4-40 Knobs | McMaster-Carr

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System of Measurement

Thread Size

Length

Head Diameter

Material

Stainless Steel

Round-Head Thumb Screw Profile

Hole Diameter

Head Height

Mount Type

Unthreaded Hole

Fastener Head Type

Threading

Partially Threaded

Thumb Screw Head Shape

Grip Style

Collar Diameter

Collar Height

Shaft Type

Head Color

Thread Length

Finish

Hole Depth

Drive Style

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

Thread Spacing

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74 Products

Fastening and Joining

Tighten and loosen by hand without the need for tools

Building and Machinery Hardware

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Pull Handles

Use a handle to open and close cabinets, drawers, and doors

Adjustable Handles

Adjustable Handles

Lift and turn to easily position and tighten components; also called clamping handles

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