The Best 3/8 Nipple of 2023 – Reviewed and Top Rated

2,194 Reviews Scanned

SaleRank No. #1

Winmien 5PCS Solid Brass Hex Nipple Pipe Fitting, 3/8"NPT Male x 3/8" NPT Male Equal Diameter Pipe Adapter. (3/8"NPT Male x 3/8" NPT Male)

Material: Heavy-duty forging made of thickened brass, polished and polished brass hexagonal nipple adapter.
Thread: externally threaded brass equal-diameter hexagonal threaded joint, thread is deep and accurate, NPT thread with a taper of 60°.
Durability: Due to its good chemical and physical properties, brass has the advantages of corrosion resistance, high temperature ductility, low permeability, etc., and it can adapt to most high temperature and low temperature environments.
Scope of application: The brass adapter can be used to connect two internally threaded pipes of the same diameter or extend the length of the pipe. Suitable for household plumbing, grease, fuel, natural gas, hydraulic and other applications.
Note: This product will expose you to a small amount of chemicals including lead (2.5%), so these accessories are not allowed to be installed for drinking water.

Rank No. #2

JoyTube 3/8" Male to 3/8" Male NPT Hex Nipple 304 Stainless Steel Threaded Pipe Fittings (Pack of 5)

5pcs 3/8" NPT to 3/8" NPT hex nipple.
Available for full range of liquids and gas, water, air and some corrosive liquid.
304 stainless steel for strength and resistance to corrosion.
Perfect for any home brewing application.
Integral hex nut for using a wrench to tighten the fitting.

SaleRank No. #3

U.S. Solid 304 Stainless Steel Hex Nipple, 6000 psi High Pressure Heavy Duty Pipe Fitting, 3/8" x 3/8" NPT Male Thread Pipe Adapter(1 pc)

High quality material: stainless steel 304 bar stock, very durable with outstanding structural strength, increased corrosion resistance, lighter weight compared to brass fittings.
Excellent machining: fine appearance, smooth surface and standard NPT thread size.
High precision threads: NPT threads follow ASME B1.20.1 and SAE AS71051, and all male threads are protected from damage by plastic caps.
Distinguished performance: tested max temperature up to 1,000°F / 537°C and max pressure up to 6,000 psi.
Application: use for fluid, air, gas, oil and fuel. Works for multiple applications and industries, including hydraulics, pneumatics, plumbing, etc. Tested by SGS, this product contains no lead.

Rank No. #4

2PCS Brass Nipple Pipe Fitting, 3/8" x 3/8" NPT Male Hex Nipple, NPT Male Pipe Adapter by CX WONDERLAND

FUNCTION : The 3/8" x 3/8" NPT brass fitting is an adapter for connecting two NPT female threaded pipes. It can apply to water, gas, oil and fuel especially for hoses.
HIGH-QUALITY MATERIAL : As a solid and sturdy material, brass is perfect for hose systems as it can withstand long periods of wear and tear. It is corrosion resistant and can be used in wet environments. Brass is also more durable than iron and iron galvanized pipe fittings.
THREAD : Barbed edges allow the fittings to bite better, not easy to slip. The excellent connection, deeper and smoother threads design makes work easier and more effective.
WARNING : This product can expose you to chemicals including lead, which is not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.

Rank No. #5

Hgzaccompany 304 Stainless Steel Cast Pipe Fitting, 3/8" NPT x 3/8" NPT Male Threaded Nipple Pipe,4" Length

Thread: 3/8" NPT x 3/8" NPT Male thread, 3/8"NPT actual thread diameter is 0.675 inch,NPT thread size does not actual diameter, it is only nominal pipe size.4" length (100mm)
The pipes are made of high-quality 304 stainless steel, which is strong and corrosion-resistant
Widely used: stainless steel pipe and other pipes are common, easy to install and replace
Durable: excellent choice for laying home plumbing, can be used for a long time
Temperature: from -65 to 250 degrees F.

Rank No. #6

TAISHER 2PCS 304 Stainless Steel Hex Nipple, Pipe Fitting 3/8-Inch Male Pipe x 3/8-Inch Male Pipe

Product Type —— Nipple(3/8"Male NPT x 3/8"Male NPT) with protective case,for industry connecting pipes or fittings with different end types,diameters,or materials,NPT thread size does not actual diameter,it is only nominal pipe size.
Product Material —— Forging of 304 stainless steel strength and resistance to corrosion.
Working Temperature —— Temperature range from -80 to 1472 degrees F/-62 to 800 degrees c.
Maximum Pressure —— Maximum working pressure is 2800PSI.
Special Feature —— The quality of forged stainless steel is better than casting.

