Optimum locking device for use in applications with hardened faying or bearing surfaces. The “Split” in the helical spring lock washer absorbs initial driving torque and visually closes under nominal bolt loading. When tension in the assembly is reduced and loosening occurs, it provides resistance to the back-off rotation of the screw.

Nominal Washer Size Inside Diameter, A Regular Heavy Extra Duty; Max. Min. O.D., B Max. Section Width, W Section Thickness, T a O.D., B Max. Section Width, W

the spring characteristics of very long bolts. An auxiliary spring element, such as helical spring lock washer, is a very effective alternative. Tests run by Lawrence Technological University

To name a few of the washers we stock, we have spring washer/helical lock washers, spherical washer with conical seat, plain/punched/plate washers, belleville washers, HSFG washers, disc springs, taper washer, wedge lock washer, wave washers for ball bearings, serrated lock washers - internal and external, rib washers, shims and support rings.

the spring characteristics of very long bolts. An auxiliary spring element, such as helical spring lock washer, is a very effective alternative. Tests run by Lawrence Technological University

20000 pcs) #4, Helical Spring Lock Washers, Medium Split, Steel, Yellow Zinc, MS35338, DFARS : Industrial & Scientific

Regular helical spring lock washer ASME B18.21.1 Silicon bronze C65100U43150 · View price · View · Show 4 variants · Regular helical spring lock washer ASME 

316 Stainless: SAE J405 316 stainless steel. Hardness. Carbon & High-Alloy Steel: Rockwell C38 - 46. Stainless: Thru 5/8": Rockwell C35 - 43; Sizes over 5/8": Rockwell C32 - 43. Twist Test. With the washer in a vice with the split ends free and directly above the vice jaws, a 90 Degree section of the free end is clutched.

Helical spring lock washers are one of the most common anti-loosening components used for a great variety of general industrial assemblies. Constructed from hardened steel material, our helical spring lock washers meet ANSI B18.21.1 dimensional specifications and are equipped with a plain finish. Other materials and finishes available.

Our lockwashers are made in the USA. They meet all ASME standards in addition to RoHS and DFARS compliance when required. Below we have charts for MS35338, NAS1640, and 12387272 Mil-Spec parts. We also have Regular Helical Spring Split Lockwashers. Material. C/S = Carbon Steel. 304 SS = Type 304 Stainless Steel. 316 SS = Type 316 Stainless Steel.

Washers that use a positive locking action when compressed in order to secure bolts or nuts to prevent them from loosening when exposed to vibrations. SIGN IN. REGISTER. 0. CART. 0. MENU. MENU. ACCOUNT CART ALL CATEGORIES . Air Compressors . Abrasives . Adhesives & Sealants . Cutting Tools . Chemicals . Electrical Products . Fasteners .