S78ESY-012020125 is a helical extension spring with a 0.120 inch outer diameter, 0.020 inch wire diameter, and 1.25 inch free length, designed for applications requiring precise tension control. It has a maximum extended length of 1.84 inches at a load of 3.7 lbf and a spring rate of 2.50 lbf/in. The spring is made of 302 stainless steel, spring tempered, with crossover or machine loops supplied in either open or closed form at the manufacturer's option. The loop orientation and winding direction (right or left-hand) are not specified and may vary.
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 | Extension Springs |
| Product Number | S78ESY-012020125 |
| Product Name | 0.12" (OD), 1.25" Free Length, Helical Extension Spring |
| Material | Stainless steel |
| Outer Diameter (OD) | 0.1200 inch (3.05 mm) |
| Wire Diameter | 0.0200 inch (0.5080 mm) |
| Free Length | 1.25 inch (31.75 mm) |
