18mm Tube Adapters | McMaster-Carr

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A Adapters AC Adapters Aerator Adapters Aluminum BSPT-to-NPT Pipe Adapters Apple iPad-Compatible Power Adapters Apple iPhone-Compatible Power Adapters Apple-Compatible Power Adapters Arbor Adapters Audio Adapters AWB Adapters AWS Adapters Banana Adapters Barbed Flared Tube Adapters Barbed Vacuum Tube Adapters Barrel Jack Adapters Barrel Plug Adapters Battery Adapters Battery Terminal Adapters Bayonet Adapters Bearing Adapters Beveler Adapters Bit Adapters BNC Adapters Bolt Adapters Bore Adapters Box Adapters Brass BSPP-to-NPT Pipe Adapters Brass BSPT-to-NPT Pipe Adapters Brass Pipe-to-Pipe Swivel Adapters Brass Tube-to-Pipe Swivel Adapters British Instantaneous Thread Adapters BSPP-to-NPT Pipe Fitting Adapters Bung Adapters

Barrel Bung Adapters Drum Bung Adapters

Bushing Adapters Buttress Adapters Butt-Weld Compression Tube Adapters Butt-Weld Vacuum Tube Adapters Caliper Adapters Can Trigger Adapters

Aerosol Can Trigger Adapters Spray Can Trigger Adapters

C-Face Motor Adapters Chuck Adapters Coarse-to-Fine Thread Adapters Coaxial Adapters Collet Adapters Compression Adapters Compression Fitting Adapters Compression Vacuum Tube Adapters Computer Adapters Computer Cable Adapters Computer Cable Gender Adapters Computer Cord Adapters Conduit Adapters Conduit Metric Thread Adapters Cone Adapters Coupling Nut Thread Adapters Data Cable Testing Adapters Data Cord Adapters DB Adapters DC Adapters Desktop Computer Power Adapters DIN Panel Adapters DIN Rail Mounting Adapters DisplayPort Adapters DMX Adapters Dog Bone Wrench Adapters Drill Adapters

Blind Rivet Drill Adapters Multi-Angle Drill Adapters Right-Angle Drill Adapters Rivet Drill Adapters Small-Hole Drill Adapters

Drill Bit Adapters

Core Drill Bit Adapters Hilti-Compatible Drill Bit Adapters Masonry Drill Bit Adapters Rotary-Hammer Drill Bit Adapters

Drill Chuck Adapters

Jacobs Taper Adapters Rotary-Hammer Chuck Adapters

Drive Adapters Drum-Plug Adapters Dryer Hose Adapters Duct Adapters

Galvanized Steel Duct Adapters

DVI Adapters E Adapters Electrical Adapters EMC Adapters EMI Adapters End Mill Adapters Ethernet Adapters European Plug Adapters Extension Cord Adapters F Adapters Faucet Adapters Feedthrough Adapters Feedthrough USB Adapters Fiber-Optic Adapters Flange Adapters Flared Compression Tube Adapters Flared Vacuum Tube Adapters Flexible Bit Adapters Flexible Duct Adapters Flexible Duct Hose Adapters Fuse Adapters Gauge Adapters GFCI Adapters Grease Adapters Grease Fitting Adapters Grease Gun Adapters Grounding Adapters HD BNC Adapters HDMI Adapters High-Misalignment Adapters High-Polish Butt-Weld Tube Adapters High-Polish Sanitary Tube Adapters High-Polish Stainless Steel Tube-to-Pipe Adapters High-Polish Tube Adapters Hole Adapters Hose Adapters

Fire Hose Adapters Garden Hose Adapters Garden Hose Thread Adapters Hose-to-Pipe Adapters Vacuum Hose Adapters Welding Hose Adapters

Hose Bibb Adapters Hose Fitting Swivel Adapters HVAC Adapters Hydraulic Pump Adapters IBC Adapters Impact Driver Adapters Insulated Socket Adapters International Adapters International Outlet Adapters International Plug Adapters International Power Adapters Iron and Steel Pipe-to-Pipe Adapters Iron BSPT-to-NPT Pipe Adapters Kf Adapters Knockout Adapters Lamp Socket Adapters Lathe Chuck Adapters Light Bulb Socket Adapters Machine-Mount Coolant Adapters Mauser Adapters Metal Hose-to-Pipe Adapters Metal Luer Lock Tube-to-Pipe Adapters Metal Push-On Hose-to-Pipe Adapters Metal Push-to-Connect Pipe-to-Tube Adapters Metal Quick-Disconnect Tube-to-Pipe Adapters Metal Tube-to-Pipe Adapters Micro BNC Adapters Micrometer Adapters Microphone Adapters Microphone USB Adapters Mobile Device Power Adapters Morse Taper Adapters Motor Adapters Motor Arbor Adapters NEMA Receptacle Adapters Network Adapters Noncontact Vacuum Lifters for Anti-Slip Adapters Nozzle Adapters Nutdriver Adapters Outlet Adapters

