Fillister Head Machine Screws: Size Chart & Specifications

 Fillister Head Machine Screws Drawing

 

Fillister Head Machine Screws - Slotted & Phillips Size Chart (ASME B18.6.3-2013)

Nominal
Size

 A H O J T M R N Phillips
Driver Size
Head Diameter
 Height of Hand Width of Slot Depth of Slot Dimensions of Recess
Side
Height		 Total Height Diameter Depth Width
Max Min Min Max Max Min  Max   Min Max Min Max Min Max Min
0 .096 .083 .043 .038 .055 .047 .023 .016 .025 .015 .067 .054 .039 .013 0
2 .140 .124 .062 .053 .083 .066 .031 .023 .037 .025 .104 .091 .059 .017 1
3 .161 .145 .070 .061 .095 .077 .035 .027 .043 .030 .112 .099 .068 .019 1
4 .183 .166 .079 .069 .107 .088 .039 .031 .048 .035 .122 .109 .078 .019 1
5 .205 .187 .088 .078 .120 .100 .043 .035 .054 .040 .143 .130 .067 .027 2
6 .226 .208 .096 .086 .132 .111 .048 .039 .060 .045 .166 .153 .091 .028 2
8 .270 .250 .113 .102 .156 .133 .054 .045 .071 .054 .182 .169 .108 .030 2
10 .313 .292 .130 .118 .180 .156 .060 .050 .083 .064 .199 .186 .124 .031 2
12 .357 .334 .148 .134 .205 .178 .067 .056 .094 .074 .259 .246 .141 .034 3
1/4 .414 .389 .170 .155 .237 .207 .075 .064 .109 .087 .281 .268 .161 .036 3
5/16 .518 .490 .211 .194 .295 .262 .084 .072 .137 .110 .322 .309 .203 0.42 3
3/8 .622 .590 .253 .233 .355 .315 .094  .081 .164 .133 .389 .376 .233 0.65 4