Allen Cap Screws | McMaster-Carr

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Drive Style

Hex with Pilot Recess

Tamper-Resistant Hex

System of Measurement

Thread Size

Length

Fastener Head Type

Material

Aluminum Oxide Ceramic

Stainless Steel

Threading

Partially Threaded

Finish

Corrosion-Resistant Coated

Hot-Dipped Galvanized

Phosphate Coated

Zinc Flake Coated

Zinc Yellow-Chromate Plated

Socket Head Profile

Head Height

Head Diameter

Fastener Strength Grade/Class

ASTM Grade A325

ASTM Grade A490

Thread Direction

Thread Pitch

Thread Type

Thread Spacing

Specifications Met

Federal Specification

Drive Size

Tensile Strength

Less than 20,000 psi

20,000 psi to 39,999 psi

40,000 psi to 59,999 psi

60,000 psi to 99,999 psi

100,000 psi or greater

Head Width

Rounded Head Style

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

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

How can we improve?

22,203 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

Rounded Head Screws

Rounded Head Screws

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

Flat Head Screws

Flat Head Screws

Fit in countersunk holes for a flush finish

Fastener Assortments

Fastener Assortments

Stay prepared by keeping fasteners in common sizes and materials on hand

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Building and Machinery Hardware

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

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