Electrical Outlet Adapters Straight-Blade to Turn-Lock Outlet Adapters

Panel-Mount Coaxial Adapters Panel-Mount DB Adapters Panel-Mount DisplayPort Adapters Panel-Mount USB Adapters PC Power Adapters PFA Adapters Pipe Adapters

Black Iron Pipe Adapters Brass Pipe Adapters Brass Pipe Swivel Adapters BSPT-to-NPT Pipe Fitting Adapters Galvanized Iron Pipe Adapters Iron Pipe Adapters Metric-to-Inch Pipe Fitting Adapters Pipe Swivel Adapters Pipe Thread Adapters Plastic Pipe Adapters PVC Reducing Pipe Adapters Steel Pipe Swivel Adapters

Pipe Fitting Swivel Adapters Pipe Fitting Thread Adapters Pipe O-Ring Adapters Pipe Reducing Adapters Pipe-to-Pipe Adapters Pipe-to-Tube Metric-to-Inch Adapters Plastic Hose-to-Pipe Adapters Plier Adapters Plug Adapters Pneumatic Adapters Power Adapters PS/2 Adapters Pump Adapters Pump-to-Motor Adapters Push-to-Connect Vacuum Tube Adapters PVC Trap Adapters Quick-Change Adapters Quick-Clamp to Hose Adapters Receptacle Adapters Reducing Adapters Regulator Adapters

Welding Regulator Adapters Welding Regulator Tank Adapters

Ridgid 770 Die Head Adapters Ridgid 772 Die Head Adapters Ridgid 774 Square Drive Adapters Ridgid 839 Chuck Adapters RJ-45 Adapters Robot Tool Adapters Robot Vacuum Cup Adapters Robot Wrist Adapters Rod Adapters Rod End Adapters Rod End Step-Down Adapters Router Adapters RV Adapters SA Spool Adapters Sanding Disc Adapters Sanitary Adapters Sanitary Barbed Tube Adapters Sanitary Union Tube Adapters Screw Adapters Screwdriver Bit Adapters Screwdriver Insert Bit Adapters Screwdriver Power Bit Adapters SDS Shank Bit Adapters SDS-Max Shank Rotary Hammer Adapters Serial-to-USB Adapters Shaft Adapters Shank Adapters Sink Drain Compression Tube Adapters Sink Trap Adapters Slide Hammer Adapters Slotted-Drive Thread Adapters Smartphone Power Adapters Socket Adapters

Flex-Joint Adapters Magnetic Socket Wrench Adapters Swivel-Joint Adapters Universal Socket Adapters

Solder-Joint and CPVC Tube Adapters Solder-Joint Socket-Weld Tube Adapters Spigot Adapters Spindle Adapters Spline Adapters Spool Adapters Square Drive Size Adapters Square-Drive Bit Adapters Stainless Steel Barbed Hose-to-Pipe Adapters Stainless Steel Barbed Tube-to-Pipe Adapters Stainless Steel BSPP-to-NPT Pipe Adapters Stainless Steel BSPT-to-NPT Pipe Adapters Stainless Steel Flared Tube-to-Pipe Adapters Stainless Steel Luer Lock Tube-to-Pipe Adapters Stainless Steel Metric-to-Inch Pipe Adapters Stainless Steel Pipe-to-Hose Adapters Stainless Steel Pipe-to-Tube Adapters Stainless Steel Push-On Hose-to-Pipe Adapters Stainless Steel Push-to-Connect Tube-to-Pipe Adapters Stainless Steel Quick-Disconnect Tube-to-Pipe Adapters Stainless Steel Vacuum Tube-to-Pipe Adapters Stainless Steel Weld Tube-to-Pipe Adapters Standoff Thread Adapters Steel BSPP-to-NPT Pipe Adapters Steel Hose-to-Pipe Adapters Steel Metric-to-Inch Adapters Steel Pipe Adapters Steel Single-Sleeve Compression Tube-to-Pipe Adapters Steel Tube-to-Pipe Adapters Steel Yor-Lok Tube-to-Pipe Adapters Steering Wheel Adapters Step-Down Adapters Step-Down Shaft Adapters Step-Up Shaft Adapters Straight-Thread Pipe Adapters Straight-Thread Pipe-to-Pipe Adapters Switching Adapters Swivel Adapters Syringe Adapters Tablet Computer Power Adapters Tank Adapters

