Stainless Steel Rounds | McMaster-Carr

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System of Measurement

Length

Thread Size

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Screw Size

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Tamper-Resistant Torx

Shaft Diameter

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Rounded Head Style

Threading

Threaded on Both Ends

Unthreaded

DFARS Specialty Metals

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Compliant with Exemptions

Finish

Corrosion-Resistant Coated

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Specifications Met

Federal Specification

OSHA Compliant 29 CFR 1910.184

SAE Standard

Export Control Classification Number (ECCN)

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Performance

Electrically Insulating

Thickness

Hardness

Washer Type

Width

27,936 Products

Raw Materials

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

1,682 products

Fastening and Joining

Lock Washers

Resist vibration to prevent fasteners from loosening

718 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

1,562 products

Sealing Washers

Prevent fluids from leaking around fasteners

149 products

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

96 products

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

62 products

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

1,138 products

Standoffs

Separate, position, or connect components in assemblies

293 products

Standoff Caps

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

43 products

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

208 products

Coupling Nuts

Connect and extend threaded rods

84 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

185 products

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

29 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

119 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

104 products

Weld Nuts

Weld to metal surfaces to add permanent threads

23 products

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

228 products

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

5,885 products

Carriage Bolts

A smooth head provides a finished look while a square neck keeps the bolt in place when using a nut

305 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

1,414 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

7 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

64 products

Wood Screws

Fasten material to wood or pieces of wood to each other

30 products

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

408 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

1,534 products

Cotter Pins

Secure the ends of clevis pins and shafts to keep components in place

4 products

Magnets

Attract or repel metal objects to hang, secure, or position them

17 products

Power Transmission

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion

615 products

Linear Shafts

Pair with linear bearings to reduce friction in manual and automated systems

344 products

Shaft Collars

Hold and position parts on a shaft, or limit shaft movement

1,343 products

Linear Bearings

Minimize friction as parts move along a shaft

380 products

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

48 products

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

922 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

32 products

Ball Bearings

Create less friction than other bearings for use at high speeds

891 products

Roller Bearings

Support higher loads than ball bearings, but run at lower speeds

18 products

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

23 products

Turntable Bearings

Support machinery that slowly turns or oscillates, such as a rotating hoist

10 products

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

64 products

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

26 products

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

291 products

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

271 products

Swivel Joints

Handle shaft misalignment where ball joint rod ends won’t fit; also known as spherical bearings

31 products

Track Rollers

Support and carry objects as they move along conveyor systems

121 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

1,155 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

640 products

Idler Rollers

Guide boxes and parts as they pass through conveyor systems

1 product

Round Belts

Flexible to send rotary power between unparallel shafts

10 products

Round Belt Idler Pulleys

Spin freely on built-in bearings to reduce wear and vibration on round belts

9 products

Timing Belt Drive Pulleys

Pair with a timing belt to transfer motion from a rotating shaft

27 products

Fluid Handling

Sieves

Sift material by shaking and letting it fall through

227 products

Sieve Bottoms

Catch material that passes through a sieve

1 product

Sieve Tops

Keep in the materials you're sifting, and block out contaminants

1 product

Sieve Screens

Use with a sieve shaker to remove large particles from materials such as flour and grain

41 products

Filter Mesh

Strain particles out of various substances

211 products

Sintered Filters

Tiny holes let particles such as air, gas, and vapor pass through while trapping contaminants

8 products

Floats

Replace a float or combine with a rod and valve body to build your own float valve

103 products

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

51 products

Sights

Observe and monitor the contents of pipes, tanks, and other containers

35 products

Manifolds

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

12 products

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

12 products

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

260 products

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

163 products

Hose Washers

Place inside nozzles and spigots to prevent leaks in an attached hose

1 product

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

10 products

Drum Gaskets

Seal lids onto steel and stainless steel drums

6 products

Made-to-Order Gaskets

Send your exact specifications to get gaskets that fit precisely between surfaces

