HHCS | McMaster-Carr

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System of Measurement

Thread Size

Length

Material

Threading

Fastener Head Type

Fastener Strength Grade/Class

Finish

Corrosion-Resistant Coated

Dyed

Galvanic Barrier Coated

Hot-Dipped Galvanized

Titanium Carbon Nitride (TiCN) Coated

Zinc Flake Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Head Width

Thread Spacing

Drive Style

Hex with Pilot Recess

Head Height

Thread Direction

Thread Type

Specifications Met

Federal Specification

Thread Pitch

Screw Features

Thread Fit

Unified Standard Class 2A

Unified Standard Class 2B

Unified Standard Class 3A

Not Rated

Tensile Strength

Less than 100,000 psi

100,000 psi to 109,999 psi

110,000 psi to 119,999 psi

120,000 psi to 129,999 psi

130,000 psi or greater

Socket Head Profile

DFARS Specialty Metals

Grip Length

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

33,465 Products

Fastening and Joining

Hex Head Screws

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

11,773 products

Socket Head Screws

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

7,915 products

Rounded Head Screws

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

2,742 products

Flat Head Screws

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

2,576 products

Tapping Screws

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

1,123 products

Wood Screws

Fasten material to wood or pieces of wood to each other

452 products

Shoulder Screws

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

6,534 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

4 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

129 products

Concrete Screws

Anchor parts to concrete, block, and brick without tapping the hole first

84 products

Power Transmission

Lead Screws

Pair with lead screw nuts to move components in a straight line

27 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

1 product