Pipe Fittings

700+ products

Expected delivery: Tue, Nov 17

Pipe fittings join, branch, reduce and cap pipe in water, air, drain and gas systems. This subcategory covers elbows (45 and 90 degree), tees, crosses, couplings, unions, nipples, reducing bushings, plugs and caps. Materials include brass, black iron, galvanized steel, copper, PVC and CPVC. Connection styles include NPT threaded, sweat, solvent weld, compression, barb and push-to-connect.

What to check before you order

Nominal size and thread. Fittings are listed by nominal pipe size. Most threaded fittings here are NPT. Reducing fittings list the larger size first.
Material for the service. Black iron is commonly used for gas and compressed air, galvanized for some water and outdoor uses, brass and copper for water, and PVC for drains and cold water.
Pressure class. Threaded malleable iron fittings come in pressure classes such as 150 and 300. Use the class the system calls for.
Lead free for potable water. Brass fittings in drinking water lines should be marked lead free.
Male or female ends. Note whether each end is male (MNPT) or female (FNPT) before ordering an adapter.

Seal NPT threads with PTFE tape or pipe sealant from sealants and caulk. Pipe itself is under pipe and tubing, valves are under valves, and more parts are in plumbing. Air line fittings are under air fittings and couplers.

Buying guide: NPT pipe threads explained: sizes and sealing

Common questions

What does NPT mean on a pipe fitting?

NPT stands for National Pipe Taper. The tapered threads wedge together and are sealed with PTFE tape or pipe dope. NPT does not mate with BSP threads; see our thread sizes guide.

Can copper be connected directly to galvanized steel pipe?

Joining copper to galvanized steel can cause galvanic corrosion. A dielectric union is commonly used to separate the metals. Follow your local plumbing code.

Pipe Fittings: page 9

MSI Products 2-1/2" x 3-1/2" S40 Galvanized Nipple SKU A28700403.5 $33.97
MSI Products 2-1/2" x 30" S40 Black Nipple SKU A277004030.0 $137.14
MSI Products 2-1/2" x 30" S40 Galvanized Nipple SKU A287004030.0 $169.31
MSI Products 2-1/2" x 36" S40 Black Nipple SKU A277004036.0 $152.45
MSI Products 2-1/2" x 36" S40 Galvanized Nipple SKU A287004036.0 $189.48
MSI Products 2-1/2" x 4" S40 Black Nipple SKU A27700404.0 $30.14
MSI Products 2-1/2" x 4" S40 Galvanized Nipple SKU A28700404.0 $33.97
MSI Products 2-1/2" x 4-1/2" S40 Black Nipple SKU A27700404.5 $33.09
MSI Products 2-1/2" x 4-1/2" S40 Galvanized Nipple SKU A28700404.5 $37.89
MSI Products 2-1/2" x 48" S40 Black Nipple SKU A277004048.0 $152.45
MSI Products 2-1/2" x 48" S40 Galvanized Nipple SKU A287004048.0 $252.65
MSI Products 2-1/2" x 5" S40 Black Nipple SKU A27700405.0 $33.09
MSI Products 2-1/2" x 5" S40 Galvanized Nipple SKU A28700405.0 $37.89
MSI Products 2-1/2" x 5-1/2" S40 Black Nipple SKU A27700405.5 $34.51
MSI Products 2-1/2" x 5-1/2" S40 Galvanized Nipple SKU A28700405.5 $41.60
MSI Products 2-1/2" x 6" S40 Black Nipple SKU A27700406.0 $34.51
MSI Products 2-1/2" x 6" S40 Galvanized Nipple SKU A28700406.0 $41.60
MSI Products 2-1/2" x 60" S40 Black Nipple SKU A277004060.0 $152.45
MSI Products 2-1/2" x 60" S40 Galvanized Nipple SKU A287004060.0 $315.80
MSI Products 2-1/2" x 7" S40 Black Nipple SKU A27700407.0 $43.94
MSI Products 2-1/2" x 7" S40 Galvanized Nipple SKU A28700407.0 $53.51
MSI Products 2-1/2" x 72" S40 Black Nipple SKU A277004072.0 $304.91
MSI Products 2-1/2" x 72" S40 Galvanized Nipple SKU A287004072.0 $394.62
MSI Products 2-1/2" x 8" S40 Black Nipple SKU A27700408.0 $43.94
MSI Products 2-1/2" x 8" S40 Galvanized Nipple SKU A28700408.0 $53.51
MSI Products 2-1/2" x 9" S40 Black Nipple SKU A27700409.0 $49.31
MSI Products 2-1/2" x 9" S40 Galvanized Nipple SKU A28700409.0 $61.00
MSI Products 2-1/2" x Close (2.5") S40 Galv Nipple SKU A2870040C $28.17
Coilhose Pneumatics 20274 1/2"FPT Brass Hexcoupling SKU 166-K0808 $6.39
Coilhose Pneumatics 20768 1/4"FPT x 1/4"MPTNEEDLE Valv SKU 166-NV4304 $20.94
Approved Vendor 28 oz. Cross Peen Hammer SKU 19882 $67.63
3 H Dixon Safety CHK Val SKU 238-SCVH24 $3,057.55
Dixon 3 King Nipple Grooved SKU 238-STV35 $31.95
Dixon 3 King Nipple Plain End SKU 238-STB35 $33.76
3 L Dixon Safety Check V SKU 238-SCVL24 $3,057.55
Dixon 3 Polypro Single Union B SKU 238-SUBV300 $286.30
Dixon 3" Brass Global Male NPTX Male SKU 238-G300-F-BR $10.26
Dixon 3" Global Type E Adapter- Aluminum SKU 238-G300-E-AL $20.69
Dixon 3" Stainless Global Female NPT x SKU 238-G300-A-SS $73.06
MSI Products 3" x 10" S40 Black Nipple SKU A277004810.0 $69.40
MSI Products 3" x 10" S40 Galvanized Nipple SKU A287004810.0 $85.31
MSI Products 3" x 11" S40 Black Nipple SKU A277004811.0 $76.97
MSI Products 3" x 12" S40 Black Nipple SKU A277004812.0 $76.97
MSI Products 3" x 12" S40 Galvanized Nipple SKU A287004812.0 $95.97
MSI Products 3" x 120" S40 Black Nipple SKU A2770048120.0 $712.28
MSI Products 3" x 120" S40 Galvanized Nipple SKU A2870048120.0 $887.47
MSI Products 3" x 18" S40 Black Nipple SKU A277004818.0 $128.43
MSI Products 3" x 18" S40 Galvanized Nipple SKU A287004818.0 $157.85