Skip to content
Privacy Policy Return Policy Shipping Policy Contact Us
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100
McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100

McMaster 91169A210 Steel Split Lock Washer, for M10 Screw Size, 10.7 mm ID, 18.1 mm OD, Pack of 100

$50.65 - $50.65
$50.65
$50.65 - $50.65
$50.65

Stop nuts and screws from loosening due to mild vibration. As you tighten, the uneven ends bite into the nut or screw so it won't back out. While they're not as vibration resistant as other lock washers, they are a great fit for electrical panels, light fixtures, and other light duty assemblies. Split lock washers are not reusable, and they only work with fasteners that have right-hand threads.

Black-Oxide Steel—Best for dry environments since moisture will cause these washers to rust. They have a dark, matte appearance.

For Screw Size M10
ID 10.7 mm
OD 18.1 mm
Thickness 2.0 mm to 2.4 mm
Certificate Form Digital
Certificate Type Material Certificate with Traceable Lot Number
Finish Black Oxide
Hardness Rockwell C44
Material Steel
Specifications Met DIN 127B
System of Measurement Metric
Washer Type Split
Country of Origin United States, Belgium, Canada, China, France, Germany, India, Indonesia, Italy, Japan, Malaysia, Mexico, Philippines, Poland, South Korea, Switzerland, Taiwan, Thailand, Vietnam
DFARS Compliance Specialty Metals COTS-Exempt
Export Control Classification Number (ECCN) EAR99
REACH Compliance REACH (EC 1907/2006) (02/04/2026, 253 SVHC) Compliant
RoHS Compliance RoHS 3 (2015/863/EU) Compliant
Schedule B Number 731821.0000
U.S.–Mexico–Canada Agreement (USMCA) Qualifying No