Rank No. #7

Anderson Metals Brass Pipe Fitting, Long Nipple, 3/8" x 3/8" Male Pipe, 2" Length

Long nipple for connecting two threaded pipes
Male National Pipe Taper (NPT) threads for connecting to female threaded pipes
Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F)
Meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance

Rank No. #8

U.S. Solid Brass Pipe Fitting, Hex Nipple, 3/8" x 3/8" NPT Male Pipe Adapter

FUNCTION - The 3/8" x 3/8" NPT brass fitting is an adapter for connecting two NPT female threaded pipes.
DURABLE - As a solid and sturdy material, brass is perfect for hose systems as it can withstand long periods of wear and tear.
THREAD - High quality and deep threads allow the fittings to bite better, not easy to slip.
MEDIUM - This pipe fitting can apply to water, air, gas, oil and fuel.
WARNING - This product can expose you to chemicals including lead(~2.85%), which is not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.

Rank No. #9

TAISHER 10PCS Brass Pipe Fitting, Reducer Adapter, Hex Nipple,3/8-Inch Male Pipe x 3/8-Inch Male Pipe

MATERIAL - Durable solid brass of high strength and hardness with a longer service life, strong and durable.
EXCELLENT PERFORMANCE - Brass for corrosion resistance, high temperature ductility and low magnetic permeability, solid brass can withstand up to 121 °C (250 °F)
THREADS - High quality and deep threads allow the fittings to bite better, tight threads, not easy to slip
STANDARD - Male NPT threads for connecting to female threaded pipes, this premium brass pipe fitting can be used to connect various pipes, such as air pipe, fuel pipe, water pipe as well as air tools.
PLEASE NOTE - NPT thread size does not actual diameter, it is only nominal pipe size

Rank No. #10

KOOTANS Forged Brass Equal Hex Nipple, 3/8'' NPT Male x 3/8'' NPT Male Thread Adapter Brass Pipe Fittings Connector Couplings (Pack of 4)

SIZE - 3/8 NPT to 3/8 NPT male brass equal hex nipples. PLEASE NOTE, NPT Taper Thread Size is a nominal pipe size and it does not represent the actual diameter. Please look the size chart for the specific thread diameter. NPT thread has a 60° taper, so usually unable to screw the thread to the end.
MATERIAL - Premium solid brass nipple, thicker and stronger, durable, threads are deep and accurate, high corrosion resistance, low magnetic permeability and high temperature ductility. Quantity: 4pieces brass hex nipple adapters.
FUNCTION - Used to connect female pipes with same diameters, or extending the pipe length. Apply to plumbing connections, compressed air, hydraulic, refrigeration, instrumentation, gas and other applications, hex nipples for easy tightening and loosening.
Operating pressure: 1200 psi; Temperature range of -65°F to +250°F (-53°C to +121°C). It's hard connect way and in most cases do not require sealant.
NPT TAPER THREAD - The standard NPT taper threads allow the brass fittings better mesh with the object, strengthen the fixation to prevent leakage. The threads are smoother, the installation is easier and faster.

Rank No. #11

TAISHER 2Pcs Stainless Steel Pipe Fittings, 3/8" NPT x 3/8" NPT Male Threaded, 2" Length Nipple Cast Pipe

Product Type —— Nipple Cast Pipe(3/8"Male NPTx 3/8"Male NPT，2"style is about 50 mm length),NPT thread size does not actual diameter, it is only nominal pipe size.
Product Material —— 304 stainless steel strength and resistance to corrosion.
Working Temperature —— Temperature range from -65 to 250 degrees F
Maximum Pressure —— Maximum working pressure is 435 psi/3MPa,Suggested working pressure 150PSI
Application range —— Used for connecting, terminating, controlling flow, and changing the direction of piping.

Rank No. #12

Hooshing 3/8" Male to 3/8" Male NPT Hex Nipple Stainless Steel 304 Threaded Pipe Fittings for Brew Kit Home Piping, Pack of 4

Size: 3/8" Male x 3/8" Male NPT Thread. Tapered Thread.
Connections: Hex Nipple, suit for connecting and extending pipes.
Material: Made of quality stainless steel 304, durable and stdury corrosion resistance, ductility at high temperatures, and low magnetic permeability.
Operating temperature range: -65 to 250 degrees F; working pressure: 0-360 PSI; pressure rating : class 150.
Widely Applications: hydrant pipe, air compressor, laundry faucet, extended shower-head and hose, natural gas line and irrigation applications, etc.

Rank No. #13

Anderson Metals 56122 -06 Brass Pipe Fitting, Hex Nipple, 3/8" x 3/8" NPT Male Pipe

Hex nipple for connecting two threaded pipes or fittings
Male NPT threads for connecting to female threaded pipes
Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
Operating temperature range of -65 to +250 degrees F
Meets ASTM B584 standards for quality assurance and ASME/ASMI B16 technical specifications

Rank No. #14

Legines Brass Hex Nipple 3/8" NPT Male x 3/8" NPT Male Straight Pipe Connector Fitting 1200psi ( 2 pcs )

Rank No. #15

Litorange 2 Pack Metals Brass Pipe Fitting Straight Connector Adapter, Reducing Hex Nipple, 1/2" NPT Male x 3/8" NPT Male

★ 【Material】: Heavy Duty Brass,strong, corrosion resistance and durable. Connection: 1/2" NPT Male x 1/2" NPT Male connector. (NPT: American Nation Standard Taper Pipe Threads.)
★ 【Firm And Durable】: Litorange Brass for corrosion resistance, high temperature ductility and low magnetic permeability. Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F).
★ 【Function】: Hex nipple for connecting two threaded pipes and fittings， extending pipe length. It can also be used with grease, fuels, LP and natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections
★ 【Fixation And Easy】: Standard NPT threads allows the fittings to be better engaged with the object to enhance fixation, and the smoother threads make installation easier and faster.
★ 【Package Include】: 2 PCS 1/2"(OD:20mm) x 3/8" NPT(OD:15 mm,ID:7mm,Length:33mm) connector. Comes with 1 year warranty.Please check the connectors before buying.

