20 Best 5/8-18 Male To 1/4 Npt Female [2024]

Are you looking for the best 5/8-18 Male To 1/4 Npt Female? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling 5/8-18 Male To 1/4 Npt Female.

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1 Inline Tube (E-10-12) Brass Adapter Male 1/4' Npt to Female 5/8'-18 Inverted Flare Inline Tube (E-10-12) Brass Adapter Male 1/4" Npt to Female 5/8"-18 Inverted Flare
2 Water Hose Adaptor 5/8'-18 LH Female x 1/4' NPT Male for Water-Cooled TIG Torches Recirculating... Water Hose Adaptor 5/8"-18 LH Female x 1/4" NPT Male for Water-Cooled TIG Torches Recirculating...
3 MENSI 2 Packs 3/8' Male Flare Thread (5/8'-18UNF) Convert to 3/8' Male NPT Thread Propane BBQ Grill... MENSI 2 Packs 3/8" Male Flare Thread (5/8"-18UNF) Convert to 3/8" Male NPT Thread Propane BBQ...
4 Boeray 2pcs Brass Fitting, 90 Degree Barstock Street Elbow, 1/4' NPT Male Pipe to 1/4' NPT Female... Boeray 2pcs Brass Fitting, 90 Degree Barstock Street Elbow, 1/4" NPT Male Pipe to 1/4" NPT Female...
5 Anderson Metals - 56120-0604 Brass Pipe Fitting, Adapter, 1/4' Male Pipe x 3/8' Female Pipe Anderson Metals - 56120-0604 Brass Pipe Fitting, Adapter, 1/4" Male Pipe x 3/8" Female Pipe
6 Metalwork 304 Stainless Steel Forged Pipe Fitting Converter Adapter, G 1/4“ Female Thread to 1/4'... Metalwork 304 Stainless Steel Forged Pipe Fitting Converter Adapter, G 1/4“ Female Thread to...
7 Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression... Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression...
8 Milton (S-716) 1/4' Male NPT M Style (Industrial) Air fitting Quick Connect Coupler Red Milton (S-716) 1/4" Male NPT M Style (Industrial) Air fitting Quick Connect Coupler Red
9 Robert Manufacturing - R435-6 R435 Series Bob Brass Adaptor, 5/16'-18 SAE Male x 1/4'-20 SAE Female Robert Manufacturing - R435-6 R435 Series Bob Brass Adaptor, 5/16"-18 SAE Male x 1/4"-20 SAE Female
10 Gasher 12PCS Brass Hex Bushing Fitting Kit Hex Bushing 1/4' - 1/8', 3/8' - 1/8', 3/8' - 1/4', 1/2' -... Gasher 12PCS Brass Hex Bushing Fitting Kit Hex Bushing 1/4" - 1/8", 3/8" - 1/8", 3/8" - 1/4", 1/2"...
11 KOOTANS 4pcs Heavy Duty 1/4 NPT Male Thread to 1/8 NPT Female Thread Brass Reducer Hex Bushing Brass... KOOTANS 4pcs Heavy Duty 1/4 NPT Male Thread to 1/8 NPT Female Thread Brass Reducer Hex Bushing...
12 Legines NPT Bushing 1/4' Male x 1/8' Female Reducing Adapter Hex Head Pipe Fitting 1200psi (Pack of... Legines NPT Bushing 1/4" Male x 1/8" Female Reducing Adapter Hex Head Pipe Fitting 1200psi (Pack...
13 Aluminum -6AN AN6 Male Flare to 5/8 x 18 Male Thread Inverted Seat Adaptor Fittings Male Inv Flare... Aluminum -6AN AN6 Male Flare to 5/8 x 18 Male Thread Inverted Seat Adaptor Fittings Male Inv...
14 Anderson Metals 54048-0604 Brass Tube Fitting, Half-Union, 3/8' Flare x 1/4' Male Pipe Anderson Metals 54048-0604 Brass Tube Fitting, Half-Union, 3/8" Flare x 1/4" Male Pipe
15 Nigo Industrial Co. Brass Pipe Fitting, Hex Bushing Reducer, Nominal Pipe Size: 3/8' NPT Male x 1/4'... Nigo Industrial Co. Brass Pipe Fitting, Hex Bushing Reducer, Nominal Pipe Size: 3/8" NPT Male x...
16 Western Enterprises AW-15A Inert Arc Adaptors, 200 PSIG, Brass, B-Size, 1/4' (NPT), Inert Gas,... Western Enterprises AW-15A Inert Arc Adaptors, 200 PSIG, Brass, B-Size, 1/4" (NPT), Inert Gas,...
17 MENSI 1/4' Quick Connect Propane Disconnect Universal Adapter Kit Convert Regulator with 3/8' Female... MENSI 1/4" Quick Connect Propane Disconnect Universal Adapter Kit Convert Regulator with 3/8"...
18 1/4 Inch Male to 3/8 Inch Female Tripod Screw Adapter 3/8 to 1/4 Tripod Adapter Mount Screws,... 1/4 Inch Male to 3/8 Inch Female Tripod Screw Adapter 3/8 to 1/4 Tripod Adapter Mount Screws,...
