Stainless Steel Nipples

Stainless steel nipples join two female-threaded parts, extend a line by a short distance, connect a hose or provide the transition from a welded line to a threaded one. This page brings together AISI 304 and AISI 316 hex nipples, barrel (double-threaded) nipples, hose tail nipples, weld-on nipples and reducing hex nipples. The parts are sold under Novus’s own NVS label; each product page carries a size and stock code table.

How to choose a stainless nipple

Check the thread type and size of the two parts to be joined. Use a hex or barrel nipple between two female parts, a reducing nipple between different sizes, a hose tail for hoses and a weld-on nipple to go from a welded line to a thread.

AISI 304 or 316? AISI 304 (1.4301) is the general-purpose chromium-nickel stainless steel used for drinking and domestic water, hot water, heating and cooling circuits, compressed air and food plants. AISI 316 (1.4401) contains molybdenum and resists chlorides, sea water and chemicals better; it is recommended for pools, coastal, chemical and outdoor use. Threaded parts have BSP (Whitworth) threads and should not be combined with NPT parts.

See the full range in stainless steel fittings and nipples in other materials in pipe nipples. Popular items: the AISI 304 hex nipple and the AISI 304 barrel nipple. All NVS products on the NVS brand page.

All products are original and supplied with an invoice; the warranty is provided by the manufacturer or importer. The current price is shown on each product card: the VAT-inclusive price first, the VAT-exclusive price below it.

Frequently asked questions

Hex nipple or barrel nipple?

A hex nipple has a spanner flat in the middle and joins two parts tightly; a barrel nipple is a short threaded pipe used to extend the line.

How do I seal threaded stainless joints?

Use PTFE tape or a stainless-compatible liquid sealant. Over-tightening stainless threads can cause galling; when joining stainless parts to galvanised or carbon steel pipe, a dielectric union is recommended against galvanic corrosion.

Prepared by the Novus Mühendislik ve Enerji Sistemleri technical team · Updated: November 2026