Knurled Head Thumb Bolts | McMaster-Carr

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System of Measurement

Thread Size

Shoulder Diameter

Shoulder Length

Material

Grade 2 Titanium

Stainless Steel

Head Diameter

Length

Thread Length

Fastener Head Type

Head Height

Drive Style

Socket Head Profile

Thumb Screw Head Profile

Threading

Partially Threaded

Finish

Thread Direction

Thread Type

Thread Spacing

Thread Pitch

Tensile Strength

Less than 20,000 psi

20,000 psi to 59,999 psi

60,000 psi to 79,999 psi

80,000 psi to 99,999 psi

100,000 psi or greater

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Export Control Classification Number (ECCN)

Drive Size

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

How can we improve?

6,685 Products

Fastening and Joining

Tighten and loosen by hand without the need for tools

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

Easy to tighten and loosen by hand for making frequent adjustments

Push-Button Nuts

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

Building and Machinery Hardware

Knobs

Position, tighten, and secure fixtures and equipment

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

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