4 products

Manway Gaskets

Create a tight seal between the nozzle and lid of tank car manways

4 products

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

9 products

Spring-Loaded Seals

Seal rods and pistons with a wider range of temperature and chemical resistance than U-cup seals

54 products

Shaft Seals

Prevent leaks in motors, pumps, and gearboxes

212 products

Shaft Repair Sleeves

Cover worn shafts with a smooth and protective sealing surface without machining

21 products

Fabricating and Machining

Parts Baskets

Contain parts for cleaning and moving them in and out of washers

118 products

Wire Brushes

Scrub by hand or connect to power tools to clean, polish, deburr, and remove rust

813 products

Locating and Support Buttons

Secure and position workpieces and fixtures from the bottom or side

24 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

9 products

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

79 products

Spring Stops

Push back against workpieces to hold them in place against stops and rails

4 products

Router Bits

Attach to routers and CNC machines to cut grooves, chamfers, and other detailed shapes

4 products

Rotary Tool Blades

Replace the blade on your Dremel rotary tool

8 products

Clamp Holding Washers

Replace worn washers on open-arm toggle clamps to keep holding screws in place

5 products

Building and Machinery Hardware

Protective Plugs

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

70 products

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

20 products

Knobs

Position, tighten, and secure fixtures and equipment

178 products

Steering Wheel Knobs

Attach to steering wheels for one-hand operation

1 product

Hand Wheels

Rotate to adjust machinery, valves, drill presses, and other equipment

14 products

Ball Knobs

Provide grip on control levers and push-pull rods

18 products

Positioning Arms

Mount and position tools, small electronics, and displays

1 product

Turntables

Rotate to reposition machinery and equipment

4 products

Overhead Door Rollers

Replace the rollers on garage doors and other overhead doors

2 products

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

44 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

84 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

73 products

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

4 products

Material Handling

Conveyor Belt Pulleys

Replace pulleys on conveyor belts or build new conveyor belts

52 products

Conveyor Rollers

Support and move objects along conveyors

203 products

Conveyor Roller Bearings

Replace bearings on conveyor rollers, or press into tubing or pipe to create a roller

17 products

Skate Wheels

Replace wheels on skate wheel conveyors or add wheels for a custom setup

1 product

Ball Transfers

Install in arrays to create platforms for conveying, rotating, and positioning heavy objects

73 products

Wheels

Move objects with ease

8 products

Pulleys

Mount or suspend to guide wire rope for lifting and pulling loads

54 products

Drum Dollies

Instead of tilting heavy loads on drum trucks, roll drums upright to where you need them

5 products

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

293 products

Chain Rings

Join chains and add connectors for binding, towing, and lifting

10 products

Routing Rings

Suspend wire and cable by feeding it through the eyehole

5 products

Facility and Grounds Maintenance

Shower Drain Grates

Keep solids from sliding down your drain

1 product

Floor Drain Grates

Block solids from falling down drains while liquids flow freely

2 products

Floor Drains

Catch liquid from the floor and direct it down a drain pipe

4 products

Measuring and Inspecting

Radius Gauges

Check convex and concave radii of tools, patterns, and dies

7 products

Load Cells

Measure forces and send them to computers to monitor and trigger actions in machinery

16 products

Electrical

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

6 products

Outlet Box Extenders

Add depth to an outlet box when there’s not enough space for components

4 products

Conduit and Conduit Fittings

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

25 products

Fish Tape

Hook to the end of wire and move it through conduit and raceway

1 product

Electrical Enclosures

House and protect power supplies, control panels, and other electrical equipment

4 products

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

16 products

Containers, Storage, and Furniture

Trash Cans

Dispose of household garbage, recyclables, and even flammable waste

4 products

Safety Equipment

Safety Mirrors

See what's happening around corners, at intersections, down aisles, and over counters

16 products

Communication

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

10 products