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Slotted Hex Washer Head Sheet Metal Screws 18-8 Stainless Steel

Slotted Hex Washer Head Sheet Metal Screws 18-8 Stainless Steel


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Slotted Hex Washer Head Sheet Metal Screws 18-8 Stainless Steel

Sheet metal screws or tapping screws are designed to bind sheet metal to wood and sometimes fiberglass. Manufactured with a sharper, more pronounced thread that allows the screw to better tap or penetrate metal surfaces.

Slotted Hex Washer Head Sheet Metal Screws 18-8 Stainless Steel
Nominal
Size
Width Across
Flats
Width
Across
Corners
Height of
Head
Diameter of
Washer
Thickness of
Washer
Width of
Slot
Depth of
Slot
Max. Min. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min.
4 .188 .181 .202 .060 .049 .243 .225 .019 .011 .039 .031 .036 .025
6 .250 .244 .272 .093 .080 .328 .302 .025 .015 .048 .039 .046 .033
7 .250 .244 .272 .093 .080 .328 .302 .029 .017 .048 .039 .054 .040
8 .250 .244 .272 .110 .096 .348 .322 .031 .019 .054 .045 .066 .052
10 .312 .305 .340 .120 .105 .414 .384 .031 .019 .060 .050 .072 .057
12 .312 .305 .340 .155 .139 .432 .398 .039 .022 .067 .056 .093 .077
14 .375 .367 .409 .190 .172 .520 .480 .050 .030 .075 .064 .101 .083
1/4 .375 .367 .409 .190 .172 .520 .480 .050 .030 .075 .064 .101 .083
Type AB Threads for Self Tapping/Sheet Metal Screws
Diameter Threads
Per Inch
Major Diameter Minor Diameter Minimum Practical
Screw Length
Max. Min. Max. Min. 90o Heads Countersunk
Heads
2 .0860 32 .088 .082 .064 .060 3/16 7/32
3 .0990 28 .101 .095 .075 .071 3/16 1/4
4 .1120 24 .114 .108 .086 .082 7/32 9/32
5 .1250 20 .130 .123 .094 .090 1/4 5/16
6 .1380 20 .139 .132 .104 .099 9/32 11/32
7 .1510 19 .154 .147 .115 .109 5/16 3/8
8 .1640 18 .166 .159 .122 .116 5/16 3/8
10 .1900 16 .189 .182 .141 .135 3/8 7/16
12 .2160 14 .215 .208 .164 .157 7/16 21/32
1/4 .2500 14 .246 .237 .192 .185 1/2 19/32