Adjusters | McMaster-Carr

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Cotton/Polyester Fabric

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1C999

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DFARS Specialty Metals

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Light Brown Woodgrain

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Aluminum Oxide Coated

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Shaft Diameter

Rail Height

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Metric Rounded Trapezoidal

34,594 Products

Most Likely Products

Positioning Slides

A lead screw drives the carriage for accurate positioning in laboratory and production equipment

78 products

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

1,467 products

Motor Mounts

Adjust motor positions in belt-driven systems to increase efficiency and reduce wear on components

34 products

Positioning Arms

Mount and position tools and other small equipment

191 products

All Results

Power Transmission

Positioning Slides

A lead screw drives the carriage for accurate positioning in laboratory and production equipment

78 products

Motor Mounts

Adjust motor positions in belt-driven systems to increase efficiency and reduce wear on components

34 products

Garter Springs

Exert radial force from all directions to maintain pressure on shafts or in seals

74 products

Linear Wave Springs

Absorb vibration and fill in gaps along the length of an object

22 products

Compression Springs

When squeezed, springs push back to their original length

2,792 products

Extension Springs

When stretched, springs pull their ends back together

4,726 products

Torsion Springs

Wrap around a shaft or rod to maintain pressure on objects as they rotate

559 products

Die Springs

Support heavy loads with minimal compression in high-impact jobs such as punching and stamping

484 products

Strip Springs

Wrap around a shaft and extend to pull objects in a linear direction

77 products

Made-to-Order Compression Springs

If you can't find the exact size spring you need, we'll get it made for you

80 products

Spring Assortments

Keep extension, compression, and torsion spring types of various sizes on hand

7 products

Disc Springs

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

1,680 products

Rotor Springs

Wind to store power, then release to create rotary motion—similar to winding a wristwatch

10 products

Shock Absorbers

Slow and stop loads to reduce impact that can damage equipment like conveyors, lifters, and presses

76 products

Air Springs

Absorb vibration in moving equipment such as conveyors and transfer stations; lift and level loads

25 products

Gas Springs

Support the weight of doors, hatches, and lids to assist opening and closing

841 products

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

976 products

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

18 products

Electric Slides

Move parts with precision in electronics, robotics, and other automated processes

82 products

Electric Actuators

Push and pull loads with more precise positioning than air and hydraulic cylinders

60 products

Roller Chain Alignment Tools

Align sprockets and roller chain during installation and adjustment

1 product

Chain and Belt Tensioners

Control tension on your roller chain or belt for smooth operation and a long service life

87 products

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

838 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

205 products

Brake Spring Pliers

Stretch brake springs into place and install or remove them from anchor posts

1 product

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

16 products

Lead Screw Collars

Position components and limit travel along a lead screw

55 products

Roller Screws and Nuts

Create more points of contact to handle much higher loads than ball screws and nuts of the same size

8 products

Sleeve Splines and Bearings

Combine sleeve splines and bearings to create linear and rotary motion systems

21 products

Rotary Shafts

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

42 products

Linear Drive Nuts

Create a linear positioning system on a rotary shaft without a lead screw

3 products

Ball Screw/Splines and Bearings

Transmit rotary power, move loads along the shaft, or do both at once

3 products

Building and Machinery Hardware

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

1,467 products

Vibration-Damping Mounts

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

996 products

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

279 products

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

113 products

Vibration-Damping Pads

Place under machinery to reduce vibration and noise, extending service life and protecting floors

149 products

Positioning Arms

Mount and position tools and other small equipment

191 products

Laboratory Jacks

Position small shop and lab equipment on an adjustable-height surface

8 products

Tripod Head Adapters

Mount ball-grip components such as arms and device grips to the top of tripods

1 product

Monitor Mounts

Mount monitors to walls, benches, ceilings, and other surfaces

18 products

Tripods

Stabilize cameras and other equipment

4 products

Tablet, Laptop, and Mobile Device Mounts

Hold and position your electronic devices so they're in sight and within reach

24 products

Positioning Arm Mounts

Add a mounting surface to positioning arms

4 products

Tool Support Arms

Suspend tools to keep them out of the way but still within reach

5 products

Torque-Stabilizing Arms

Reduce hand fatigue in continuous fastening and grinding applications

5 products

Monitor Stands

Support a monitor at viewing height

6 products

Door Closers

Automatically and smoothly pull doors, storm doors, and gates closed

106 products

Door Springs

Extend and snap back to pull storm doors and gates closed

18 products

Window Openers

Operate crank- or push-to-open casement and awning windows

3 products

Window Opener Handles

Replace handles instead of the entire opener to operate crank-to-open windows

2 products

Window Balancers

Suspend, lift, or lower objects that move vertically in a track such as windows, doors, and panels

