The Evolution Of Headless Bolts And Screws

A bolt without a head is called a stud bolt. It is a bolt with threads on both ends, designed to be screwed into a fixed part at one end and receive a nut on the other. Stud bolts are commonly used in high-pressure piping systems, wheel hub assemblies, and pipeline flange connections. They are available in a variety of materials, including stainless steel, zinc-plated steel, galvanized steel, and brass.

Socket set screws with a cup point, full thread, and Allen socket drive

Socket set screws, also referred to as grub screws, are used to secure an object within or against another object. The screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object. It exerts compressional or clamping force through the bottom tip that projects through the hole.

The Cup Point has a special cup section supplied on the end of the threaded member, with a depression in the end to reduce the area in contact with the surface. This increases its holding and locking power under pressure.

The 2-56 x 1/16" Socket Set Screws, 3/8-16 x 3/8" Socket Set Screws, and 4-40 x 1/4" Socket Set Screws, all manufactured by Fastenere Inc., are examples of socket set screws with a cup point, full thread, and Allen socket drive. These screws are made of 18-8 Stainless Steel, which provides strength and good corrosion resistance in many environments. The thread diameter and Allen Hex Drive Size vary between the three screw types.

Fastenere Inc. specializes in providing rare parts that are often challenging to source, supplying unique components in the quantities required for specific projects.

Metric socket head set screws

Socket head cap screws, also referred to as set screws or grub screws, are threaded fasteners with a recessed drive, often called a hex socket or hexagon socket. They are installed using a hexagon-shaped key and can be tightened to higher torque specifications than a crossed recessed or slotted drive fastener.

Socket head cap screws are available in a variety of materials, including:

• A2 and A4 stainless steel
• Hardened steel
• Plain steel
• Alloy steel
• Black oxide finish
• 304 stainless steel

They also come in different sizes, with Amazon offering a 1080-piece kit as part of its range.

• M8-1.25 x 25mm Flat Head Socket Cap Screws, made from stainless steel
• M3 x 4/5/6/8/10/12/14/16/18/20/25mm Socket Cap Screws, available in a 610-piece kit from VIGRUE
• M8-1.25 x 16mm Socket Head Cap Screws, available in packs of 10
• M4 x 8mm Thread Socket Head Cap Screw, made from 304 stainless steel
• M6-1.0 x 30mm Alloy Socket Cap Screw, available in packs of 2 from Everbilt

Socket set screws with a dog point, internal hex drive, and coarse thread

The internal hex drive, also known as an Allen wrench or Allen key, is designed to be used with a hex socket. The recommended hex socket size for these screws varies depending on the specific product, so it's important to refer to the manufacturer's recommendations. For example, the Newport Fasteners brand of these screws with a thread diameter-pitch of 8-32 and a length of 3/8 inch, recommends using a 5/64 inch hex socket Allen wrench.

When purchasing socket set screws with a dog point and internal hex drive, it's important to consider the environment in which they will be used. While black oxide provides a sleek finish, it is not a protective coating and will rust if exposed to moisture. For environments with moisture, it is recommended to use stainless steel screws instead.

These screws are available in various quantities, such as packs of 100, and can be purchased from online retailers like Amazon. When buying, it's important to consider the specific thread diameter-pitch and length that you require for your project.

Socket set screws with a cup point, Allen socket drive, and black oxide finish

The cup point design provides excellent holding power with minimal surface damage, making it perfect for permanent or semi-permanent installations. The hex socket drive ensures easy installation and removal, even in tight spaces and high-stress environments.

These screws are typically made from high-strength alloy steel and treated with a thermal black oxide finish. This finish provides mild corrosion resistance and a sleek black finish, making it suitable for indoor use or light outdoor exposure.

The Allen socket drive, also known as a hex socket drive, is a six-sided recess that requires an Allen wrench (hex key) for installation and removal. The drive system is designed as a hexagon-shaped hole, compatible with a 1/8" hex key for quick and secure fastening.

These screws are commonly used in high-torque and high-stress applications and are known for their strong holding power. They are available in various lengths and thread sizes to meet specific project requirements.

Socket set screws with a cup point, full thread, and Allen socket drive, in stainless steel

Socket set screws with a cup point, full thread, and Allen socket drive are available in stainless steel from brands such as Fastenere and Yoliko. These screws are typically used to secure an object within or against another object. They are tightened against the inner object to prevent it from moving relative to the outer object, with the bottom tip exerting compressional or clamping force.

The Cup Point design features a depression at the end, reducing the surface area in contact with the surface and increasing its holding and locking power under pressure. This design also offers superior resistance to wear while maintaining a strong grip. The stainless steel material provides strength and good corrosion resistance in many environments.

These screws are available in various sizes and quantities, including 2-56 x 1/16", 1/4-20 x 3/16", and M2.5-0.45 x 3MM. They are well-regarded by customers, with ratings of 4.7 out of 5 stars and above.

In addition to the screws, some packages include Vifmy locknut assortments, flat washers, and other hardware.

Frequently asked questions