82 Degree Flat Head Undercut Machine Screws: Size Chart & Specifications

 82 Degree Undercut Flat Heads For Machine Screws Drawing

82 Degree Undercut Flat Head Machine Screws Slotted & Phillips Drive Size Chart

Nominal Bolt Size

 L A H J T M R N F G Phillips Driver Size 
These Lengths or Shorter are Undercut Head Dimensions Slot Dimensions Recess Dimensions Protrusion Above Gaging Diameter Gaging Diameter
Diameter Height Width Depth Diam. Depth Width
Max Min Max Min Max Min Max Min  Ref Ref  Ref Max Min 
0 1/8 .112 .096 .025 .018 .023 .016 .011 .007 .062 .035 .014 - - - 0
1 1/8 .137 .120 .031 .023 .026 .019 .014 .009 .070 .043 .015 - - - 0
2 1/8 .162 .144 .036 .028 .031 .023 .016 .011 .088 .048 .017 .029 .017 .124 1
4 3/16 .212 .191 .047 .038 .039 .031 .022 .014 .110 .070 .018 .032 .19 .172 1
5 3/16 .237 .215 .053 .043 .043 .035 .024 .016 .122 .081 .018 .034 .020 .196 1
6 3/16 .262 .238 .059 .048 .048 .039 .027 .017 .140 .066 .025 .036 .021 .220 2
8 1/4 .312 .285 .070 .058 .054 .045 .032 .021 .168 .094 .029 .039 .023 .267 2
10 5/16 .362 .333 .081 .068 .060 .050 .037 .024 .182 .110 .030 .042 .025 .313 2
12 3/8 .412 .380 .092 .078 .067 .056 .043 .028 .226 .110 .030 .045 .027 .362 3
1/4 7/16 .477 .442 .107 .092 .075 .064 .050 .032 .244 .124 .032 .050 .029 .424 3
5/16 1/2 .597 .556 .134 .116 .084 .072 .062 .041 .310 .157 .053 .057 .034 .539 4
3/8 9/16 .717 .670 .161 .140 .094 .081 .075 .049 .358 .205 .061 .065 .039 .653 4
1/2 3/4 .815 .765 .156 .130 .106 .091 .072 .046 .402 .252 .068 .081 .049 .739 4