HEX HEAD SELF TAPPING SCREWS
Head Dimensions



Head Dimensions for Hex Head Self Tapping Screws - ANSI B18.6.4


Nominal
Size
A W H F U J T
Width
Across Flats
Width
Across
Corners
Head
Height
Washer
Diameter
Washer
Thickness
Slot Width Slot Depth
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
5/16 .500 .489 .545 .230 .208 .676 .624 .055 .035 .084 .072 .122 .100
3/8 .562 .551 .614 .295 .270 .780 .720 .063 .037 .094 .081 .156 .131




Smith Fastener Company • 3613 East Florence Avenue, Bell, California, 90201
Phone: ( 323 ) 587-0382 • FAX: ( 323 ) 587-8712 • E-mail: [email protected]
Copyright © 2009 by Smith Fastener Company

Hitch Pins | Construction/Lifting | Blind Rivets | Dowel Pins | Cotter Pins | Nuts, Bolts, Screws, Washers
Threaded Inserts | Anchors | Pins | Automotive | Weatherhead Pipe Fittings | Cutting Tools