Fabrication Calculators
Tube Clocking Calculator
Calculate the arc length along a tube’s surface for a given rotation angle.
Bolt Torque Calculator
Find the recommended tightening torque for your fastener grade, size, and thread pitch.
Values use T = K·D·F at 75% of proof load, nut factor K ≈ 0.20 (dry) adjusted by lubrication. Thread pitch selection affects stress area and therefore clamp load and torque. For critical applications always consult manufacturer specifications or ASME/ISO standards.
Has the amount of feet length, material, OD, and wall thickness of tube
Tube Clocking Calculator
Calculate the arc length along a tube’s surface for a given rotation angle.
Bolt Torque Calculator
Find the recommended tightening torque for your fastener grade, size, and thread pitch.
Values use T = K·D·F at 75% of proof load, nut factor K ≈ 0.20 (dry) adjusted by lubrication. Thread pitch selection affects stress area and therefore clamp load and torque. For critical applications always consult manufacturer specifications or ASME/ISO standards.
Bend Allowance Calculator
Calculate the arc length of material used in a tube bend based on die CLR and bend angle. Tube size doesn’t matter as this is based on centerline of the tube.
The radius from the center of bending die to the centerline of your tubing.
The angle of the bend being made (e.g. 45° or 90°).
Formula: Arc Length = CLR × Degrees × 0.01745 | 0.01745 = 2π ÷ 360. CLR should be measured from the die center to the tube centerline, not the tube inner or outer wall.
Has the amount of feet length, material, OD, and wall thickness of tube
A few honest caveats — cage tubes in a real rollover see combined axial compression, bending, and torsion simultaneously, not pure axial load. This calculator is the right starting point and will flag obviously bad tube choices, but final cage design should still go through a sanctioned builder or engineer, especially for SFI/FIA homologation.
Roll Cage Tube Calculator
Max safe unsupported length · Buckling load · Bending force — for roll cage design