Key Screws | McMaster-Carr

Filter by

System of Measurement

Thread Size

Length

Material

Fastener Head Type

Drive Style

Hex with Pilot Recess

Tamper-Resistant Torx

Tamper-Resistant Torx Plus

Finish

Titanium Carbon Nitride (TiCN) Coated

Zinc Flake Coated

Zinc Plated

Zinc Yellow-Chromate Plated

Shoulder Diameter

Socket Head Profile

Shoulder Length

Threading

Head Diameter

Tip Type

Head Height

Drive Size

Thread Pitch

Thread Type

Thread Spacing

Thread Direction

Thread Length

Specifications Met

Federal Specification

ISO Standard

SAE Standard

DFARS Specialty Metals

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

25,632 Products

Fastening and Joining

Set Screws

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

4,776 products

Socket Head Screws

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

7,992 products

Plow Bolts

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

50 products

Rounded Head Screws

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

3,202 products

Fastener Assortments

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

3 products

Flat Head Screws

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

2,868 products

Pentagon Head Screws

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

17 products

Thumb Screws

Tighten and loosen by hand without the need for tools

56 products

Tapping Screws

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

220 products

Shoulder Screws

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

6,448 products

Binding Barrel Posts and Screws

Thread together for a low-profile fastener

39 products

Building and Machinery Hardware

Clamp-On Framing Fasteners

Tighten to hold clamp-on framing in place

1 product

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

2 products

Electrical Power, Networking, and Controlling

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

2 products