ASTM Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Threading

Partially Threaded

Fastener Head Type

Material

Grade 2 Titanium

Stainless Steel

Drive Style

External 12-Point

External Square

Tamper-Resistant Hex

Tamper-Resistant Torx

Fastener Strength Grade/Class

ASTM Grade B8SH

ASTM Grade B8MSH

ASTM Grade A325

ASTM Grade A490

Socket Head Profile

Head Diameter

Tensile Strength

10,000 psi to 19,999 psi

30,000 psi to 99,999 psi

100,000 psi or greater

Thread Type

Metric Trapezoidal

Thread Direction

Head Height

Thread Spacing

Drive Size

Grip Length

Thread Fit

Metric Class 4g6g

Metric Class 5g6g

Metric Class 6g

Metric Class 6h

Metric Class 6H

Metric Trapezoidal Class 7e

Unified Standard Class 1A

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

DFARS Specialty Metals

RoHS

Compliant with Exemptions

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

REACH

Export Control Classification Number (ECCN)

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14,898 Products

Fastening and Joining

Socket Head Screws

Socket Head Screws

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

Hex Head Screws

Hex Head Screws

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

Flat Head Screws

Flat Head Screws

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

Rounded Head Screws

Rounded Head Screws

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

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

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

Wood Screws

Fasten material to wood or pieces of wood to each other

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Standoffs

Separate, position, or connect components in assemblies

Anchors

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

Screwdrivers

Tighten and loosen screws

Nutdrivers

Tighten and loosen nuts and bolts

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

L-Keys

Turn fasteners from either end and reach into tight spots

Sockets

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

Power Transmission

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

Lead Screws and Nuts

Lead Screws and Nuts

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

Material Handling

Eyebolts

Route rope through the loop or attach hooks and shackles for lifting

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