19 Anderson Metals - 56123-0806 Brass Pipe Fitting, Reducing Hex Nipple, 1/2' Male Pipe x 3/8' Male... Anderson Metals - 56123-0806 Brass Pipe Fitting, Reducing Hex Nipple, 1/2" Male Pipe x 3/8" Male...
20 KOOTANS 1/4 NPT x 1/8 NPT Male Solid Brass Nipples, Heavy Brass Pipe Adapter Fittings Hex Reducing... KOOTANS 1/4 NPT x 1/8 NPT Male Solid Brass Nipples, Heavy Brass Pipe Adapter Fittings Hex...
Bestseller No. 1
Inline Tube (E-10-12) Brass Adapter Male 1/4" Npt to Female 5/8"-18 Inverted Flare
  • Used On Transmission Lines, Radiator Ends
  • Solid Brass Brake Line Adapter
  • Male 1/4" NPT To A Female 5/8-18 Inverted Flare 3/8" Tubing
  • SAE Thread Size 1/4 NPT Male, 5/8-18 Female
Bestseller No. 2
Water Hose Adaptor 5/8"-18 LH Female x 1/4" NPT Male for Water-Cooled TIG Torches Recirculating...
  • High-Quality TIG Water Hose Extension, TIG Water Line Hose Coupler and, TIG Water Line Hose Coupler
  • 40V76L Hose is used to extend Tig water lines from and to water recirculating coolers. 11N18 Coupler is used to attach two Tig water hoses together....
  • ⅝”-18LH Male and Female connectors fit most of American Water-Cooled TIG Torches and water hoses with ⅝”-18LH fittings.
  • This Hose can also be used to connect Water-Cooled TIG Dinse Plugs Connectors with a water line to the water cooling system. (A combination of 10V76L...
Bestseller No. 3
MENSI 2 Packs 3/8" Male Flare Thread (5/8"-18UNF) Convert to 3/8" Male NPT Thread Propane BBQ Grill...
  • 3/8" Male NPT X3/8" Male Flare Thread
  • Made of brass more durable
  • Suitable for Grill, Heater, Fireplace or Rv trailer adapter
  • 2pcs/Pack save more
  • Easy install by wrench
SaleBestseller No. 4
Boeray 2pcs Brass Fitting, 90 Degree Barstock Street Elbow, 1/4" NPT Male Pipe to 1/4" NPT Female...
  • Adapts 1/4" NPT male end to 1/4" tube size female end at a 90-degree angle
  • Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
  • For use with LP and natural gas, refrigeration, and hydraulic applications
  • Meets specifications ASTM B584 and ASME/ANSI B16 for quality assurance
  • The operating temperatures for this fitting range from -53 to 121 degrees C (-65 to 250 degrees F).
SaleBestseller No. 5
Anderson Metals - 56120-0604 Brass Pipe Fitting, Adapter, 1/4" Male Pipe x 3/8" Female Pipe
  • Adapter for connecting pipes or fittings of different types
  • Male National Pipe Taper (NPT) threads on one end and female NPT threads on the other for connecting pipes with different ends
  • 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
Bestseller No. 6
Metalwork 304 Stainless Steel Forged Pipe Fitting Converter Adapter, G 1/4“ Female Thread to 1/4"...
  • Convert G thread pipe or fitting to NPT thread pipe of fitting;
  • G Female threads on one end and male NPT threads on the other end
  • Made of 304 stainless steel for resistance to corrosion
  • Max Pressure: 16MPa/2320psi;
  • Working Temperature Range: -50℃~+200℃/-58℉~+392℉
Bestseller No. 7
Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression...
  • 【STANDARD SIZE】G 1/2 female x G 3/8 male adapter is regular US size, suitable for most pipe size with 3/8" converting to 1/2" angle stop. Solve...
  • 【NO LEAKAGE】Compression adapter comes with rubber seal gasket, just tighten with the gasket provided and no leaks. No Teflon tape needed. As a...
  • 【WIDELY APPLICATION】Our faucet supply line adapter can be used in the kitchen, bathroom sink, dishwasher, hot water heater, etc. It is a perfect...
  • 【STURDY AND DURABLE】Water hose adapter is made of high-quality brass material and was treated with premium nickel coating. Solid, anti-corrosion,...
  • 【SAFETY】The material of pipe compression fitting adapters are harmless, complied with safety regulations, so they can be used for drinkable water...
