Socket Head Cap Screws (Allen Head Screws) — Stock & Custom
Also called Allen head screws, socket head cap screws are a type of threaded fastener. They typically have a cylindrical head with an inset hexagon drive that can be used in conjunction with a key for tightening. Socket head cap screws have a number of benefits over other fastener types, including increased tensile and yield strength compared to similar screw types.
MW Components manufactures both stock and custom socket head cap screws in a variety of sizes and diameters. The majority of our socket head cap screws are available in stainless steel, although we also work with specialty alloys upon request. For more information on our in-stock selection of socket head cap screws, view our stock lists below or shop our inventory of closeout parts.
-Aerospace & Military Stock List
-Non-Military Stock List
-Shop Closeout SHCS
Shop Socket Head Cap Screws
Use the filters to narrow by material, finish, length, thread size, and screw options. Browse the results list to find the part that fits your requirements.
Custom Socket Head Cap Screws
Need a non-standard part? In addition to our military and non-military stock selection, MW Components offers product-to-print services for custom socket head cap screws / capscrews. Our team can produce custom parts based on your requirements, including different head and drive types. Specialty lengths, materials, and screw options are also available.
Send us your part requirements and one of our experts will follow up with more information on lead time and pricing.
Applications for Socket Head Cap Screws
Socket head cap screws are a type of machine screw often used in industrial applications and machinery. They’re ideal for tight areas and are commonly selected when increased tensile and yield strength is needed compared to similar screw types.
Typical situations where socket head cap screws are used include:
- Assemblies with limited tool clearance or recessed fastener locations
- Industrial machinery and equipment builds
- Applications where a compact head and internal drive are preferred
Socket head cap screws are a type of machine screw often used in industrial applications and machinery. They’re ideal for tight areas and are commonly selected when increased tensile and yield strength is needed compared to similar screw types.
Socket Head Cap Screw Specifications
Socket head cap screws are also known as Allen head screws, Allen socket bolts, socket cap screws, and socket screws.
Head types – cylindrical with a hexagonal drive hole
Drive types – Torx, 6-spline, hex socket
Other varieties – button head socket screws and flat head socket screws
Socket Head Cap Screw Manufacturing
MW offers three main types of socket head cap screws: socket cap screws, flat socket cap screws, and button socket cap screws in standard diameters ranging from 00-90 through 1/2 (0.500) in a variety of standard and specialty materials.
We can support small runs.
How to Select the Right Socket Head Cap Screws
Start with the basics and match the fastener to your assembly:
Thread size and length based on the design and required engagement
Material based on the environment and performance needs
Finish based on corrosion protection and any program requirements
Screw options if you need features like locking, washer assemblies, O-ring grooves, thread fit, thread style, heat treat, or tolerance controls
If you’re trying to match an existing part, using the filters and product results is often the fastest path. If you need a specific configuration that isn’t listed, request a quote and share your requirements.
FAQs
Socket head cap screws are threaded fasteners with a cylindrical head and an inset drive. They’re often used in industrial applications and machinery, especially in tight areas.
Yes—“Allen head screws” is a common name for socket head cap screws.
They’re commonly used in industrial applications and machinery and are a good fit for tight-clearance assemblies. They’re also often selected for increased tensile and yield strength compared to similar screw types.
Socket head cap screws are tightened using a key or bit that fits the inset drive. Use the correct drive tool for the screw’s drive type and make sure it’s fully seated before tightening.
Yes. You can shop our in-stock selection using the filters and product results list on this page.
Yes. MW Components offers product-to-print services for custom socket head cap screws, including different head and drive types. Specialty lengths, materials, and screw options are also available.
Compression springs can have various end styles to optimize fit and function:
- Open ends – coils end without modification.
- Closed ends – final coil is closed to provide a flat surface.
Closed and ground ends – after closing, ends are ground to make them flat, stable, and more precise in seating.
The end type affects how the spring seats against surfaces, its solid height, load distribution, and stability under compression.
The majority of our socket head cap screws are available in stainless steel, and we also work with specialty alloys upon request.
Available screw options include Compliance – DFARS 225.252-7009 (where applicable). If you need compliance support, include that requirement when requesting a quote.
If you want to go even leaner, we can cut to 6 FAQs by combining the “used for” + “tool” into one and dropping DFARS into the Custom/Quote section instead.
Our Manufacturing Locations
Need a Large Order?
We can design and manufacture a component for your specific application in any quantity. For quantities over 1,000, please request a quote.
