Top Straight Tube Fittings for Industrial Applications

The best Straight Tube Fittings includes LUMAX LX-3505-10 Grease Fitting (Pack of 10), Brennan Steel JIC Flared Tube Fitting, HongBoW 5 Pcs 1/4" NPT Male Pipe Plug and many others as mentioned below.

1

LUMAX LX-3505-10 Grease Fitting (Pack of 10)

  • Pack of 10 high-quality grease fittings.
  • Gold/Silver drive type for easy installation.
  • Straight design for seamless operation.
  • 0.50-inch length fits standard specifications.
  • Corrosion-resistant passivated finish ensures durability.
  • Heavier wall thickness for added strength.
  • Ball check prevents dirt ingress effectively.
  • Average Rating out of 5:
  • Price Range: $9.37
2

Brennan Steel JIC Flared Tube Fitting

  • Durable steel construction ensures rust resistance.
  • Connects JIC flared and NPTF male fittings.
  • Designed for high-pressure applications up to 5000 psi.
  • Operating temperature range: -63 to 400 F.
  • Easy installation for various plumbing needs.
  • Straight design for efficient fluid flow.
  • Ideal for industrial and automotive applications.
  • Average Rating out of 5:
  • Price Range: $8.99
  • Size: 1" x 1-1/2-11-1/2,1" x 1-1/4-11-1/2,1-1/2" x 1-1/2-11-1/2,1-1/2" x 1-1/4-11-1/2,1-1/2" x 2-11-1/2,1" x 1/2-14,1-1/4" x 1-1/4-11-1/2,1-1/4" x 1-11-1/2,1/2" x 1/4-18,1/2" x 1-11-1/2,1/2" x 3/8-18,1/4" x 1/2-14,1/4" x 1/4-18,1/4" x 1/8-27,3/4" x 1-1/4-11-1/2
  • Color: Silver
  • Material: Steel
3

HongBoW 5 Pcs 1/4" NPT Male Pipe Plug

  • Durable 304 stainless steel construction for longevity.
  • 1/4" NPT male thread for secure connections.
  • Maximum pressure rating of 600 psi.
  • Temperature range: -100 to +660 degrees ℉.
  • Includes five pipe plugs per package.
  • Outer hex design for easy installation.
  • Perfect for various plumbing applications.
  • Average Rating out of 5:
  • Price Range: $6.99
  • Size: ‎SS Outer Hex 1/4 NPT
  • Material: Stainless Steel
4

Legines 3/8" NPT Brass Pipe Nipple (2-Pack)

  • Durable brass construction for long-lasting use.
  • 3/8" NPT male threads for secure connections.
  • 1-1/2" length extends pipe reach effectively.
  • 1200psi operating pressure exceeds general fittings.
  • Suitable for temperatures from -53 to 121 degrees C.
  • Not for potable water use due to lead content.
  • Meets SAE standards for quality assurance.
  • Average Rating out of 5:
  • Price Range: $7.99
  • Size: ‎3/8 Inch,‎0.375 inch
  • Material: Brass
5

John Guest 3/8" Tube to 1/2" NPTF Adaptor (10 Pack)

  • Straight adapter for connecting different pipe types.
  • Push-to-connect design for easy installation.
  • Acetal copolymer material for durability.
  • High tensile and flexural strength.
  • Works under pressure up to 150 psi.
  • Meets NSF/ANSI quality standards 14, 51, 61.
  • Pack of 10 for convenience and value.
  • Average Rating out of 5:
  • Price Range: $53.99
  • Color: Gray
  • Material: Acetal
6

LockNLube Stainless Steel Grease Fittings Set (LNL140)

  • Premium stainless steel construction for durability.
  • Includes 40 grease fittings for versatile applications.
  • Variety of angles for hard-to-reach spots.
  • 1/4” - 28 SAE and 1/8” - 27 PTF sizes.
  • Easy to install and maintain grease fittings.
  • Ideal for automotive and industrial use.
  • Corrosion-resistant for long-lasting performance.
  • Price Range: $45.00
7

