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The #12 Mechanical Zinc Finish Medium Split Lock Washer 1133616 by Fastenal is a high-quality fastener made of carbon steel with a grade of AISI 1055-1065. This washer features a mechanically deposited zinc finish, providing durability and corrosion resistance. Packaged in sets of 100, this split lock washer is designed for use with inch measurements, making it a versatile and reliable choice for various industrial and hardware applications.

Product Attributes

System of Measurement	Imperial (Inch)
Mating Fastener Size	#12
Material	Carbon Steel
Nominal Thickness	0.056"
Inner Diameter	0.220" - 0.227"
Outer Diameter	0.377"
Type	Split Lock Washer
Locking Style	Regular
Grade	AISI 1055-1065
Finish	Mechanically Deposited Zinc
Performance	Medium
Standards	ASME B18.21.1, ASTM B695 Class 5 Type I, 38-46 HRC
Product Weight	.11
UOM	each
Notes Also known as spring lock washers, these split lock washers provide a positive locking action. Spring like take-up compensates for loosening caused by slight material wear.