut

System External Diameter [mm] Height H1 [mm] Height H2 [mm] Key Dimension C [mm] Mass [g]
THB 16 42,0 32,0 18,0 32 160
THB 19 43,0 36,0 20,0 32 180
THB 22 48,0 54,0 38,0 38 300
THB 25 48,0 54,0 38,0 38 250
THB 32 70,0 70,0 45,0 48 520
THB 36 100,0 100,0 65,0 67 2200

Degree Ring

System Diameter D [mm] Angle a [Degree] 
THB 16 48,3
THB 19 48,3 5°/ 10° / 15°
THB 22 48,3 20° / 25° / 30°
THB 25 63,5 35° / 40° / 45°
THB 32 63,5
THB 36 96,5

Anchoring Plate

System Dimensions L[mm] X   L [mm] Thickness and [mm]
THB 16 150 X 150 9,5
THB 19 150 X 150 9,5
THB 22 150 X 150 9,5
THB 25 150 X 150 9,5
THB 32 150 X 150 9,5

Concave Anchor Plate

System   Dimensions L[mm] X   L [mm] Thickness and [mm]
THB 16 150 X 150 9,5
THB 19 150 X 150 9,5
THB 22 150 X 150 9,5
THB 25 150 X 150 9,5
THB 32 150 X 150 9,5
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