Bestseller No. 8
Milton (S-716) 1/4" Male NPT M Style (Industrial) Air fitting Quick Connect Coupler Red
  • M-STYLE: The industry standard coupler. Milton M-style, ColorFit M-style, + red competitor couplers/plugs are all compatible.
  • KWIK-CHANGE: Interchangeable/compatible with most manufacturers. Compliant with military specification MIL-C-4109.
  • NPT: 1/4" male national pipe thread flow size. Durable brass. Buna-N seals.
  • MAXIMUM: 40 standard cubic feet per minute (SCFM). 300 PSI inlet pressure. Temperatures up to 250 degrees F.
  • INCLUDED IN MILTON M-STYLE KITS: #S-221, S-222, MK1669-1, 683-MCPK.
Bestseller No. 9
Robert Manufacturing - R435-6 R435 Series Bob Brass Adaptor, 5/16"-18 SAE Male x 1/4"-20 SAE Female
  • Brass adaptor
  • Adapt female SAE thread floats to stems having male SAE threads
  • Adapt female SAE thread short arms to stems having male SAE threads
  • Not compliant with CA Prop 65 or Safe Water Drinking Act
Bestseller No. 10
Gasher 12PCS Brass Hex Bushing Fitting Kit Hex Bushing 1/4" - 1/8", 3/8" - 1/8", 3/8" - 1/4", 1/2" -...
  • Size - 1/4" - 1/8", 3/8" - 1/8" , 3/8" - 1/4", 1/2" - 1/4", 1/2" - 3/8", 3/4" - 1/2"
  • Material - Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
  • Temperature range - Operating temperatures range from -53 to 121 degrees C (-65 to 250 degrees F)
  • Function - Hex bushing for connecting two pipes or with different diameters
  • Notice - NPT Thread Size is a Nominal Pipe Size, and it Does Not represent the actual diameter
Bestseller No. 11
KOOTANS 4pcs Heavy Duty 1/4 NPT Male Thread to 1/8 NPT Female Thread Brass Reducer Hex Bushing Brass...
  • SIZE - 1/4 NPT male thread to 1/8 NPT female thread hex bushing. PLEASE NOTE, NPT Thread Size is a nominal pipe size and it does not represent the...
  • MATERIAL - Premium forged brass reducer, thicker and stronger, durable, threads are deep and accurate, high corrosion resistance, low magnetic...
  • FUNCTION - Used to connect female and male pipes with different diameters. Apply to plumbing connections, compressed air, hydraulic, gas and other...
  • 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...
  • These 1/4 to 1/8 npt brass reducers contain low-lead, NOT FOR POTABLE WATER.
Bestseller No. 12
Legines NPT Bushing 1/4" Male x 1/8" Female Reducing Adapter Hex Head Pipe Fitting 1200psi (Pack of...
  • Hex bushing for connecting two pipes with different diameters
  • 1/4" Male NPT threads on one end and 1/8" female NPT threads on the other for connecting pipes with different ends
  • Legines pipe fittings are made of CA360 or CA377 brass, not ordinary copper alloy, and meet SAE standard, have dryseal threads, forgings & extruded.
  • Operating pressure of our fittings is up to 1200psi, more higher than other general fittings. Temperatures range from -53 to 121 degrees C (-65 to 250...
  • These fittings contain lead and are not allowed by federal law to be installed for potable water use in the U.S.A. and its territories.
Bestseller No. 13
Aluminum -6AN AN6 Male Flare to 5/8 x 18 Male Thread Inverted Seat Adaptor Fittings Male Inv Flare...
  • Measures JIC -6 AN (9/16-18) male flare to male thread 5/8" x 18 inverted, black
  • Manufactured from high performance lightweight 6061-T6 cnc machined billet aluminum
  • Surface treatment: black anodized finish for long last, durability and strength
  • Designed to ensure the reliability required in a high pressure steering system
  • These adaptors and allow easy connection of AN male fittings to applications where the fitting is required to seal on the inverted seat.
Bestseller No. 14
Anderson Metals 54048-0604 Brass Tube Fitting, Half-Union, 3/8" Flare x 1/4" Male Pipe
  • Half union for connecting and disconnecting two tubes more easily than with a coupling
