Screw-Down Clamps | McMaster-Carr

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System of Measurement

Thread Size

Material

Aluminum Bronze

Stainless Steel

Mount Type

Threaded Through Hole

Unthreaded Hole

Unthreaded Plug

Unthreaded Through Hole

Length

Head Diameter

Grip Style

Clamp Type

Stud Length

Handle Style

Sliding T-Handle

Color

Clamp ID

15/64" to 45/64"

15/64" to 1 1/32"

9/32" to 21/64"

19/64" to 21/64"

5/16" to 2 5/16"

5/16" to 3 15/16"

23/64" to 13/32"

13/32" to 15/32"

13/32" to 31/64"

Thumb Screw Head Shape

ID

0.768" to 0.945"

0.925" to 1.142"

Finish

Manganese Phosphate Coated

Nickel Chrome Plated

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

Thread Length

Fastener Head Type

Head Height

Stud Material

Stainless Steel

Pipe Size

Round-Head Thumb Screw Profile

Threading

Partially Threaded

How can we improve?

7,895 Products

Fabricating and Machining

Clamps

Hold workpieces securely in place

Swivel Pads

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

Fixture Clamps

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

Support Blocks

Support setup clamps for quick height adjustments

Fixture Kits

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

Alignment Locks

Alignment Locks

Precisely align your mold halves

Electrical

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Cable and Hose Carrier Accessories

Cable and Hose Carrier Accessories

Move cable and hose carriers alongside robot arms without obstructing movement

Building and Machinery Hardware

Cam Handles

For fast clamping, push down on the handle to draw two parts together

Adjustable Handles

Adjustable Handles

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

Pull Handles and Knobs

Pull Handles and Knobs

Open and close cabinets, drawers, and doors on machines and equipment

Knobs

Position, tighten, and secure fixtures and equipment

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Ball Knobs

Provide grip on control levers and push-pull rods

Fluid Handling

Hose Clamps

Connect hose to barbed hose fittings

Hose Clamp Guards

Hose Clamp Guards

Cover the ends of hose and tube clamps to prevent them from cutting people and objects

Fastening and Joining

Tighten and loosen by hand without the need for tools

Hold-Down Bolts

Hold-Down Bolts

Hold material under the bent head while the other end is tightened down with a nut

Material Handling

U-Bolts

Anchor heavy pipe, tube, and conduit; stronger than routing clamps and hangers

Steps

Mount where you need them instead of dragging over a step stool every time

Hitch Clamps

Strengthen the joint between your hitch insert and receiver to prevent rattling and swaying

Forklift Tie-Down Clamps

Forklift Tie-Down Clamps

Create anchor points on forklift forks to secure loads for transport

Measuring and Inspecting

Test Lead Clips

Test Lead Clips

For hands-free testing, create a temporary yet secure electrical connection

Coordinate Measuring Machine Fixture Clamps

Coordinate Measuring Machine Fixture Clamps

Keep workpieces in place for hands-free measuring and inspecting

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