Threaded rod
Items are being added
KIT is adding items to this category. If you need a specific part, please send a quote request.
Frequently asked questions
What threaded rod size suits pipe and cable tray hangers?
Rod size depends on the suspended load and support spacing; M8, M10 and M12 are the common sizes. Allowable load must be based on the thread's tensile stress area, not the outside diameter. For heavy pipe hangers, follow the support system maker's load tables or an engineer's calculation.
Which strength classes does DIN 975 threaded rod come in?
DIN 975 rod is commonly class 4.8 in general zinc-plated steel, and also available in 8.8, 10.9 and A2, A4 stainless. Class 4.8 is fine for light hanging but is no substitute for a load-bearing anchor bolt. Always state the class when ordering, since the grades look almost identical.
How do I cut threaded rod so the nut still runs on?
Cutting deforms the thread at the cut and leaves a burr. The usual method is to run a nut past the cut point beforehand, then back it off after cutting to restore the thread, and lightly chamfer the end. A dedicated rod cutter leaves a cleaner end than an abrasive saw.
Do hot-dip galvanized rods take standard nuts?
The thick hot-dip coating enlarges the external thread, so standard nuts usually will not run on. Matching nuts must be oversize tapped as the standards for hot-dip galvanized fasteners specify. Keep this in mind when combining rod and nuts from different sources.
Can two threaded rods be joined?
Yes, with a coupling nut (DIN 6334) about three times the diameter in length. Thread each rod in to the middle of the coupler, which can be checked by marking the rods. The coupling nut should match the rod's strength class and coating.
Can hanging threaded rods loosen under vibration?
Rods hanging fans, pumps or pipes with strong flow can have their nuts work loose. Use jam nuts, lock nuts or thread locker at the hanger points. Rubber vibration isolators at the hanger also reduce load on the threads.
Can threaded rod take side loads?
Hanger rod is mainly loaded in axial tension and is very weak in bending from side loads or sway. Long hanger runs or seismic zones need diagonal bracing to carry lateral loads. Long threaded rod should not be used as a cantilever arm.
How do A2 and A4 stainless threaded rods differ?
A2 corresponds to 304 stainless, while A4 corresponds to 316 with added molybdenum for better chloride resistance. A4 suits coastal areas, swimming pools and plants using chlorinated cleaning chemicals. Both are commonly supplied in property class 70, meaning about 700 MPa tensile strength.