HongBoW Hardware 3pcs Brass BSP to NPT Adapter

  • Durable solid brass construction for longevity.
  • Corrosion-resistant material for reliable performance.
  • High temperature tolerance up to 100 °C.
  • Deep threads ensure secure, leak-proof connections.
  • Ideal for BSP to NPT conversions.
  • Package includes three quality adapters.
  • Not suitable for drinking water applications.
  • Average Rating out of 5:
  • Price Range: $14.99
  • Size: ‎3/8" BSPT X 3/8" NPT,‎3/8
  • Material: Brass
8

Rainbow Dream PVC Male Adapter (10 Pack)

  • High impact strength for pressure applications.
  • Convenient 10-pack for easy project completion.
  • Non-toxic, lightweight, and easy to install.
  • Excellent sound deadening and corrosion resistance.
  • Suitable for cold-water distribution systems.
  • Meets ASTM and NSF compliance standards.
  • Installs with primer and solvent cement easily.
  • Average Rating out of 5:
  • Price Range: $14.99
  • Size: ‎1 Inch,‎1 inch
  • Material: Polyvinyl Chloride
9

Brennan Steel JIC Flared Tube Fitting

  • Durable steel construction for rust resistance.
  • JIC flared male connector for reliable connections.
  • O-ring boss provides a secure seal.
  • Compatible with various pipe types and sizes.
  • Operating temperature: -63 to 400 degrees F.
  • Meets SAE J514 quality standards.
  • Straight fitting design for easy installation.
  • Average Rating out of 5:
  • Price Range: $4.12
  • Size: 1 Count (Pack of 1),1" x 1-1/16-12,1-1/2" x 1-5/8-12,1-1/2" x 1-7/8-12,1-1/4" x 1-5/16-12,1-1/4" x 1-7/8-12,1" x 1-5/8-12,1" x 1-5/16-12,1" x 1-7/8-12,1/2" x 1-1/16-12,1/2" x 1-5/16-12,1/2" x 9/16-18,1/4" x 1-1/16-12,1/4" x 3/4-16,1/4" x 3/8-24,1/4" x 5/1
  • Material: Steel
10

TAISHER 5PCS Stainless Steel Reducer Adapter

  • 5PCS stainless steel reducer adapter kit.
  • 304 stainless steel for enhanced durability.
  • Connector for 3/8" Male to 3/4" Female NPT.
  • Resistant to corrosion and high temperatures.
  • Maximum working pressure of 150PSI.
  • Ideal for various industrial piping applications.
  • Nominal size, actual diameter may vary.
  • Average Rating out of 5:
  • Price Range: $14.69
  • Size: 1/2" MNPT x 1/2" FNPT(Hex),1/2" MNPT x 1/2" FNPT(NEW),1/2” MNPT x 1/2“ FNPT,1/2" MNPT x 3/4" FNPT(Hex),1/2" MNPT x 3/4" FNPT(NEW),1/2” MNPT x 3/4“ FNPT,1/4" MNPT x 1/2" FNPT(NEW),1/4” MNPT x 1/2“ FNPT,1/4" MNPT x 1/4" FNPT(Hex),1/4" MNPT x 1/4" FNPT(NEW),
  • Material: Stainless Steel
11

Pysrych 1-1/4" NPT Stainless Steel Long Nipple

  • Durable stainless steel 304 construction.
  • 1-1/4" NPT male threads for easy connection.
  • 4" length for extended reach in piping.
  • Rated for 1000psi working pressure.
  • Ideal for connecting and terminating pipes.
  • Controls flow and changes piping direction.
  • Corrosion-resistant for long-lasting performance.
  • Average Rating out of 5:
  • Price Range: $22.99
  • Size: ‎1-1/4" NPT Male x 1-1/4" NPT Male,‎1.25 inch
  • Material: Stainless Steel
12

Legines 1/8" NPT Brass Pipe Fittings (2 Pcs)

  • 1/8" NPT male threads for secure connections.
  • Includes two durable brass fittings for versatility.
  • 3" length extends pipe connections effectively.
  • Corrosion-resistant brass for long-lasting use.
  • Operating temperature from -53 to 121 degrees C.
  • Not for potable water installations in the U.S.A.
  • Ideal for high-temperature and low-magnetic applications.
  • Average Rating out of 5:
  • Price Range: $8.49
  • Size: ‎1/8×3",‎0.125 inch
  • Material: Brass
13

Goldpea 1/4" NPT Male Hex Nipple (2pcs)

