A type of bolt with a recess inside the bolt's head. Socket head cap screws require assembly with a hex key (Allen Key) or a hex bit driven by an impact tool. Hex socket (Allen) drives are compact and easy to drive, but prone to cam-out.
Bayou City Bolt carries a complete line of Hex Head and Socket Cap Screws. These bolts are available in both US Standard and Metric. Hex Bolts are stocked in Low Carbon, Alloy Steel, Brass, Aluminum
- Socket Head Cap Screws
- Flat Head Socket Caps
- Button Head Socket Cap Screws
- Low Head Socket Cap Screws
- 1936 Series Socket Cap Screws
- Ferry Cap Screws
- 12 Point Screws
B7 Hex Keys in both US and Metric are in stock at Bayou City Bolt. Sizes range from 1/16” thru 2” and 1 MM thru 36 MM.
- US & Metric
The most common types of Socket Cap Screws are:
- Socket head cap screw - long cylindrical heads
- Flat heads - countersunk (cone shaped under the head) with a flat top.
- Button heads are rounded and low profile
Button & Socket Head Cap Screws
A socket set screw is a type of screw used to secure an object within or against another object. Pulley's, gears, and shafts are the most common uses for set screws. Set screws are usually headless, (no head projecting beyond the major diameter of the screw thread, and fully threaded. The set 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 a clamping force through the bottom tip that projects through the hole. Socket set screws can have a variety of tips, including but not limited to - cup point, knurled point, cone point and dog point.
GOVERNING STANDARDS
| ASTM A574 | Standard Specification for Alloy Steel Socket-Head Cap Screws |
| ANSI B18.3 | Socket Head Cap Screw |
| ASTM F912 | Standard Specification for Alloy Steel Socket Set Screws |
| ASME B1.13M | Metric Screw Threads |
| DIN912 | 12.9 Hexagon Socket Head Cap Screws |
| DIN 916 | Socket Set Screws Cup Point |
