Machine Screw Heads Datasheet

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Datasheet

70
Machine ScrewS
HEAD DIMENSIONS
Pa n He a d s f o r Ma c H i n e sc r e w s a n d seMs ASME B18.6.3-2010
Nominal
Size
A H H1 J T M G
Phillips
Driver
Size
Head Diameter
Height of Head
Width of Slot Depth of Slot
Dimensions of Recess
Slotted Recessed Diameter Recess Penetration
Gaging Depth
Max Min Max Min Max Min Max Min Max Min Ref Max Min
0 .116 .104 .039 .031 .044 .036 .023 .016 .022 .014 .060 .032 .014 0
2 .167 .155 .053 .045 .062 .053 .031 .023 .031 .022 .097 .052 .034 1
3 .193 .180 .060 .051 .071 .062 .035 .027 .036 .026 .105 .061 .043 1
4 .219 .205 .068 .058 .080 .070 .039 .031 .040 .030 .115 .071 .053 1
5 .245 .231 .075 .065 .089 .079 .043 .035 .045 .034 .152 .072 .046 2
6 .270 .256 .082 .072 .097 .087 .048 .039 .050 .037 .159 .080 .055 2
8 .322 .306 .096 .085 .115 .105 .054 .045 .058 .045 .175 .097 .071 2
10 .373 .357 .110 .099 .133 .122 .060 .050 .068 .053 .192 .113 .089 2
12 .425 .407 .125 .112 .151 .139 .067 .056 .077 .061 .252 .124 .098 3
1/4 .492 .473 .144 .130 .175 .162 .075 .064 .087 .070 .274 .144 .118 3
5/16 .615 .594 .178 .162 .218 .203 .084 .072 .106 .085 .343 .173 .149 4
3/8 .740 .716 .212 .195 .261 .244 .094 .081 .124 .100 .382 .213 .190 4
1/2 .987 .958 .281 .260 .348 .325 .106 .091 .161 .131 .428 .260 .235 4
co M b i n a t i o n dr i v e Pa n He a d s f o r Ma c H i n e sc r e w s ASME B18.6.3-
2010
Nominal
Screw
Size
G H J A M T N
Recess
Penetration Driver
Size
Head Dimensions Slot Dimensions Recess Dimensions
Head
Diameter Head Height Width Depth Diameter Depth Recess
Width
Max Min Max Min Max Min Max Min Max Min Max Min Min Max Min
4 .219 .205 .080 .070 .039 .031 .040 .027 .122 .109 .078 .060 .019 .071 .053 1
6 .270 .256 .097 .087 .048 .039 .050 .033 .166 .153 .091 .066 .028 .080 .055 2
8 .322 .306 .115 .105 .054 .045 .058 .041 .182 .169 .108 .082 .030 .097 .071 2
10 .373 .357 .133 .122 .060 .050 .068 .048 .199 .186 .124 .100 .031 .113 .089 2
12 .425 .407 .151 .112 .067 .056 .077 .055 .259 .246 .141 .115 .034 .124 .098 3
1/4 .492 .473 .175 .162 .075 .064 .087 .063 .281 .268 .161 .135 .036 .144 .118 3
5/16 .615 .594 .218 .203 .084 .072 .106 .076 .350 .337 .193 .169 .059 .173 .149 4
G
H
A
T
J
N
M
H1
H
J
TG
AMA
Slotted5Phillips
Pan
Combo Pan
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