Specialty Bolts | McMaster-Carr

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4,001 Products

Fastening and Joining

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Elevator Bolts

Create a flush joint to allow movement in tight spaces such as grain elevators and belting systems

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Set Screws

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

Carriage Bolts

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

Square Head Screws

Square Head Screws

Turn the large flat sides with a wrench into square holes that stop further rotation

Hex Head Screws

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

Wood Screws

Fasten material to wood or pieces of wood to each other

12-Point Screws

12-Point Screws

12 contact points handle more torque than a hex head while a flange eliminates the need for a washer

Plow Bolts

The head sits flush with countersunk holes while the bolt stays in place when tightening a nut

Tapping Screws

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

Studs

Press, weld, or screw in place to add a threaded fastening point

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Shoulder Screws

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

Hold-Down Bolts

Hold-Down Bolts

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

T-Bolts

Turn by hand for easy fastening, use as a handle, or attach as a point for straps and clamps

Anchors

Secure structural joints in concrete, brick, and other building materials

Fabricating and Machining

T-Slot Bolts

Secure clamps and workpieces to machine tables with quicker setup than a T-slot nut and stud

T-Slot Cleaners

T-Slot Cleaners

Scrape debris out of machine table T-slots

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