Button & Socket Screws
Fastco, Inc. is a Tacoma-based industrial fastener distributor offering an extensive inventory of standard and hard-to-find screws, bolts, and other products. We are committed to providing high-quality products and have helpful, knowledgeable staff available to answer your fastener questions.
Button and Socket Head Screw Advantages & Applications
Socket screws are ideal fasteners for applications where bolts and nuts cannot be utilized. Because of the hex socket, socket screws can achieve higher levels of torque when compared to other screws of similar size. This high amount of torque provides increased efficiency in many applications, allowing fewer total fasteners to be used to achieve a high level of holding strength.
Types of Screw Fasteners at FastcoAt Fastco, we carry an extensive inventory of industrial sockets in diameters from #3 to 2” and lengths from 3/16” to 12”. We stock several head styles, including socket head cap screws, flat head socket cap screws, low head socket cap screws, and socket set screws.
As their name indicates, flat head socket screws are characterized by their flat heads and internal hex drive. Flat head socket screws have a shoulder that slopes and are designed to sit flush with a surface. Flat head socket screws are versatile and are often utilized in automotive applications.
Flat Head Sockets & Screws
Low head socket screws are similar to standard socket cap screws, but feature a smaller screw head height. While the smaller head reduces the overall strength of the fastener, low head sockets are ideal for low-strength applications that require a clean appearance, including home furniture assembly.
Low Head Socket Cap Screws
Shoulder socket screws are characterized by a partially unthreaded, smooth shaft on the head-side of the screw. The smooth portion of the shaft allows for rotation and movement around the screw, allowing use with a mounting pin, joint, or dowel. Shoulder socket screw applications include use with bearings, bushings, engines, pulleys, and more.
Shoulder Socket Screws
Cup point screws are extremely low-profile set screws. These unique, fully threaded fasteners feature a headless hex drive on one end and a cup-shaped indentation on the other. Cup point socket screws are used for specialty applications that require very low-profile fastening.
Cup Point Set Screws
Flat point set screws feature a flat end, allowing for fastening to delicate materials. Flat point set screws can be used as backing for plastic or soft metal surfaces.
Flat Point Set Screws
Cone point set screws are headless screws characterized by a pointed end, designed to provide a firm, permanent hold. These screws are used in a wide range of applications.
Cone Point Set Screws
Oval point set screws, or rounded end set screws, are headless screws ideal for applications requiring frequent adjustments. The oval end of the screw reduces indentation, allowing for readjustments without damaging the fastened material's surface.
Oval Point Set Screws
Dog point set screws are headless socket screws with a flat surface on the end of the screw shaft. Dog point set screws are designed to be permanently fastened, fitting into a matching hole.
Dog Point Set Screws
Fastco stocks socket screws in several materials with various finishes and coatings. Material and finish options for socket cap screws at Fastco include:
Socket Screw Materials & Finishes
- Plain steel
- Zinc-coated steel
- 304 (18-8) stainless steel
- 316 stainless steel
- Black Oxide