A 9X25-0406 is a socket head shoulder screw with a #4-40 thread, 0.125 inch shoulder diameter, and 0.188 inch shoulder length, made from 303 stainless steel. It features a 45-degree chamfer on both ends and meets ANSI/ASME B18.3 specifications. The screw has a head height of 0.094 inch, a socket drive size of 1/16 inch, and an overall length tolerance of +0.005 inch for the nominal dimension. The shoulder and thread are precision-machined to maintain alignment in assembly applications.
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 9X25-0406 |
| Product Name | #4-40 Thread, 0.125" Shoulder Dia., 0.188" Length Shoulder Screw |
| Screw Type | Shoulder Screw |
