ASME Bolts | McMaster-Carr

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Specifications Met

Federal Specification

System of Measurement

Thread Size

Length

Material

Stainless Steel

Threading

Partially Threaded

Fastener Head Type

Finish

Black Zinc Plated

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Head Width

Drive Style

Drilled Spanner

External Square

Tamper-Resistant Hex

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Thread Spacing

Thread Direction

Thread Type

Head Height

Tensile Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 29,999 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Grip Length

Thread Fit

Metric Class 4g6g

Metric Class 5g6g

Metric Class 6g

Metric Class 6h

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Screw Features

Socket Head Profile

Head Diameter

DFARS Specialty Metals

Screw Size

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

How can we improve?

24,920 Products

Fastening and Joining

Hex Head Screws

Hex Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

Socket Head Screws

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish that won't snag on surrounding parts

Carriage Bolts

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

Shoulder Screws

Shoulder Screws

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

Set Screws

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

Tapping Screws

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

Square Head Screws

Square Head Screws

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

Oval Head Screws

Oval Head Screws

The domed top sits slightly above the surface of countersunk holes for a decorative look

Plow Bolts

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

Wood Screws

Fasten material to wood or pieces of wood to each other

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Weld Nuts

Weld to metal surfaces to add permanent threads

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Material Handling

Hoist Rings

Pivot to resist stress that would bend or break an eyebolt when lifting at an angle

Eye Nuts

Pair with bolts or threaded rod to lift and hang components

U-Bolts

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

Containers, Storage, and Furniture

Pallet Rack Locking Pins

Pallet Rack Locking Pins

Prevent forklifts from dislodging pallet rack beams when loading and unloading pallets

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