32 products

Adjustable Handles

Lift and turn to easily position and tighten components; also called clamping handles

759 products

Crank Handles

The offset handle gives extra leverage to maximize turning force

102 products

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

2,277 products

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

1 product

Slip-On Framing and Fittings

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

2 products

Hinge Adjusters

Bend hinges to correct misaligned and sagging doors without removing them

1 product

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

1,785 products

Push-to-Close Latches

Automatically hold doors shut when you push them closed

9 products

Window Latches

Hold windows and screens closed for security or open for ventilation

9 products

Overhead Door Spring Winding Rods

Keep your overhead door balanced on both tracks for smooth, even opening and closing

3 products

Fastening and Joining

Thumb Screws

Tighten and loosen by hand without the need for tools

1,552 products

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

5,322 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

99 products

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

107 products

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

115 products

Pipe/Valve Wheel Wrenches

Grip and turn pipe with one end and loosen valve wheels with the other

1 product

Socket Wrenches

Apply torque to turn nuts, bolts, and other fasteners without rounding the heads

46 products

Fabricating and Machining

Toggle Clamps

Lock workpieces onto worktables or objects

350 products

Bar Clamps

Secure large materials with adjustable arms for even pressure distribution

88 products

Clamping Screws

Apply pressure through a flat-tipped screw to hold material in place

35 products

Spring Clamps

Hold lightweight materials in place, then squeeze to release

41 products

Pipe Welding Clamps

Position and hold pipe joints for welding and assembly

14 products

Magnetic Clamps

Hold magnetic workpieces at common angles such as 90° or 45°

26 products

Clamping Screw Mounting Bases

Thread clamping screw clamps into the holes to hold workpieces

7 products

C-Clamps

Temporarily secure workpieces together or to a work surface

131 products

Band Clamps

Secure round and oddly shaped workpieces

2 products

Corner Clamps

Align and secure materials at a corner joint

4 products

Pliers Clamps

Clamp and lock workpieces with plier-style jaws for secure handling or transport

35 products

Panel Alignment Clamps

Align and hold sheet metal panels for drilling, riveting, and welding

20 products

Swivel Pads

Attach to the ends of screws, threaded studs, or C-clamps to apply even pressure on uneven surfaces

58 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

81 products

Holders for Locking Pliers

Secure to a table or benchtop and slide in locking pliers for a hands-free way to hold your work

1 product

Locking Pliers

Clamp workpieces and lock them in place to keep your hands free

51 products

Springs for Locking Pliers

Change out worn or broken springs in the handle of your locking pliers

6 products

Pliers Sets

A variety of pliers styles and sizes for whatever job comes up

15 products

Screw-Extracting Pliers

Firmly grip stripped, rusty, and tamper-resistant screw heads for removal

3 products

Jaw Covers for Pliers

Cover the jaws of slip-joint pliers to protect the finish of your workpiece

2 products

Slip-Joint Pliers

Adjust the pivot point to switch between two different jaw opening sizes

24 products

Long-Nose Pliers

Grab, bend, and position wire and other small parts

132 products

Parallel-Jaw Pliers

Jaws grip better than standard pliers to keep irregularly shaped objects from slipping

13 products

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

439 products

Milling Tables

Turn the handles to position work on X- and Y-axes

3 products

Angle Plates

Ensure accurate right angles and hold workpieces and fixtures perpendicular to your machine table

64 products

Sine Plates

Use with gauge blocks to measure angles on your workpiece or set up a part for precision grinding

4 products

Rotary Table Chuck Mounting Kits

Everything you need to precisely mount lathe chucks to rotary tables

10 products

Rotary Tables

Rotate your work 360° for easy access to different angles

16 products

Parallels

Raise workpieces above your vise to create clearance for cutting tools

92 products

Support Blocks

Support setup clamps for quick height adjustments

3 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

50 products

Rotary Angle Indexers

Position round workpieces at precise, repeatable angles for machining flats, hexes, and key slots

2 products

Sine Bars

Measure, mark, and inspect exact angles on dies and other precision parts

2 products

Fixture Tables

Add clamps, brackets, and other components to build fixtures for welding and assembly

