Allen Bolts | McMaster-Carr

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System of Measurement

Thread Size

Length

Fastener Head Type

Material

Stainless Steel

Threading

Partially Threaded

Drive Style

Hex with Pilot Recess

Tamper-Resistant Hex

Socket Head Profile

Finish

Titanium Carbon Nitride (TiCN) Coated

Zinc Flake Coated

Head Diameter

Thread Pitch

Head Height

Thread Type

Drive Size

Thread Direction

Thread Spacing

Shoulder Length

Shoulder Diameter

Specifications Met

Federal Specification

Fastener Strength Grade/Class

Tensile Strength

Less than 20,000 psi

20,000 psi to 49,999 psi

50,000 psi to 79,999 psi

80,000 psi to 99,999 psi

100,000 psi or greater

Tip Type

DFARS Specialty Metals

RoHS

Compliant with Exemptions

REACH

Export Control Classification Number (ECCN)

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24,383 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

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

Set Screws

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

Shoulder Screws

Shoulder Screws

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

Captive Panel Screws

Captive Panel Screws

Secure panels and enclosures while still having access to them

Tighten and loosen by hand without the need for tools

Communication

Reference Charts

Reference Charts

Check decimal equivalents, drill sizes, or specifications for socket screws

Building and Machinery Hardware

Protective Caps

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

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