Fasteners · DIN 976-1:2016-09, Form A, where applicable
Threaded Rod — DIN 976-1:2016-09, Form A, where applicable
Threaded rod — a continuously threaded bar cut to length. Threaded rod is cut to make studs and hangers. Available in full lengths or cut pieces.
- DIN 976-1:2016-09, Form A, where applicable
- 18 grades
- EN 10204 3.1 / 3.2
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a threaded rod?
Short answer
A threaded rod is a continuously threaded bar cut to length. Threaded rod is cut to make studs and hangers. Available in full lengths or cut pieces.
Threaded Rod: What to Know Before Ordering
- 1 m and 3 m lengths
- Cut to size
- UNC, UN-8 and metric
- DIN 975 is a legacy/withdrawn designation encountered in older specifications and catalogues; dimensions are to the purchase specification
Threaded Rod Materials & Grades
| Grade | Material standard | Best for |
|---|---|---|
| Inconel 825 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B425 (UNS N08825), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Sulphuric and phosphoric acid service, chloride stress-corrosion cracking and sour gas |
| SS 904L threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM A479 (UNS N08904), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Dilute sulphuric acid, phosphoric acid and chloride-bearing cooling water |
| SS 304 threaded rod | Finished fastener specification not asserted; ASTM A193 B8 may be specified for applicable bolting products — confirm the required product form and grade in the purchase specification | General corrosion resistance, food, water and architectural work |
| SS 304L threaded rod | Finished fastener specification not asserted; ASTM A193 B8 may be specified for applicable bolting products — confirm the required product form and grade in the purchase specification | Welded tanks, piping and vessels in general corrosive service |
| SS 310 / 310S threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM A276 / A479 (UNS S31008), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Furnaces, burners and heat treatment at high temperature |
| SS 316 / 316L threaded rod | Finished fastener specification not asserted; ASTM A193 B8M may be specified for applicable bolting products — confirm the required product form and grade in the purchase specification | Chloride-bearing process fluids, marine air and pharmaceutical service |
| SS 321 threaded rod | Finished fastener specification not asserted; ASTM A193 B8T may be specified for applicable bolting products — confirm the required product form and grade in the purchase specification | High-temperature service between 425 and 815 °C |
| SS 347 threaded rod | Finished fastener specification not asserted; ASTM A193 B8C may be specified for applicable bolting products — confirm the required product form and grade in the purchase specification | Welded high-temperature piping in refineries and power plants |
| Duplex 2205 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM A276 / A479 (UNS S32205), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Strength with chloride resistance at a stainless-steel budget |
| Super Duplex 2507 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM A276 / A479 (UNS S32750), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Seawater and high-chloride service where strength also matters |
| Inconel 600 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B166 (UNS N06600), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | High-temperature oxidation, caustic and nuclear service |
| Inconel 625 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B446 (UNS N06625), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Seawater, high strength and high temperature in one alloy |
| Inconel 718 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B637 (UNS N07718), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Very high strength at temperatures up to about 650 °C |
| Incoloy 800 / 800H / 800HT threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B408 (UNS N08800), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Furnaces, petrochemical heaters and high-temperature piping |
| Hastelloy C276 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B574 (UNS N10276), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | The most aggressive mixed acids, wet chlorine and hypochlorite |
| Hastelloy C22 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B574 (UNS N06022), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Mixed oxidising and reducing acids, and weld overlays |
| Monel 400 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B164 (UNS N04400), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | Seawater, hydrofluoric acid and marine service |
| Monel K500 threaded rod | Finished fastener specification not asserted; material/feedstock may be supplied to ASTM B865 (UNS N05500), where applicable; manufacturing route and finished fastener requirements are to the purchase specification or project drawing | High-strength pump shafts, bolting and springs in seawater |
Other fasteners
Stud boltA fully threaded rod supplied with two heavy hex nuts.Hex boltA bolt with a hexagonal head.Heavy hex nutA thicker and wider hexagon nut for pressure bolting.Hex nutA standard hexagon nut.WasherA flat or spring ring that spreads bolt load.U-boltA U-shaped bolt for clamping pipes to supports.Eye boltA bolt with a loop head for lifting or anchoring.Anchor boltA bolt that fixes structures or equipment to concrete.Foundation boltA heavy bolt set in concrete for machinery bases.Socket head cap screwA screw with a cylindrical head and hexagon socket.Machine screwA small-diameter screw for equipment assembly.
Threaded rod — questions buyers ask
What is a threaded rod?
A threaded rod is a continuously threaded bar cut to length. Threaded rod is cut to make studs and hangers. Available in full lengths or cut pieces.
Is threaded rod the same as a stud bolt?
Stud bolts are cut from threaded rod or threaded to length and supplied with nuts, to flange-bolting dimensions.
Which grades are threaded rods available in?
Inconel 825, SS 904L, SS 304, SS 304L, SS 310 / 310S, SS 316 / 316L, SS 321, SS 347, Duplex 2205, Super Duplex 2507, Inconel 600, Inconel 625, Inconel 718, Incoloy 800 / 800H / 800HT, Hastelloy C276, Hastelloy C22, Monel 400, Monel K500.
Which standard covers threaded rod dimensions?
DIN 976-1:2016-09, Form A, where applicable. The material standard depends on the grade.
Reviewed by the technical team, Kanak Steel & Engineering Co.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026
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