Compression Spring， Stainless Steel， Metric， 3.6 mm OD， 0.4 mm Wire Size， 5.41 mm Compressed Length， 12 mm Free Length， 5.29 N Load Capacity， 0.78 N/mm Spring Rate (Pack of 10)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Stainless steel 301， 302 or 304 wire offers good mechanical properties with greater corrosion and heat resistance than music wire</li><li>Spring ends are closed (squared)， but not ground for efficient force transfer and reduced possibility of tangling</li><li>Load capacity of 5.29 newtons</li><li>Maximum operating temperature of 500 degrees F (260 degrees C)</li><li>All dimensions and forces meet DIN 2095 (Grade 2)</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31Tah15TBDL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41wHBjFJYHL.jpg' noproxy></br>