Washers Swing “C” Washer Assembly The Swing “C” Washer has a concave center for self-locating around the stud, which prevents creeping while tightening, and allows acceptance of the mating spherical ange nuts. The Spherical Flange Nut assures that the washer cannot back out either during clamping or due to vibration during the operation. The shoulder screw has a nylon lock to prevent loosening of the screw during operation. • Material: Low Carbon Steel • Finish: Black Oxide • Heat Treat: Case Hardened Part Number A Stud Size B C D E F G R Part Number Wt. (lbs) Spherical Flange Nut 37301* 1 3/8 1/4 13/16 5/16-18 1/2 3/8 3/4 39704 .12 37302 1 1/4 1/2 3/8 1 1/8 5/16-18 1/2 1/2 1 39705 .30 37303* 1 1/2 5/8 3/8 1 5/16 3/8-16 5/8 9/16 1 1/8 39706 .39 37304* 1 3/4 3/4 1/2 1 9/16 3/8-16 5/8 5/8 1 1/4 39707 .72 *Conforms to TCMA Heavy Duty Square Washers • Material: Low Carbon Steel • Finish: Black Oxide • Heat Treat: Case Hardened Part Number ±.010 A ±.010 B Bolt Size Thickness 31920 11/32 1 3/8 5/16 3/16 31921 13/32 1 3/8 3/8 3/16 31932 17/32 1 3/8 1/2 1/4 31933 17/32 2 1/2 1/4 31934 21/32 2 5/8 1/4 31935 13/16 2 3/4 1/4 31922 15/16 2 7/8 1/4 31936 13/16 2 1/2 3/4 1/4 31923 15/16 2 1/2 7/8 1/4 31937 1 1/16 2 1/2 1 1/4 31924 13/16 3 3/4 5/16 31926 1 1/16 3 1 5/16 31927 1 1/16 3 1 3/8 31928 1 5/16 3 1 1/4 3/8 31929 1 9/16 3 1 1/2 3/8 WORKHOLDING COMPONENTS WORKHOLDING COMPONENTS workholding solutions Phone: 877-426-2504 | Fax: +1 216-481-6193 | E-mail: info@jergensinc.com | www.jergensinc.com 289
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