There is a minimum order of $100.00

External Type Lockwashers - Mil-Spec

Provide maximum torsional resistance.
Work best with larger head screws (round, pan, binding, etc.)

MATERIALS: Part numbers shown are for washers made of spring steel, bronze alloy and in 400 series stainless steel. They are in stock at WCL. We also produce this type of external tooth lockwashers in 300 series stainless steel as well as other materials upon request. Specify material when inquiring or ordering by referencing the corresponding dash number of the size part desired.

We also have standard External Type Lockwashers.

SPECIFICATIONS: All commercial, AN, MS and NAS lockwashers supplied by WCL Company and listed on these pages, conform to ASME B18.21.1 or applicable specifications as reported by IFI and other reporting agencies. Manufacturers in countries outside the United States including, Mexico, Canada, China, Taiwan, India, UK, Spain, and Russia, mfg. parts from tooling owned in part or wholly by WCL Company. Materials and plating comply with applicable specifications and supporting documentation is available with orders. Parts plated with commercial Zinc plating can be supplied with Hexavalent free chromates. Certification of RoHS compliance is available upon request. DFARS 252.225-7014 Alt. 1 compliance certifications, if applicable may be available. Please check with your sales person at the time of quotation.

Nominal	Inside		Outside		Material		MS35335
Screw	Diameter		Diameter		Thickness		Steel	Stainless	Alloy
Size	Min.	Max.	Min.	Max.	Min.	Max.	Plated	Steel	Bronze
4	0.115	0.123	0.245	0.260	0.015	0.019	-29	-57	-85
6	0.141	0.150	0.305	0.320	0.016	0.022	-30	-58	-86
8	0.168	0.176	0.365	0.381	0.018	0.023	-31	-59	-87
10	0.195	0.204	0.395	0.410	0.020	0.025	-32	-60	-88
1/4	0.256	0.267	0.494	0.510	0.023	0.028	-33	-61	-89
5/16	0.320	0.332	0.588	0.610	0.028	0.034	-34	-62	-90
3/8	0.384	0.398	0.670	0.694	0.032	0.040	-35	-63	-91
7/16	0.448	0.464	0.740	0.760	0.032	0.040	-36	-64	-92
1/2	0.513	0.530	0.880	0.900	0.037	0.045	-37	-65	-93
9/16	0.576	0.596	0.960	0.985	0.037	0.045	-38	-66	-94
5/8	0.641	0.663	1.045	1.070	0.042	0.050	-39	-67	-95
3/4	0.768	0.795	1.220	1.260	0.047	0.055	-40	-68	-96
7/8	0.897	0.927	1.380	1.410	0.052	0.060	-41	-69	-97
1	1.025	1.060	1.590	1.620	0.059	0.067	-42	-70	-98

* Left Hand Twist
**Type B option also stocked

TYPE “B” TOOTH FORM

The Type “B” is listed as an alternative tooth form in ASME B18.21.1 Military Standards, S.A.E., etc. It is available for many of the styles and sizes of tooth washers shown in this catalog, including external, internal, external-internal and many others. To order, specify the WCL part number and designate “Type B” for example: 1114-00 Type B.

WCL Company • 16730 East Johnson Dr. • P.O. Box 3588 • Industry, CA 91744
Tel (626) 968-5523 • Fax (626) 369-9805 • We are Open 7am - 4:30pm, Pacific

WCL Company specializes in reliable low-cost, engineered high-performance fasteners, fittings, plastic components, washers, nuts, and a wide array of fastener components. WCL has 50 years of experience with all types of standard and engineered fasteners, and provides a comprehensive line of fastener products for sale from some of the world's leading manufacturers.