  • 45-degree flare head tube connection on one side and a male NPT connection on the other
  • Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability
  • Operating temperature range of -65 to +250 degrees F
  • Resists mechanical pullout for a more secure connection
Bestseller No. 15
Nigo Industrial Co. Brass Pipe Fitting, Hex Bushing Reducer, Nominal Pipe Size: 3/8" NPT Male x 1/4"...
  • 3/8" NPT Male (Actual O.D: 0.675") x 1/4" NPT Female (Actual I.D: 0.440")
  • Please note: NPT Thread Size is a Nominal Pipe Size, and it Does Not represent the actual diameter
  • Max. Pressure: 1000 PSI WOG; Temperatures range from -65 to 250 F
  • Contains low-lead (no more than 2.5%); Not for potable/drinking water use
  • Constructed from extruded bar stock; Use with brass, steel, and iron pipe
Bestseller No. 16
Western Enterprises AW-15A Inert Arc Adaptors, 200 PSIG, Brass, B-Size, 1/4" (NPT), Inert Gas,...
  • Made from brass to ensure functionality and durability
  • Can accommodate up to 200 psi of pressure
  • Size: B-Size
  • Country of origin: United States
Bestseller No. 17
MENSI 1/4" Quick Connect Propane Disconnect Universal Adapter Kit Convert Regulator with 3/8" Female...
  • This is an ideal sets of Quick connect Conversion Kit to convert the regulator on grill to disconnect type easily
  • Great to convert the grill to connect RV extension propane hose with 1/4" Quick plug adapter with 3/8" Female Adapter
  • It can be convert most of grill with 3/8" Male flare fitting after remove the regulator. Suitable for Blackstone 28” and 36” Outdoor...
  • The Kit is works for low pressure application only with 1/4" male plug and female NPT Thread
  • The Kit includes: 1 of 3/8" Female Flare x 1/4" quick Plug adapter, 1 of 3/8" Male flare x 1/4" NPT male Fitting, 1 of 1/4" Quick Shut off control...
Bestseller No. 18
1/4 Inch Male to 3/8 Inch Female Tripod Screw Adapter 3/8 to 1/4 Tripod Adapter Mount Screws,...
  • The tripod screw adapter, precision made 1/4" male to 3/8" male screw adapters (3 pcs) and 1/4" to 3/8" nut screw adapter (3 pcs). Standard size,...
  • The camera mount screws can putting two photo equipment devices together, help you gain more rig combination possibility and freedom in your photo...
  • The 1/4 to 3/8 tripod mount screw adapter nut screws made of high metal materials, light weight and solid; others adapters are made of metal, silver...
  • The tripod thread screw adapter has wide application. Fit for most dslr camera/ tripod/ monopod / ball head /flash light stand/ shoulder rig camera...
  • 1/4 to 3/8 adapters thread adapter, package including:3 screw adapters+3 nut screw adapters
Bestseller No. 19
Anderson Metals - 56123-0806 Brass Pipe Fitting, Reducing Hex Nipple, 1/2" Male Pipe x 3/8" Male...
  • Reducing hex nipple for connecting two threaded pipes with different diameters
  • 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
Bestseller No. 20
KOOTANS 1/4 NPT x 1/8 NPT Male Solid Brass Nipples, Heavy Brass Pipe Adapter Fittings Hex Reducing...
  • SIZE - 1/4 NPT to 1/8 NPT male brass hex nipples. PLEASE NOTE, NPT Taper Thread Size is a nominal pipe size and it does not represent the actual...
  • MATERIAL - Premium solid brass nipple, thicker and stronger, durable, threads are deep and accurate, high corrosion resistance, low magnetic...
  • FUNCTION - Used to connect female pipes with different diameters, or extending the pipe length. Apply to plumbing connections, compressed air,...
  • 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...
  • NPT TAPER THREAD - The standard NPT taper threads allow the brass fittings better mesh with the object, strengthen the fixation to prevent leakage....

