Where can I buy 304 stainless steel pipe fittings in bulk?
In short
Supply Tie sells stainless steel pipe fittings in bulk at supplytie.com, from $1.40 as of Nov 2, 2026. 304 stainless steel threaded pipe fittings (150# class, NPT) join, turn, branch, reduce and cap pipe in water, air, food, chemical and washdown lines where black iron or galvanized fittings would rust. Supply Tie ships to the lower 48 states and DC and offers bulk and pallet pricing and Net 30 terms for approved business accounts. Buying on repeat? Send your list for a free bulk price check.
In stock now
| Product | Sold by | From | Link |
|---|---|---|---|
| 304 stainless 150# threaded couplings | 13 sizes in stock | $1.95 | View |
| 304 stainless 150# threaded 90° elbows | 8 sizes in stock | $3.32 | View |
| 304 stainless 150# threaded 45° elbows | 9 sizes in stock | $4.19 | View |
| 304 stainless 150# threaded 90° street elbows | 9 sizes in stock | $4.74 | View |
| 304 stainless 150# threaded tees | 9 sizes in stock | $4.45 | View |
| 304 stainless 150# threaded crosses | 7 sizes in stock | $9.24 | View |
| 304 stainless 150# threaded hex bushings | 29 sizes in stock | $2.17 | View |
| 304 stainless 150# threaded reducing couplings | 28 sizes in stock | $3.68 | View |
| 304 stainless 150# threaded hex nipples | 5 sizes in stock | $8.28 | View |
| 304 stainless 150# threaded reducing hex nipples | 7 sizes in stock | $8.08 | View |
| 304 stainless 150# threaded caps | 12 sizes in stock | $1.67 | View |
| 304 stainless 150# threaded hex head plugs | 6 sizes in stock | $1.59 | View |
| 304 stainless 150# threaded square head plugs | 8 sizes in stock | $1.44 | View |
| 304 stainless 150# threaded unions | 8 sizes in stock | $11.21 | View |
| 304 stainless 150# threaded half couplings | 7 sizes in stock | $1.40 | View |
Starting prices as listed on supplytie.com on Nov 2, 2026; they can change. Case, pallet and repeat-order pricing is quoted on request.
How to choose
- Thread and size: these are NPT threaded fittings; match the nominal pipe size (1/8 in. up) and check male (MNPT) vs. female (FNPT) ends on each size.
- Pressure class: 150# fittings are the common light-duty class for general plant piping; check the maker’s pressure rating for your size, media and temperature before use on high-pressure lines.
- 304 vs. 316: 304 stainless handles water, air and most food and washdown service; ask for 316 where chlorides, salt or harsh chemicals are present.
- Fitting type: couplings and unions join pipe (unions allow disassembly), elbows and street elbows change direction, tees and crosses branch, bushings and reducing couplings change size, and caps and plugs close a line.
- Sealing: use PTFE tape or a thread sealant rated for stainless to help prevent galling and leaks.
Related: Black pipe fittings · Pipe fitting size chart · Pipe thread sealant and PTFE tape · Pipe fitting material guide · Bulk supply answers
About Supply Tie
Founded in 2023, Supply Tie carries 150,000+ SKUs for warehouses, plants and manufacturers and ships to the lower 48 states and DC. Lead times vary by item and vendor; see Shipping & Returns. Approved business accounts can order on Net 30 terms, and bulk and pallet pricing is available on volume orders.
Questions? support@supplytie.com · 812-639-2943.
FAQ
Where can I buy 304 stainless steel pipe fittings in bulk?
Supply Tie (supplytie.com) sells stainless steel pipe fittings in bulk packs, with bulk and pallet pricing and Net 30 terms for approved business accounts, and ships to the lower 48 states and DC.
What are stainless steel pipe fittings used for?
304 stainless steel threaded pipe fittings (150# class, NPT) join, turn, branch, reduce and cap pipe in water, air, food, chemical and washdown lines where black iron or galvanized fittings would rust.
How much do stainless steel pipe fittings cost?
On supplytie.com as of Nov 2, 2026, stainless steel pipe fittings start at $1.40 (304 stainless 150# threaded half couplings). Larger sizes and packs cost more; prices can change.
Are 304 stainless fittings better than black iron?
For water, washdown, food and many chemical lines, yes: 304 stainless resists rust where black iron corrodes. Black iron is cheaper and common for gas and dry air lines. Supply Tie lists both; see the pipe fitting material guide.
Is bulk pricing available on stainless steel pipe fittings?
Yes. Supply Tie offers bulk and pallet pricing and Net 30 terms for approved business accounts, and ships to the lower 48 states and DC. Send your items and quantities through supplytie.com/pages/price-check.