  • Durable forged stainless steel construction.
  • High pressure rating of 3000 psi.
  • Nominal 1/4" NPT male thread size.
  • Corrosion resistant for longevity.
  • Ideal for connecting same-size pipes.
  • Maximum working temperature of 500℃/932℉.
  • Includes two equal hex nipples.
  • Average Rating out of 5:
  • Price Range: $7.29
  • Material: Stainless Steel
14

PATIKIL PVC Reducer Socket 3.5x2.5 Inch

  • High-strength PVC construction for durability.
  • Weather and moisture resistant for long life.
  • Easy installation with standard PVC glue.
  • Ideal for various plumbing applications.
  • Compact size fits multiple pipe diameters.
  • Lightweight design for easy handling.
  • Not compatible with standard ANSI, SCH pipes.
  • Average Rating out of 5:
  • Price Range: $14.99
  • Size: ‎3.5x2.5"
  • Material: PVC
15

+GF+ PVC Schedule 80 Flange, 1-1/2" NPT

  • Flange for connecting pipes and valves.
  • Female NPT threads for secure connections.
  • PVC construction for chemical resistance.
  • Lightweight compared to metal fittings.
  • Operating temperature range: 0 to 60°C.
  • Meets ASTM D1784 and D1785 standards.
  • NSF certified for potable water service.
  • Average Rating out of 5:
  • Price Range: $46.98
  • Color: Gray
  • Material: PVC
16

BesNPT 1/2" Stainless Steel Nipple (3-Pack)

  • Durable 304 stainless steel construction.
  • Resistant to rust and corrosion.
  • Maximum pressure: 2800 psi / 19.3 Mpa.
  • Temperature range: -500°F to 800°F.
  • Deep, accurate threading for secure connections.
  • Versatile for plumbing, gas, and hydraulic applications.
  • Includes three high-quality fittings in one pack.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Size: ‎1/2" NPT Male,‎0.5 inch
  • Material: 304 stainles steel
17

Generic M8x1mm Grease Zerk Fitting (20 Pack)

  • Includes 20 M8x1mm grease zerk fittings.
  • Durable and corrosion-resistant construction for longevity.
  • Flush straight design for easy installation.
  • Compatible with various machine tools and equipment.
  • Ensures efficient lubrication for optimal performance.
  • Metric male thread for secure connections.
  • Ideal for automotive and industrial applications.
  • Price Range: $12.57
18

FITOK 316 Stainless Steel DP Transmitter Fitting

  • Connects to differential pressure transmitters easily.
  • Precision crafted from durable 316 stainless steel.
  • Supports maximum working pressure of 10200 psi.
  • Simplifies calibration process for efficient operation.
  • Easy to connect and disconnect during calibration.
  • Compatible with 1/4" tube OD connections.
  • Features 5/16-24 male SAE/MS straight thread.
  • Price Range: $43.60
  • Material: 316 Stainless Steel
19

Bothwell Carbon Steel Half Coupling 1 1/4"

  • Durable carbon steel A105 construction.
  • 1 1/4" NPT female pipe thread.
  • 1 1/4" weld-on design for versatile applications.
  • Suitable for industrial and automotive uses.
  • Aerospace applications requiring high pressure.
  • Handles working pressure up to 3000 psi.
  • Round body size for easy installation.
  • Price Range: 0
  • Size: ‎1.25 inch
  • Material: Forged,Carbon Steel
20

PATIKIL 1/8" Copper Tube Coupling (5 Pcs)

  • Durable copper construction for long-lasting performance.
  • High temperature and corrosion resistance properties.
  • Designed for 3mm OD copper tubing coils.
  • Ideal for refrigeration and air conditioning systems.
  • Facilitates efficient heat exchange in applications.
  • Includes 5 fittings for convenient use.
  • Compact size: 29mm length for easy installation.
  • Price Range: $7.19
  • Size: ‎1/8inch(3mm) x 29mm
  • Color: Advantage
  • Material: Copper
21

+GF+ PVC Schedule 80 Van-Stone Flange

  • Durable PVC construction for long-lasting performance.
  • Van Stone design for easy pipe connection.
  • Female NPT threads for secure fittings.
  • Lightweight compared to metal fittings.
  • Resistant to chemicals and corrosion.
  • Operating temperature: 0 to 60 degrees C.
  • Meets ASTM and NSF standards for safety.
  • Average Rating out of 5:
  • Price Range: $21.34
  • Color: Gray
  • Material: PVC
22

