OVAL HEAD SELF TAPPING SCREWS
Head Dimensions

Oval Head Self Tapping Screws
Head Dimensions
Undercut Oval Head Self Tapping Screws
Head Dimensions



Slotted and Phillips Drive Oval Head Self Tapping Screws
ANSI B18.6.4 1998

Oval Head Image Protusion gage image Oval Head Image
Nominal
Size
A H O J T M R N F G Phillips
Driver
Size
Head
Diameter
Head Height Slot Width Slot Depth Dimensions
of Recess
Protrusion
Above Gaging
Diameter
Gaging
Dia
Side Total Dia Depth Width
Max Min Max Max Max Min Max Min Ref Ref Ref Min Max
0 .112 .096 .035 .056 .023 .016 .030 .025 .068 .036 .014 .047 .031 .078 0
1 .137 .120 .043 .068 .026 .019 .038 .031 .070 .039 .015 .053 .035 .101 0
2 .162 .144 .051 .080 .031 .023 .045 .037 .106 .060 .018 .058 .039 .124 1
3 .187 .167 .059 .092 .035 .027 .052 .043 .118 .072 .019 .064 .044 .148 1
4 .212 .191 .067 .104 .039 .031 .059 .049 .130 .086 .019 .069 .048 .172 1
5 .237 .215 .075 .116 .043 .035 .067 .055 .152 .073 .028 .075 .053 .196 2
6 .262 .238 .083 .128 .048 .039 .074 .060 .172 .092 .030 .080 .057 .220 2
8 .312 .285 .100 .152 .054 .045 .088 .072 .186 .107 .031 .091 .066 .267 2
10 .362 .333 .116 .176 .060 .050 .103 .084 .202 .125 .033 .102 .075 .313 2
12 .412 .380 .132 .200 .067 .056 .117 .096 .264 .140 .038 .113 .084 .362 3
14 .462 .427 .148 .224 .075 .064 .132 .108 .282 .152 .039 .125 .093 .410 3
1/4 .477 .442 .153 .232 .075 .064 .136 .112 .284 .160 .040 .129 .095 .424 3
5/16 .597 .556 .191 .290 .064 .072 .171 .141 .384 .226 .065 .155 .117 .539 4
3/8 .717 .670 .230 .347 .094 .081 .206 .170 .404 .245 .068 .182 .139 .653 4
7/16 .760 .715 .223 .345 .094 .081 .210 .174 .416 .257 .070 .195 .150 .690 4
1/2 .815 .765 .223 .354 .106 .091 .216 .176 .430 .271 .071 .212 .163 .739 4



Slotted and Phillips Drive Undercut Oval Head Self Tapping Screws
ANSI B18.6.4 - 1998

Protusion gage image
Nominal Size These
Lengths or
Shorter are
Undercut
A H O J T M R N F G Phillips
Driver
Size
Head Dimensions Slot Dimensions Recess Dimensions Protrusion
Above
Gaging
Diameter
Gaging
Dia
Diameter Side
Height
Total
Height
Width Depth Dia Depth Width
Type
AB
Other
Types
Max Min Ref Max Min Max Min Max Min Ref Ref Ref Max Min
0 3/16 1/8 .112 .096 .025 .046 .033 .023 .016 .028 .022 .068 .036 .014 .047 .031 .078 0
1 3/16 5/32 .137 .120 .031 .056 .042 .026 .019 .034 .027 .070 .039 .015 .053 .035 .101 0
2 3/16 3/16 .162 .144 .036 .065 .050 .031 .023 .040 .033 .106 .060 .018 .058 .039 .124 1
3 7/32 7/32 .187 .167 .042 .075 .059 .035 .027 .047 .038 .118 .072 .019 .064 .044 .148 1
4 1/4 1/4 .212 .191 .047 .084 .067 .039 .031 .053 .043 .130 .086 .019 .069 .048 .172 1
5 1/4 1/4 .237 .215 .053 .094 .076 .043 .035 .059 .048 .152 .073 .028 .075 .053 .196 2
6 5/16 5/16 .262 .238 .059 .104 .084 .048 .039 .065 .053 .172 .092 .030 .080 .057 .220 2
7 3/8 3/8 .287 .262 .064 .113 .093 .048 .039 .071 .059 .176 .098 .030 .085 .062 .243 2
8 7/16 7/16 .312 .285 .070 .123 .101 .054 .045 .078 .064 .186 .107 .031 .091 .066 .267 2
10 1/2 1/2 .362 .333 .081 .142 .118 .060 .050 .090 .074 .202 .125 .033 .102 .075 .313 2
12 9/16 9/16 .412 .380 .092 .161 .135 .067 .056 .103 .085 .264 .140 .038 .113 .084 .362 3
1/4 5/8 5/8 .477 .442 .107 .186 .158 .075 .064 .119 .098 .284 .160 .040 .129 .095 .424 3
5/16 13/16 5/8 .597 .556 .134 .232 .198 .084 .072 .149 .124 .374 .214 .065 .155 .117 .539 4
3/8 - 5/8 .717 .670 .161 .278 .239 .094 .081 .179 .149 .394 .233 .068 .182 .139 .653 4
7/16 - 3/4 .760 .715 .156 .279 .239 .094 .081 .184 .154 .404 .245 .070 .195 .150 .690 4
1/2 - 3/4 .815 .765 .156 .288 .244 .106 .091 .204 .169 .416 .257 .071 .212 .163 .739 4




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

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