Kohler 10CCOZ61 Service Manual page 96

Hex. Head
American Standard
Grade 2
Major Thread Diameter In Fractional
Inches Or Screw Number Size
Major Thread Diameter In Millimeters
Plain Split Lock
Washer Washer or
Spring Washer
There is no marking to identify hardness. Usually hardened washers have a
black oxide or black phosphate finish rather than a zinc (silver-colored) finish.
Internal Dimension
10-4 Common Hardware
Nuts
STYLES
Lock Nut or
Nylock Nut
GRADE (HARDNESS)
Grade 5
SAMPLE DIMENSIONS
American Standard
M8-1.25
Washers
STYLES
Spring Washer
or Wave Washer
GRADE (HARDNESS)
SAMPLE DIMENSIONS
Plain Washers
9/32 x 5/8 x 1/16
External Dimension
Lock Washers
Internal Dimension
Figure 10-4. Nuts and Washers
Square Nut Cap Nut or
Acorn Nut
6.8 8.8
1/4-20
Threads Per Inch
Metric
Distance Between Threads In Millimeters
External
Tooth Lock
Washer
Thickness
5/8
Wing Nut
Metric
10.9
12.9
Internal Internal-External
Tooth Lock Tooth Lock Washer
Washer
TP-5648 8/93