Knob Screws | McMaster-Carr

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Indicating Knobs

Pull Handles and Knobs

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Stainless Steel

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Thumb Screw Head Profile

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Partially Threaded

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3,007 Products

Thumb Screws

Six-Arm Plastic-Head Thumb Screws

Six-Arm Plastic-Head Thumb Screws

Wrap your entire hand around the large head and lobes for a tight grasp

Stainless Steel Raised-Profile Knurled-Head Thumb Screws

Corrosion-resistant, with a raised head you can grasp with oily fingers

Plastic-Knurled-Head Thumb Screws

Plastic-Knurled-Head Thumb Screws

The strength of stainless steel with a lightweight head that won't rust

Steel Four-Arm Extended-Tip Thumb Screws

Steel Four-Arm Extended-Tip Thumb Screws

Four arms and an extended tip to guide into holes with greater control

Stainless Steel Flared-Collar Knurled-Head Thumb Screws

Stainless Steel Flared-Collar Knurled-Head Thumb Screws

The decorative collar leaves extra room to grip in wet and corrosive environments

Steel Raised-Profile Knurled-Head Thumb Screws

Grasp tightly even with oily fingers

Stainless Steel Knurled-Head Thumb Screws

Stainless Steel Knurled-Head Thumb Screws

Fasten panels and covers in wet and corrosive environments

Stainless Steel Extended-Tip Thumb Screws

Stainless Steel Extended-Tip Thumb Screws

The dowel-like tip guides the corrosion-resistant screw into holes with greater control

Steel Knurled-Head Thumb Screws

Steel Knurled-Head Thumb Screws

Fasten panels and covers by hand

Stainless Steel Wing Thumb Screws

Stainless Steel Wing Thumb Screws

Corrosion resistant with a grip-friendly design

Stainless Steel High-Profile Knurled-Head Thumb Screws

Twice as tall as low-profile thumb screws for added leverage in wet areas

Hex-Drive Plastic-Head Thumb Screws

Hex-Drive Plastic-Head Thumb Screws

Twist with a hex key when you need more torque than fingers can provide

Two-Arm Plastic-Head Thumb Screws

Two-Arm Plastic-Head Thumb Screws

Flat, evenly spaced arms give your fingers extra leverage to twist

Steel and Iron Wing Thumb Screws

Steel and Iron Wing Thumb Screws

A wing shape for more leverage than spade head thumb screws

Aluminum Flared-Collar Knurled-Head Thumb Screws

Aluminum Flared-Collar Knurled-Head Thumb Screws

Our most lightweight flared-collar thumb screws, these are one-third the weight of steel

Self-Aligning Four-Arm Swivel-Tip Thumb Screws

Self-Aligning Four-Arm Swivel-Tip Thumb Screws

The large tip pivots to sit flat against surfaces on angled or uneven surfaces

Steel Extended-Tip Thumb Screws

Steel Extended-Tip Thumb Screws

The dowel-like tip guides the screw into holes with greater control

Brass Raised-Profile Knurled-Head Thumb Screws

Grasp this shiny screw tightly even if you have oily fingers

Stainless Steel Narrow-Profile Knurled-Head Thumb Screws

The slim head won't snag plugs and cords in electrical panels

Brass Flared-Collar Knurled-Head Thumb Screws

Brass Flared-Collar Knurled-Head Thumb Screws

Shiny and rust-resistant, with a decorative collar for added space to grasp

Plastic Raised-Profile Knurled-Head Thumb Screws

A lightweight, economical alternative to metal raised-profile thumb screws

Brass Knurled-Head Thumb Screws

Brass Knurled-Head Thumb Screws

Conductive, shiny, and corrosion resistant in humid environments

Steel High-Profile Knurled-Head Thumb Screws

Twice as tall as regular thumb screws for added leverage

Slotted Plastic High-Profile Knurled-Head Thumb Screws

Nonconductive, rust-resistant, lightweight, and can twist by driver and by hand

Plastic Thumb Screws

Plastic Thumb Screws

A lightweight, economical alternative to metal thumb screws

Slotted Stainless Steel Knurled-Head Thumb Screws

Slotted Stainless Steel Knurled-Head Thumb Screws

Fasten these corrosion-resistant thumb screws by driver and by hand

Self-Aligning Swivel-Tip Thumb Screws

Self-Aligning Swivel-Tip Thumb Screws

The narrow tip fits through threaded holes and pivots to secure angled or uneven surfaces

Precision-Adjust Ball-Tip Thumb Screws

Precision-Adjust Ball-Tip Thumb Screws

Make the finest adjustments of any thumb screws we sell

Steel and Iron Spade-Head Thumb Screws

Steel and Iron Spade-Head Thumb Screws

Our most popular spade-head thumb screws, with a flat head for extra twisting leverage

Brass Spade-Head Thumb Screws

Brass Spade-Head Thumb Screws

Conductive, nonmagnetic, and shiny, with a flat head for extra leverage

Stainless Steel Spade-Head Thumb Screws

Stainless Steel Spade-Head Thumb Screws

Fasten in wet environments, with a coin-like head for extra leverage

Slotted Stainless Steel Narrow-Profile Knurled-Head Thumb Screws

Fasten by driver and by hand in wet areas where you need to avoid snagging cords

Quarter-Turn Thumb Screws

Quarter-Turn Thumb Screws

Twist the head to connect or disconnect jigs, lids, and plates without removing the screw

Sanitary Thumb Screws

Sanitary Thumb Screws

Withstand corrosion in sanitary environments that experience frequent washdowns

Steel Flanged Spade-Head Thumb Screws

Steel Flanged Spade-Head Thumb Screws

Distribute pressure evenly when twisting into thin and soft materials

Steel Spade-Head Soft-Tip Thumb Screws

Steel Spade-Head Soft-Tip Thumb Screws

The soft tip won't mar or deform components such as clamps and adapters

Stainless Steel Flanged Spade-Head Thumb Screws

Stainless Steel Flanged Spade-Head Thumb Screws

Distribute pressure evenly in thin and soft materials without the risk of corrosion

Stainless Steel Hex-Head Thumb Screws

Stainless Steel Hex-Head Thumb Screws

The thick, hex-shaped head transmits extra torque for a tight hold in wet areas

Steel Hex-Head Thumb Screws

Steel Hex-Head Thumb Screws

The thick, hex-shaped head transmits extra torque for a tighter hold than other head shapes

Other Products

Knobs

Position, tighten, and secure fixtures and equipment

Shoulder Screws

Shoulder Screws

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

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Pull Knobs

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

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