Bulkhead Tank Adapters Propane Tank Adapters Welding Regulator Tank Adapters Welding Tank Adapters

Tank Adapters for 78505A Tap Adapters Tee Adapters Telephone Adapters Terminal Adapters

Electrical Cable Terminal Adapters Electrical Wire Terminal Adapters Quick-Disconnect Stud Adapters

Test Lead Adapters Text Telephone Adapters Thermocouple Adapters

Type J Thermocouple Adapters Type K Thermocouple Adapters Type T Thermocouple Adapters

Thread Adapters

BSPT-to-NPT Pipe Fitting Adapters Float Adapters Garden Hose Thread Adapters Pipe Thread Adapters Puller Thread Adapters Valve Adapters

Threaded Rod Adapters

Threaded Rod Turnbuckle Adapters

Threading Die Adapters Through Hole Thread Adapters TIG Torch Power Cable Adapters

45V62 Power Cable Adapters

Torque Adapters

Torque Wrench Adapters

Tote Adapters Trailer Adapters Travel Adapters Tube Adapters

Barbed Tube Adapters Butt-Weld Tube Adapters Compression Tube Adapters Leveling Glide Adapters Leveling Mount Adapters Quick-Disconnect Tube Adapters Sanitary Tube Adapters Socket-Weld Tube Adapters Tube-to-Pipe Adapters Vacuum Tube Adapters Vacuum Tube-to-Pipe Adapters

Tube End Adapters Tube Fitting Swivel Adapters Union Tube Adapters USB Adapters USB Audio Adapters USB Multiport Adapters Vacuum Cup Adapters Vacuum Cup Antislip Adapters Vacuum Lifter Antislip Adapters Vacuum Quick-Disconnect Tube-to-Pipe Adapters Vacuum Quick-Turn Tube-to-Pipe Adapters Vacuum Single-Sleeve Compression Tube Adapters Vacuum Tube-to-Hose Adapters Vacuum Yor-Lok Tube Adapters Vesa Adapters VGA Adapters Vise Adapters Wheel Adapters

Buffing Wheel Adapters Grinding Wheel Adapters Sanding Wheel Adapters Wheel Brush Adapters

Wheel Brush Adapters, Bushings, and Arbors Wrench Adapters

Box-End Wrench Adapters Flex-Joint Adapters Magnetic Socket Wrench Adapters Ratchet Wrench Adapters Socket Wrench Adapters Swivel-Joint Adapters Torque Wrench Adapters Universal Socket Adapters

Clear All

	Type Type


Adapter	Connector

Nut	Reducer

Sleeve

	System of Measurement System of Measurement

	Pipe Size Pipe Size

	Thread Type Thread Type

	Material Material

Stainless
Steel

	Shape Shape


Straight	90° Elbow

Tee	45° Elbow

Cross

	Connection Style Connection Style

Push to Connect

	Gender Gender

	For Use With For Use With

	Connection Type Connection Type


Pipe	Tube

	For Tube OD For Tube OD	Show

	For Tube OD For Tube OD	Hide

	For Tube Material For Tube Material

Stainless
Steel

	Maximum Pressure Maximum Pressure

150 psi @ 72° F

200 psi @ 72° F

300 psi @ 72° F

400 psi @ 72° F

500 psi @ 72° F

530 psi @ 72° F

900 psi @ 72° F

1,000 psi @ 72° F

2,100 psi @ 72° F

2,300 psi @ 72° F

2,400 psi @ 72° F

2,700 psi @ 72° F

2,900 psi @ 72° F

3,600 psi @ 72° F

4,500 psi @ 72° F

5,800 psi @ 72° F

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

100° to 249° F

250° to 499° F

500° to 999° F

1,000° F or greater

	Minimum Temperature Minimum Temperature

	Nut Material Nut Material

Stainless Steel

	Maximum Vacuum Maximum Vacuum

28 in. of Hg @ 72° F

29 in. of Hg @ 72° F

	Sleeve Material Sleeve Material

Stainless Steel

	Length Length

	For Tube Wall Thickness For Tube Wall Thickness

	For Tube Fabrication For Tube Fabrication

	Specifications Met Specifications Met

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260 Products

Tubing and Tube Fittings

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)