Steel Threaded Rod Capacities (ASTM A36, Pipe Support Hangers)

Documents

Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.

Quotation

• The fastener family (Steel Threaded Rod Capacities (ASTM A36, Pipe Support Hangers)) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
• Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
• Quantity per size and your target delivery date.
• Destination country, and any required documents (for example a mill test certificate) so the quote includes them.

Sample & supply

Minimum order quantity is 1,000–10,000 pieces depending on size. Stock items run 3–7 days. High-strength and custom parts run 15–25 days. Quantities or variants outside the standard range are confirmed at quotation.

Storage & shipping

Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.

Why is capacity based on the thread root and not the rod diameter?

Because in a threaded assembly the load funnels through the smallest solid section — the root of the thread, where the V-form cuts the effective diameter down. The table shows the arithmetic directly: a 1/2 in rod is 0.196 in2 of gross steel but only 0.126 in2 at the coarse-thread root, about 64%, and every capacity figure follows that ratio. It also explains why fine-pitch thread changes capacity (a shallower root leaves more steel) and why a nut must be fully engaged: an unengaged turn moves the load path onto a partially formed thread. When a hanger calc and the catalog disagree, check which diameter — root vs nominal — each used first.

The table says "Maximum Load*" — can it be used as a design allowable?

Not without knowing the basis. The asterisk's footnote did not survive on the collected page, so whether the figures are ultimate loads with an implied safety factor or allowable working loads is unverified, and the difference is typically a factor of several. Structural and pipe-support codes (MSS, ASCE, the local building code) set their own allowable stresses and required safety factors for hanger rods, and a design allowable has to come from the governing code, not from a catalog maximum. Use the ladder to select candidate sizes and cross-check relative capacities between diameters — then confirm the final number against the code with the safety factor applied, per RFQ where the basis matters.