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A2 Stainless Steel Threaded Rods (AISI 304)
11 products · Structural Bolts and Screws
A2 stainless steel (AISI 304) threaded rods are rods threaded along their entire length, rust-resistant, used where a galvanised rod would deteriorate: damp environments, outdoors, food processing and fixings that must stay clean over time.
What you will find in this collection
- Stainless steel threaded rods by the metre
- Stainless steel rods with nut and washer
- Stainless steel threaded rod kits for anchors
- Threaded pins and adapters
- Some items in A4 stainless steel, more resistant to aggressive environments
The brands in the collection are Fischer, Bossong, Unifix and CSC Edilizia, as well as AMES-branded items.
How to choose the right rod
First of all, the diameter and length matter: the rod must pass through the thickness to be fixed and leave free thread for the nut and washer. For normally damp environments A2 is enough; in the presence of chlorides, such as near the sea or in swimming pools, or of aggressive chemicals, A4 is normally used. Nuts and washers should be chosen in the same material as the rod.
To check availability, compatibility and lead times, write to or call AMES Srl and ask for a quotation: supplies are on a quotation basis.
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Frequently asked questions: A2 Stainless Steel Threaded Rods (AISI 304)
What is the difference between A2 and A4 stainless steel?
A2, listed as AISI 304, resists humidity and rust well in normal environments such as sheltered outdoor areas and food processing. A4, AISI 316, is more resistant to chlorides, marine environments and more aggressive processes, for example near the sea or swimming pools. The catalogue has both grades: choose A4 when the environment is more aggressive.
When is stainless steel better than zinc-plated?
Stainless steel is better when the rod is exposed to humidity, rain, condensation or substances that attack zinc, such as cellars, bathrooms, outdoor areas and professional kitchens. Zinc-plated is fine for dry indoor areas where humidity is not a problem. For fixings that must stay clean over time, stainless steel is the safest choice.
How do I read the M on the rod, and how do I choose the length?
Product pages show designations such as M12 or M10: the M followed by the number is the nominal diameter in millimetres, and it also determines the compatible nut and hole. The length is chosen by adding the thickness of the part to fix, the nut and the washer, plus a small margin for tightening. The catalogue has one-metre rods and kits with fixed lengths, such as M12x250.
Which accessories are needed with a threaded rod?
A nut and washer for tightening, couplers to join two lengths, and adapters to connect threads of different diameter, such as the M12 to M10 adapter. For anchoring in concrete, a fixing system such as resin or an anchor is also needed, while for a tie rod a plate or hook sized to the load is enough. Always check that nut, washer and rod are of the same material and grade.
Can a threaded rod be cut to length?
Yes, with a hacksaw for metal or an angle grinder fitted with a disc suitable for stainless steel, working slowly so as not to overheat the material. After cutting, deburr and clean the area, because iron residues can cause rust stains on stainless steel. If the rod is used as an anchor, cut it square and clean before inserting it into the hole.
Who uses stainless steel threaded rods?
They are used by services installers in damp rooms, window fitters, builders of outdoor structures, pipe fitters and those working in the food industry. They are useful for hangers, tie rods and fixings that must stay clean and free of rust over time, even if the base is exposed to rain or condensation.
How do I use them safely in fixings?
For anchoring a rod in concrete or masonry, use a system sized for the load, with the hole diameter and depth specified by the manufacturer, carefully cleaned. For tie rods or load-bearing structures, the anchorage length and the loads must be checked by a technician before fitting. Do not use the rod as a substitute for an anchor without reading the technical data sheet of the product chosen.