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.377 Insulating Washers (Flat)

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*Slightly Chamfered to Permit Smooth Entry / Fit.

Build Part Number
Material & Shape
Tolerances		 All Technical Data
Worksheet Helper
Conversion Chart		 Metric Insulating Washers
Am. Standard Insulating Washers

.377 Inside Diameter - For Size 3/8"Fasteners
CHOOSE and write down your PART NUMBER
then Go to Skip Step 1
Part Number A C D Part Number A C D Part Number A C D  
WF3801 .500 .031 .377 WF3817 .625 .062 .377 WF3833 .750 .125 .377  
WF3802 .500 .047 .377 WF3818 .625 .093 .377 WF3834 .750 .156 .377  
WF3803 .500 .062 .377 WF3819 .625 .125 .377 WF3835 .750 .187 .377  
WF3804 .500 .093 .377 WF3820 .625 .156 .377 WF3836 .875 .047 .377  
WF3805 .500 .125 .377 WF3821 .625 .187 .377 WF3837 .875 .062 .377  
WF3806 .500 .156 .377 WF3822 .687 .031 .377 WF3838 .875 .093 .377  
WF3807 .500 .187 .377 WF3823 .687 .047 .377 WF3839 .875 .125 .377  
WF3808 .562 .031 .377 WF3824 .687 .062 .377 WF3840 .875 .156 .377  
WF3809 .562 .047 .377 WF3825 .687 .093 .377 WF3841 .875 .187 .377  
WF3810 .562 .062 .377 WF3826 .687 .125 .377 WF3842 .875 .250 .377  
WF3811 .562 .093 .377 WF3827 .687 .156 .377 WF3843 1.000 .047 .377  
WF3812 .562 .125 .377 WF3828 .687 .187 .377 WF3844 1.000 .062 .377  
WF3813 .562 .156 .377 WF3829 .750 .031 .377 WF3845 1.000 .093 .377  
WF3814 .562 .187 .377 WF3830 .750 .047 .377 WF3846 1.000 .125 .377  
WF3815 .625 .031 .377 WF3831 .750 .062 .377 WF3847 1.000 .156 .377  
WF3816 .625 .047 .377 WF3832 .750 .093 .377 WF3848 1.000 .187 .377  
  WF3849 1.000 .250 .377  
Tolerances

A

 Major Diameter + .010 / - .005
C Thickness .015  through  .063 ± .003
.064  through  .091 ± .006
.092 up   ± .009
D Inside Diameter + .010 /  - .000
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