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Socket Head Cap Screws

Available7,453 products
Socket head cap screws feature a hexagonal recess for tightening and loosening using an Allen wrench or hex key. This design eliminates the need for side clearance and allows screws to be placed close to other screws and assembly components. They come in a variety of head configurations that can fit into tight spaces, reduce the chance of snagging, or provide a flush fit with the fastening surface.

Inch System Standard Socket Head Cap Screws

Inch System Standard Socket Head Cap Screws

Inch standard socket head cap screws are measured and manufactured in imperial or inch units. They have cylindrical heads that are approximately the same height as the screw shank diameter.

Plain Steel

#2-56 Thread Size

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#4-40 Thread Size

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#6-32 Thread Size

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#8-32 Thread Size

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#10-32 Thread Size

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1/4"-20 Thread Size

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5/16"-18 Thread Size

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3/8"-16 Thread Size

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1/2"-13 Thread Size

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5/8"-11 Thread Size

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Black Oxide Steel

#0-80 Thread Size

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#1-64 Thread Size

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#1-72 Thread Size

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#2-56 Thread Size

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#2-64 Thread Size

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#3-48 Thread Size

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#3-56 Thread Size

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#4-40 Thread Size

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#4-48 Thread Size

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#5-40 Thread Size

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#5-44 Thread Size

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#6-32 Thread Size

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#6-40 Thread Size

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#8-32 Thread Size

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#8-36 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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#12-24 Thread Size

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1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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5/16"-24 Thread Size

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3/8"-16 Thread Size

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3/8"-24 Thread Size

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7/16"-14 Thread Size

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7/16"-20 Thread Size

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1/2"-13 Thread Size

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1/2"-20 Thread Size

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9/16"-12 Thread Size

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9/16"-18 Thread Size

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5/8"-11 Thread Size

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5/8"-18 Thread Size

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3/4"-10 Thread Size

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3/4"-16 Thread Size

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7/8"-9 Thread Size

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7/8"-14 Thread Size

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1"-14 Thread Size

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1"-8 Thread Size

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1-1/8"-7 Thread Size

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1-1/8"-12 Thread Size

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1-1/4"-7 Thread Size

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1-1/4"-12 Thread Size

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1-3/8"-6 Thread Size

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1-3/8"-12 Thread Size

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1-1/2"-6 Thread Size

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1-1/2"-12 Thread Size

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1-3/4"-5 Thread Size

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2"-4-1/2 Thread Size

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Zinc Plated Steel

#2-56 Thread Size

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#3-48 Thread Size

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#4-40 Thread Size

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#5-40 Thread Size

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#6-32 Thread Size

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#8-32 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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5/16"-24 Thread Size

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3/8"-16 Thread Size

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3/8"-24 Thread Size

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1/2"-13 Thread Size

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1/2"-20 Thread Size

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5/8"-11 Thread Size

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5/8"-18 Thread Size

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3/4"-10 Thread Size

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3/4"-16 Thread Size

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Chrome Plated Steel

1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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5/16"-24 Thread Size

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3/8"-16 Thread Size

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3/8"-24 Thread Size

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Advanced Corrosion Resistance Steel

#6-32 Thread Size

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#8-32 Thread Size

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#10-24 Thread Size

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1/4"-20 Thread Size

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5/16"-18 Thread Size

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3/8"-16 Thread Size

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7/16"-14 Thread Size

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1/2"-13 Thread Size

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Plain 18-8 Stainless Steel

#0-80 Thread Size

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#1-64 Thread Size

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#1-72 Thread Size

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#2-56 Thread Size

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#2-64 Thread Size

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#3-48 Thread Size

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#3-56 Thread Size

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#4-40 Thread Size

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#4-48 Thread Size

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#5-40 Thread Size

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#5-44 Thread Size

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#6-32 Thread Size

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#6-40 Thread Size

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#8-32 Thread Size

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#8-36 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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#12-24 Thread Size

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1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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5/16"-24 Thread Size