Rank No. #16

Anderson Metals - 38300-0645 38300 Red Brass Pipe Fitting, Nipple, 3/8" x 3/8" NPT Male, 4-1/2" Length

package dimensions :13.208 cm L x 1.524 cm W x 1.27 cm H
Nipple for connecting two threaded pipes
Male National Pipe Taper (NPT) threads for connecting to female threaded pipes
package weight :1.0lbs
country of origin :China

Rank No. #17

SUNGATOR Brass Pipe Fittings, 3/8" NPT x 3/8" NPT Male Pipe Hex Nipple Adapter, 3/8'' NPT Equal Hex Nipple Connector, Brass Pipe Fittings for Oil, Natural Gas, Air Lines, Refrigeration (2-Pack)

【SIZE CHECK & NPT THREADS TYPE】: 3/8" NPT x 3/8" NPT Male Threads Size. ATTENTION: These hex nipples are NPT tapered threads type, not compression threads! Compression Threads ≠ NPT Threads, they are two different thread types. Please check if the size fits your needs before purchase.
【SOLID BRASS】: SUNGATOR 3/8'' hex nipples is firm and durable with longer service life as these plumbing pipe fittings are made of solid brass not cast products. Brass construction for high corrosion resistance, temperature ductility and low magnetic permeability, they can withstand up to 100 °C(212 °F) and 300 PSI.
【PRECISE THREADS】: Deeper threads design allows these brass pipe fittings to be better engaged with the object to enhance fixation, and the smoother threads make installation easier and faster. Note: Brass fittings are not allowed by federal law to be installed for potablewater use in the U.S.A. and its territories
【VERSATILE APPLICATION】: SUNGATOR hex nipple adapters for connecting two female threaded pipes or fittings with same size, it can also served as pipe extension connector. Widely used in gas, oil, fuels, grease, LP, natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections
【PACKAGE INCLUDE】: 3/8" NPT x 3/8" NPT Male hex nipple adapter × 2. These equal hex nipple connectors meet specifications ASTM B584 and ASME/ANSI B16.

Rank No. #18

Quickun 304 Stainless Steel Nipple Pipe Fitting, 3/8" NPT x 3/8" NPT Male Malleable Nipple Cast Pipe 4" Length

304 Stainless Steel, ductility at high temperatures, and low magnetic permeability.
Size: 3/8" NPT x 3/8" NPT male thread, 4" length(100mm).
Usage: Pipe threads are common to common pipes and easy to replace and install.
It is a good choice for laying pipe in DIY home building, industrial vintage style furniture.
Operating temperature: range from -65 to 250 degrees F.

Rank No. #19

DERNORD 2 Packs Stainless Steel Ball Valve Female x Male with Male Hex Nipple (3/8” NPT)

INCLUDES:Two 3/8" F&M mini ball valves and two 3/8” Male Hex Nipples
HIGH QUALITY: SUS304 body for extra strength and corrosion resistance
INLINE VALVE: Inline valve for connecting two pipes going in the same direction with Double-seal system
1/4 TURN SHUT-OFF:Heavy duty stainless handle , fast 1/4 turn open or closed operation
HEX NIPPLE:The hexagonal shape allows for increased leverage during installation and disassembly with wrench.

Rank No. #20

(6-Pack) Besosay 3/8" NPT Brass Hex Nipple Coupler Pipe Fitting, 3/8''x3/8'' NPT Male Thread Adapter Connector

✅ Function - The 3/8" x 3/8" NPT male brass pipe fitting is an adapter for connecting two NPT female threaded pipes.
✅ NO RUSTING MATERIAL - This 3/8" NPT nipple is made of high quality durable brass for corrosion resistance, high temperature ductility and low magnetic permeability. Can be used in wet environments; it can also be used with grease, fuels and natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections.
✅ EASY INSTALLATION - The deep threads design makes fittings bite better, engaged with the object to enhance fixation, no leaking, not easy to slip. Easier and faster installation.
✅ OPERATION PRESSURE & TEMPERATURE - Max. Pressure: 120 PSI ,Temperature range：-65 to 250 F.
✅ PLEASE TAKE NOTICE - This pipe fitting can not be installed for potable water use. And, NPT thread size does not actual diameter, it is only nominal pipe size.

Last update on 2023-08-01 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

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The Best 3/8 Nipple of 2023 – Reviewed and Top Rated

How Do You Buy The Best 3/8 Nipple?

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