1 product

Tailstocks

Stabilize long workpieces for precise machining

4 products

Gibs

Guide linear movement in molds and dies

62 products

Alignment Locks

Precisely align your mold halves

25 products

Fabric-Stretching Pliers

Grip and pull thin materials without tearing them

9 products

Gas Fitting Pliers

Perfect for adjusting burners and gas pipe fittings of various sizes

4 products

Material Handling

Lift Tables

Lift material to a comfortable working height and adjust as needed

98 products

Jacks

Lift, hold, push, and position heavy objects

276 products

Scissor Lifts

Take your maintenance and repair tasks to new heights

1 product

Cranes

Raise and move heavy or bulky objects overhead

1 product

Conveyor Belt Take-Up Frames

Adjust the tension on conveyor belts by extending or retracting pulleys

42 products

Conveyor Belt Take-Up Bearings

Use with take-up frames to adjust tension on conveyor belts

14 products

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

219 products

Material Support Stands

Feed material and hold it steady while machining

43 products

Railway Track Aligners

Push or pull rails to correct spacing after a derailment and when installing gauge tie rods

1 product

Railcar Derailers

Protect people, buildings, and other freight cars from uncontrolled railcar movements

1 product

Railcar Rerailers

Guide derailed wheels back onto tracks

2 products

Webbing Buckles

Join together two ends of webbing and adjust the length as needed

43 products

Webbing Slides

Adjust the length of webbing

25 products

Routing Clamps

Secure routed lines of pipe, tubing, and conduit

690 products

Measuring and Inspecting

Micrometer Heads

Mount on jigs, fixtures, and machine tools to position equipment and measure length

36 products

Bore Gauge Calibrators

Set and check the accuracy of two-point bore gauges

1 product

Micrometer Head Mounting Brackets

Mount a micrometer head to your jig or fixture to accurately position workpieces

16 products

Coordinate Measuring Machine Plates and Fixtures

Raise workpieces and position them on a fixture plate

126 products

Gauge Blocks

Confirm dies, fixtures, and other workpieces meet precise tolerances and calibrate measuring tools

738 products

Coordinate Measurement Machine Probes

Take 3D measurements of workpieces on your CMM or CNC machine to inspect for quality

24 products

Height Gauge Calibrators

Ensure height gauges are accurate

11 products

Rivet Hole Locators

Mark even spacing for rivets and other fasteners before you drill

1 product

Shaft Alignment Kits

Confirm that shafts are aligned or measure the degree of their misalignment

9 products

Laser Directing Components

Turn or split dot lasers to point them where needed

12 products

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

21 products

Inspection Parallels

Line up workpieces for precise machining, or support them at a level height for inspecting

8 products

Scales

Bench-top, hanging, floor, and conveyor scales

2 products

Containers, Storage, and Furniture

Workbench Bases

Replace workbench bases or make workbenches with your own top

52 products

Tables

Fixed-height, adjustable-height, and folding tables

89 products

Table Legs

Replace table legs or make tables with your own tabletop

5 products

Hydraulic Lifts

Convert fixed-height workbenches into adjustable-height workbenches

16 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Positioning Arms

Hang your human-machine interface and swivel it around to save floor space and access equipment

12 products

Cord Grip Pliers

Assemble and install cord grips in a range of thread sizes

1 product

Conduit Locknut and Reaming Pliers

Tighten conduit locknuts and ream both the inside and outside of conduit with a single tool

1 product

Electrical Disconnect Pliers

A hook-shaped tip disconnects the locking tab on electrical connectors

1 product

Fiber-Optic Connector Pliers

Safely and securely grip connectors in packed panels without damaging them

1 product

Wire Splice Pliers

A long nose with stepped jaws presses down evenly for parallel crimping

1 product

Spark Plug Pliers

Grip boots firmly and remove them to access or inspect spark plugs

1 product

Relay Pliers

Thin, angled tips pop relays free from sockets in confined areas without damage

1 product

Emergency Stop Switches

Cut power to equipment during emergencies

4 products

Push-Button Switches

Our most common switch type actuates circuits with the push of a button

6 products

Facility and Grounds Maintenance

Pole Handles

Replace handles or extend the reach on tools like brooms, paint rollers, and window washers

41 products

Lubricating

Coolant Nozzle Adjustment Tools

Use as a lever to adjust the angle of coolant streams

1 product

Fluid Handling

Hose and Tube Pliers

Install, remove, or pinch off hose and tube

14 products

Hose Clamp Installation Tools

Tighten hose clamps over hose and fittings to secure them

23 products

Heating, Ventilation, and Air Conditioning

Duct Adjustment Sleeves

Fine-tune the length of your duct without precise measuring and cutting

43 products

Communication

Easels

Hold paper pads and boards up for display

4 products