Engineered Components - Anchor Bolt and Screw Company
Engineered Components - Anchor Bolt and Screw Company
Engineered Components - Anchor Bolt and Screw Company
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<strong>Engineered</strong><br />
<strong>Components</strong> COMPANY<br />
visit our web site for a video tour<br />
www.engcomponents.com<br />
RECOMMENDED HOLE SIZES<br />
FOR THREAD CUTTING SCREWS<br />
THICKNESS MATERIAL<br />
SCREW SIZE<br />
DRILL SIZES<br />
10-24<br />
NO. DIA.<br />
10-32<br />
NO. DIA.<br />
1/4-20<br />
NO. DIA.<br />
1/4-28<br />
NO. DIA.<br />
5/16-18<br />
NO. DIA.<br />
UP TO .047 STEEL 23 .154 20 .161 5 .205 7/32 .2188<br />
STAINLESS STEEL* 23 .154 20 .161 4 .209 7/32 .2188<br />
ALUMINUM-SHEET 24 .152 20 .161 13/64 .2031 7/32 .2188<br />
.063 STEEL 23 .154 19 .166 4 .209 7/32 .2188 17/64 .2656<br />
STAINLESS STEEL* 21 .159 19 .166 3 .213 2 .221 1 .272<br />
ALUMINUM-SHEET 24 .1562 20 .161 6 .204 7/32 .2188<br />
.094 STEEL 27 .159 19 .166 3 .213 2 .221 1 .272<br />
STAINLESS STEEL* 20 .161 18 .169 7/32 .2188 1 .228 J .277<br />
ALUMINUM-SHEET 5/32 .1562 19 .166 4 .209 2 .221<br />
.109 STEEL 20 .161 18 .169 3 .213 1 .228 1 .272<br />
STAINLESS STEEL* 19 .166 11/64 .1719 7/32 .2188 1 .228 J .277<br />
ALUMINUM-SHEET 22 .157 19 .166 4 .209 2 .221<br />
.125 STEEL 19 .166 18 .169 7/32 .2188 1 .228 J .277<br />
STAINLESS STEEL* 19 .166 11/64 .1719 2 .221 1 .228 K .281<br />
ALUMINUM-SHEET 21 .159 19 .166 3 .213 2 .221 I .272<br />
CAST ALUMINUM &<br />
ZINC DIE CAST<br />
19 .166 11/64 .1719 2 .221 1 .228 K .281<br />
CAST IRON 17 .173 16 .177 1 .228 15/64 .2344 L .290<br />
.188 STEEL 17 .173 16 .177 1 .228 15/64 .2344 L .290<br />
STAINLESS STEEL* 16 .177 15 .180 A .234 B .238 M .295<br />
ALUMINUM-SHEET 19 .166 11/64 .1719 2 .221 1 .228 K .281<br />
CAST ALUMINUM &<br />
ZINC DIE CAST<br />
19 .166 17 .173 2 .221 1 .228 9/32 .2812<br />
CAST IRON 16 .177 15 .180 15/64 .2344 B .238 M .295<br />
.250 STEEL 16 .177 15 .180 A .234 B .238 M .295<br />
STAINLESS STEEL* 15 .180 14 .182 15/64 .2344 C .242 19/64 .2969<br />
ALUMINUM-SHEET 11/64 .1719 16 .177 1 .228 15/64 .2344 L .290<br />
CAST ALUMINUM &<br />
ZINC DIE CAST<br />
18 .169 17 .173 1 .228 A .234 9/32 .2812<br />
CAST IRON 15 .180 14 .182 B .238 C .242 19/64 .2969<br />
.313 STEEL 16 .177 15 .180 A .234 B .238 M .295<br />
STAINLESS STEEL* 15 .180 14 .182 B .238 C .242 19/64 .2969<br />
ALUMINUM-SHEET 16 .177 15 .180 15/64 .2344 B .238 19/64 .2969<br />
CAST ALUMINUM &<br />
ZINC DIE CAST<br />
11/64 .1719 16 .177 1 .228 A .234 L .290<br />
CAST IRON 15 .180 14 .182 B .238 C .242 19/64 .2969<br />
.375 STEEL 16 .177 A .234 M .295<br />
& UP STAINLESS STEEL* 15 .180 B .238 19/64 .2969<br />
ALUMINUM-SHEET 16 .177 15/64 .2344 19/64 .2969<br />
CAST ALUMINUM &<br />
ZINC DIE CAST<br />
11/64 .1719 1 .228 L .290<br />
CAST IRON 15 .180 B .238 19/64 .2969<br />
These charts are Industry Guidelines. These specifications may not be suitable for your special application. *Values listed are for #410 corrosion<br />
resistant screws in high tensile stainless steel.<br />
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