Stainless Steel Straight-Thread Pipe Fittings | McMaster-Carr

Filter by

Material

Thread Type

System of Measurement

Pipe Size

Shape

Fitting Type

Pipe Material

Fitting Connection

Pipe Schedule

Gender

Flange Material

For Use With

Pressure Class

Length

Threading

Connects To

Maximum Pressure @ Temperature

Fitting Material

Tube OD

Body Shape

Thread Size

For Flange Class

OD

How can we improve?

16,597 Products

Fluid Handling

Pipe and Pipe Fittings

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Tube Fitting Clamps

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Tube End Plugs

Insert into the ends of tube to keep out dirt and debris

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose Fitting Nuts

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

Pipe Repair Clamps

Pipe Repair Clamps

Fix small holes and cracks in pipe without taking your system apart

Junction Blocks

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

Tube Repair Clamps

Tube Repair Clamps

Mend small holes, cracks, and full-circle breaks in tubing without dismantling your system

Pipeline Fluid Blockers

Pipeline Fluid Blockers

Temporarily block the flow between pipe flanges as you work downstream; also known as paddle blinds

Tube Sampling Ports

Tube Sampling Ports

Take samples from sanitary tubing without pausing or contaminating your line

Flowmeters

Measure the flow rate of a liquid or gas

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

Quick-Release Pin Retaining Caps

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Retaining Rings

Retaining Rings

Hold components on a shaft

Lubricating

Grease Fitting Adapters

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

Grease Fittings

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

Grease Fitting Cleaning Tools

Grease Fitting Cleaning Tools

Flush out old grease, dirt, and debris from clogged fittings

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Building and Machinery Hardware

Slip-On Framing and Fittings

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

Protective Caps

Protective Caps

Cover holes at the end of pipe, conduit, and fittings to keep out debris

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Electrical

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Cover unused holes in enclosures to keep out dust, dirt, and moisture

Measuring and Inspecting

Pipe Size Measuring Kits

Pipe Size Measuring Kits

Connect to pipe and fittings to determine their size without additional measuring tools

Material Handling

Vacuum Fittings

Vacuum Fittings

Connect to vacuum cups and compressed air to create suction; also known as venturi devices

Facility and Grounds Maintenance

Toilet Mounts

Secure toilet components with flanges and hardware kits

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