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FAQ:

Q: What is a 1/8 NPT sensor adapter?

A: GlowShift’s 1/8 NPT Female to 5/8-18 Male Adapter will allow you to thread any 1/8 gauge sensor into a 5/8-18 thread port. This brass sensor adapter is ideal for oil pressure and fuel pressure sensors that will not thread into your stock port.

Q: What is the glowshift 1/8 NPT to 5/8-18 adapter?

A: Help others learn more about this product by uploading a video! GlowShift’s 1/8 NPT Female to 5/8-18 Male Adapter will allow you to thread any 1/8 gauge sensor into a 5/8-18 thread port. This brass sensor adapter is ideal for oil pressure and fuel pressure sensors that will not thread into your stock port.

Q: What are the dimensions of the NPT fittings?

A: Fitting, Adapter, Inverted Flare to NPT, 90 Degree, Brass, Natural, 3/8-24 in. Inverted Flare, 1/8 in. NPT, Each Fitting, Adapter, Inverted Flare to NPT, Straight, Stainless Steel, Natural, 1/8 in. NPT, 10mm x 1.0 Inverted Flare, Each Fitting, Adapter, Inverted Flare to NPT, Straight, Brass, Natural, 5/8-18 in. Inverted Flare, 3/8 in. NPT, Each

Q: How big is the flare on a NPT adapter?

A: Fitting, Adapter, Inverted Flare to NPT, 90 Degree, Brass, Natural, 3/8-24 in. Inverted Flare, 1/8 in. NPT, Each Fitting, Adapter, Inverted Flare to NPT, Straight, Stainless Steel, Natural, 1/8 in. NPT, 10mm x 1.0 Inverted Flare, Each