The MD0137MQA080 is a curved spring washer compliant with DIN 137 Type A, designed for use with M4 screws. It has an inside diameter of 4.3 mm, an outside diameter of 8 mm, a thickness of 0.8 mm, and a spring height of 0.5 mm. The washer is made of spring steel with a hardness of HRC 43 to 50 and has a zinc finish. Tolerances for the inside diameter are +0.30/0 mm, and for the outside diameter, ±0.45 mm. The product is priced per 100 pieces.
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 | Washers |
| Product Number | MD0137MQA080 |
| Product Name | Curved Spring Washer, 4.3mm Inside Diameter, 8mm Outside Diameter, M4 Screw Size, Material- Spring Steel HRC 43-50. |
| Washer Type | Bowed or Curved |
| Material | Spring Steel HRC 43-50; Spring Steel |
| Inside Diameter | 0.169 inch (4.300 mm) |
