Socket head shoulder screws in the A 9X25 series are precision fasteners with a threaded portion and a smooth shoulder for alignment and bearing surfaces, made from 303 stainless steel. The A 9X25-1212A variant has a 5/16-18 thread, a 0.375 inch shoulder diameter, and a 0.375 inch shoulder length, with a 0.500 inch overall length and a 3/16 inch knurl diameter. The part features a 45-degree chamfer on both ends and is designed for inch-size applications per ANSI/ASME B18.3-1986.
Industrial fasteners are hardware devices that join two or more items together, creating a semi-permanent or permanent connection. The fasteners most frequently used by machinery designers are screws, nuts, retaining rings, and various types of pins because of the basic role that they play in the assembly of mechanisms. Various industrial hardware components are used in the assembly process including knobs, washers, spacers, shims, handles, springs, spring-powered reels, and ball plunger screws.
Fasteners play a vital role in a wide range of applications, from everyday household items to medical devices, robotics, and even outer space. Careful consideration must be given before selecting the most appropriate fastener for an application.
Download Reference Tables to help with selection:
| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Screws |
| Product Number | A 9X25-1212A |
| Product Name | 5/16-18 Thread, 0.375" Shoulder Dia., 0.375" Shoulder Length Shoulder Screw |
| Screw Type | Shoulder Screw |