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3/8"-16 Thread Size

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3/8"-24 Thread Size

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7/16"-14 Thread Size

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7/16"-20 Thread Size

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1/2"-13 Thread Size

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1/2"-20 Thread Size

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9/16"-12 Thread Size

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5/8"-11 Thread Size

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5/8"-18 Thread Size

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3/4"-10 Thread Size

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7/8"-9 Thread Size

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1"-8 Thread Size

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Advanced Corrosion Resistance 18-8 Stainless Steel

#6-32 Thread Size

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#8-32 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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1/4"-20 Thread Size

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5/16"-18 Thread Size

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3/8"-16 Thread Size

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1/2"-13 Thread Size

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Plain 316 Stainless Steel

#2-56 Thread Size

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#3-48 Thread Size

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#4-40 Thread Size

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#5-40 Thread Size

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#6-32 Thread Size

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#8-32 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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5/16"-24 Thread Size

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3/8"-16 Thread Size

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3/8"-24 Thread Size

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7/16"-14 Thread Size

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1/2"-13 Thread Size

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5/8"-11 Thread Size

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3/4"-10 Thread Size

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Advanced Corrosion Resistance 316 Stainless Steel

#10-32 Thread Size

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1/4"-20 Thread Size

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Plain Plastic

#4-40 Thread Size

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#6-32 Thread Size

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#8-32 Thread Size

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#10-24 Thread Size

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#10-32 Thread Size

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1/4"-20 Thread Size

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1/4"-28 Thread Size

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5/16"-18 Thread Size

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3/8"-16 Thread Size

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1/2"-13 Thread Size

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5/8"-11 Thread Size

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Metric System Standard Socket Head Cap Screws

Metric System Standard Socket Head Cap Screws

Metric standard socket head cap screws are measured and manufactured in metric units. They have cylindrical heads that are approximately the same height as the screw shank diameter.

Low-Profile Standard Socket Head Cap Screws

Low-Profile Standard Socket Head Cap Screws

Low-profile standard socket screws feature heads that are approximately half as tall as standard socket head screws. This design allows for the use of fasteners where vertical space above the fastening surface is limited.

Flanged Standard Socket Head Cap Screws

Flanged Standard Socket Head Cap Screws

Flanged standard socket screws combine the strength of a standard socket head screw with the increased fastening area of a flanged screw. This design allows for high tensile strength while reducing the chance of damage or marring to the mounting surface.

Flat Head Socket Cap Screws

Flat Head Socket Cap Screws

Flathead socket screws feature tapered heads with flat tops, similar to a wood or drywall screw. This design allows them to be fastened into a countersunk recess to sit flush with the fastening surface.

Button Head Socket Cap Screws

Button Head Socket Cap Screws

Button head socket screws feature a domed head rather than a flat top head like standard socket head cap screws. This design provides a smooth, low profile that reduces the risk of snags. They are commonly used as part of a visual design choice or for lighter-load applications.

Flanged Button Head Socket Cap Screws

Flanged Button Head Socket Cap Screws

Flanged button head socket screws have dome-shaped heads with integrated flanges that spread the fastening forces over a large area. This design helps reduce damage to thin fastening surfaces and provides a clean, finished look.

Vented Socket Head Cap Screws

Vented Socket Head Cap Screws

Vented standard socket head cap screws feature a hole that runs from their heads down to the tip of their shank. This allows for air and fluid to pass through and prevents pressure imbalances.

Locking Socket Head Cap Screws

Locking Socket Head Cap Screws

Locking socket head cap screws are the same general size and shape as standard socket head screws. They resist the effects of vibrations with the help of a thread-locking compound that is pre-applied to the threads of the screw. This compound engages with the threads on the mounting component and helps to prevent unwanted rotation and loosening of the screw.

Socket Head Cap Screw Assortments

Socket Head Cap Screw Assortments
Socket head cap screw assortments feature a variety of cap screw sizes and styles in both metric and imperial units. They are commonly used in repair shops or manufacturing assemblies where the same set of fasteners is used repeatedly.
Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.