Pysrych 1" x 1/2" Stainless Steel Hex Nipple

  • Stainless Steel 304 construction for durability.
  • 1" NPT Male and 1/2" NPT Male ends.
  • Hexagonal shape for easy wrench use.
  • Rated working pressure up to 3000psi.
  • Maximum temperature tolerance: 500℃/932℉.
  • Ideal for connecting different size pipes.
  • Reliable and strong for various applications.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Size: ‎1" Mnpt x 1/2" Mnpt,‎1 inch
  • Material: Stainless Steel
23

Kindsion Brass 2" NPT Hex Nipple Fitting

  • Durable brass construction for long-lasting use.
  • Connects two 2-inch NPT female threaded pipes.
  • Includes PTFE tape for leak prevention.
  • Temperature range: -65 ℉ to 250 ℉.
  • Suitable for air, fuel, gas, and water.
  • Resistant to rust and corrosion.
  • Not for potable water supply systems.
  • Price Range: 0
  • Size: ‎2" Male x 2" Male,‎2 inch
  • Material: Brass
24

FLOFLEX Brass Reducer (5 Pack) 1/2" x 3/8"

  • 1/2" Female x 3/8" Male NPT brass reducer.
  • Set includes five durable brass fittings.
  • Corrosion-resistant high-quality brass alloy material.
  • Perfect for gas, refrigeration, and hydraulic systems.
  • 250 PSI maximum operating pressure capability.
  • Temperature range: -65° to 250° F.
  • Pipe sealant recommended for maximum leak resistance.
  • Price Range: $12.49
  • Size: ‎1/2" Female NPT x 3/8" Male NPT
  • Material: Brass
25

FLOFLEX Brass Reducing Hose Adapter (2 Pcs)

  • Durable brass construction ensures long-lasting performance.
  • Includes two reducing adapters for convenience.
  • 3/8" Female NPT to 1/8" Male NPT fitting.
  • Compatible with various pipe materials.
  • Ideal for gas, oil, and water applications.
  • Pressure rating up to 250 PSI.
  • Recommended with pipe sealant for leak resistance.
  • Price Range: 0
  • Color: Brass
  • Material: Brass
26

HongBoW Brass NPT Pipe Fitting Adapter

  • Durable brass construction for long-lasting use.
  • 3/8" male to female NPT adapter.
  • Corrosion-resistant for reliable performance.
  • Operating temperature from -65°F to 250°F.
  • Precision threads ensure secure connections.
  • Includes three fittings in one package.
  • Ideal for plumbing and HVAC applications.
  • Average Rating out of 5:
  • Price Range: $9.99
  • Size: 1" NPT Male x 1" BSPP Female,SS Bushing 1" NPT Male x 1/2" NPT Female,1/2 BSPT Male x 1/2 NPT Female,1/2 NPT Male x 1/2 BSPP Female,1/2 NPT Male x 1/2 NPT Female,SS Adapter 1/2 MNPT x 1/2 BSPP Female,SS Adapter 1/2 MNPT x 1/2 FNPT,SS Bushing 1/2" NPT Male
  • Material: Brass
27

Duda Energy 1/4" Male NPT Pipe Fittings (2 Pack)

  • 1/4" Male NPT for versatile applications.
  • Two-pack for convenient multiple installations.
  • Made from high-quality 304 stainless steel.
  • Excellent corrosion resistance for harsh environments.
  • Temperature resistant for various thermal conditions.
  • Durable construction ensures long-lasting performance.
  • Meets industry standards for seamless integration.
  • Average Rating out of 5:
  • Price Range: $10.09
  • Size: ‎1/4" Male
  • Material: Stainless Steel
28

Lumax LX-3101 Extra Short Grease Fittings (100 Pack)

  • Perfect for heavy industries and agricultural equipment.
  • Passivated finish resists corrosion effectively.
  • Heavier wall thickness enhances durability and strength.
  • Stress relieved for improved performance and longevity.
  • Tempered carbon steel construction for robust reliability.
  • Ball check prevents dirt entry into fittings.
  • Convenient pack of 100 fittings for various uses.
  • Average Rating out of 5:
  • Price Range: $47.47
  • Color: Gold/Silver
  • Material: Carbon Steel