Specialty Fasteners | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Fastener Head Type

Threading

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Neck Type

Fastener Strength Grade/Class

Head Diameter

Head Height

Thread Type

Thread Spacing

Tensile Strength

60,000 psi to 69,999 psi

70,000 psi to 99,999 psi

100,000 psi to 119,999 psi

120,000 psi or greater

Head Width

Neck Width

Thread Fit

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Thread Length

Specifications Met

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Diameter

Drive Style

1,906 Products

Fastening and Joining

Studs

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

100 products

Elevator Bolts

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

187 products

Carriage Bolts

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

877 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

99 products

12-Point Screws

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

208 products

Pentagon Head Screws

Create a tamper-resistant joint with a head than can only be removed with a 5-point socket

17 products

T-Bolts

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

21 products

Plow Bolts

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

50 products

Square Head Screws

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

145 products

Hold-Down Bolts

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

21 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

180 products

Containers, Storage, and Furniture

Locker Fasteners

Keep lockers aligned and stable by connecting them to each other

1 product