Washers T&B Catalog Number: 60803-TB UPC Number: Status: Description: 78621060803 Active Belleville Spring Washer, 1/2 Inch Bolt Size, Steel with Zinc Chromate Finish Application For tight, secure bus-bar connections. General Style Belleville Spring Washer Material Steel Finish Zinc Cromate Stud Size 1/2 Dimension Information C (inches) .813 D (inches) .095 Specifications Recommended Installing Torque In-Lbs. 175 - 200 Packaging T&B Order Multiple 25 T&B Inner Pack 25 Package in Units 250 T&B Sold in UOM Each T&B Weight Per UOM 2.5 lbs. per 100 Notes When bolting aluminum lugs and connectors to buss bars with steel or brass hardware, the recommended practice to ensure a tight connection is to use a Belleville spring washer on top of a flat washer under the bolt head or nut. For heavy-duty service where the heat rise is expected to exceed 30 degrees Celcius above ambient, this procedure maintains constant pressure as the connector metals expand and contract with temperature changes. Certifications RoHS Compliance Yes For further technical assistance, please contact us... Thomas & Betts - USA 8155 T&B Blvd. Memphis, TN 38125 www.tnb.com T&B Technical Support MS 3B-50 8155 T&B Blvd. Memphis, TN 38125 Hours: 7AM - 6PM CDT Monday-Friday Phone: (888) 862-3289 Fax: (901) 252-1321 Email:techsupport@tnb.com