Brass Slotted Flat Head Machine Screw
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Brass Slotted Flat Head Machine Screw

Machine screws are uniformly threaded fasteners with a blunt end that are used with a threaded nut or threaded into a tapped hole. The slotted flat head offers a countersunk design to allow for flush installation. These fasteners are available in brass.

Dimensional SpecificationsType 2A Threads for Machine Screws

Type 2A Threads for Machine Screws dimensions
ASME   B1.1 (2008)
Nominal
Size
Threads
per Inch
Allowance Major
Diameter
Pitch Diameter Stress
Area in2
Max Min Max Min Tolerance
#0 80 0.0005 0.0595 0.0563 0.0514 0.0496 0.001762 0.00180
#1 64 0.0006 0.0724 0.0686 0.0623 0.0603 0.001970 0.00263
#1 72 0.0006 0.0724 0.0689 0.0634 0.0615 0.001899 0.00278
#2 56 0.0006 0.0854 0.0813 0.0738 0.0717 0.002127 0.00370
#2 64 0.0006 0.0854 0.0816 0.0753 0.0733 0.002040 0.00394
#3 48 0.0007 0.0983 0.0938 0.0848 0.0825 0.002302 0.00487
#3 56 0.0007 0.0983 0.0942 0.0867 0.0845 0.002191 0.00523
#4 40 0.0008 0.1112 0.1061 0.0950 0.0925 0.002507 0.00604
#4 48 0.0007 0.1113 0.1068 0.0978 0.0954 0.002361 0.00661
#5 40 0.0008 0.1242 0.1191 0.1080 0.1054 0.002562 0.00796
#5 44 0.0007 0.1243 0.1195 0.1095 0.1070 0.002484 0.00830
#6 32 0.0008 0.1372 0.1312 0.1169 0.1141 0.002820 0.00909
#6 40 0.0008 0.1372 0.1321 0.1210 0.1184 0.002614 0.01015
#8 32 0.0009 0.1631 0.1571 0.1428 0.1399 0.002916 0.01400
#8 36 0.0008 0.1632 0.1577 0.1452 0.1424 0.002804 0.01474
#10 24 0.0010 0.1890 0.1818 0.1619 0.1586 0.003319 0.01750
#10 32 0.0009 0.1891 0.1831 0.1688 0.1658 0.003004 0.02000
#12 24 0.0010 0.2150 0.2078 0.1879 0.1845 0.003400 0.02420
#12 28 0.0010 0.2150 0.2085 0.1918 0.1886 0.003224 0.02580
1/4 20 0.0011 0.2489 0.2408 0.2164 0.2127 0.003731 0.03180
1/4 28 0.0010 0.2490 0.2425 0.2258 0.2225 0.003322 0.03640
5/16 18 0.0012 0.3113 0.3026 0.2752 0.2712 0.004041 0.05240
5/16 24 0.0011 0.3114 0.3042 0.2843 0.2806 0.003660 0.05800
3/8 16 0.0013 0.3737 0.3643 0.3331 0.3287 0.004363 0.07750
3/8 24 0.0011 0.3739 0.3667 0.3468 0.3430 0.003804 0.08780
1/2 13 0.0015 0.4985 0.4876 0.4485 0.4435 0.004965 0.14190
1/2 20 0.0013 0.4987 0.4906 0.4662 0.4619 0.004288 0.15990
Tolerance
on Length
Nominal
Screw Size
Nominal Screw Length
Up to 1/2 in., incl. Over 1/2 to 1 in., incl. Over 1 to 2 in., incl. Over 2 in.
0 thru 12 -0.02 -0.03 -0.06 -0.09
L 1/4 thru 3/4 -0.03 -0.03 -0.06 -0.09
  1. All dimensions are in inches.

Dimensional SpecificationsSlotted Flat Head Machine Screw

Slotted Flat Head for Machine Screws dimensionsSlotted Flat Head for Machine Screws dimensions
ASME B18.6.3-2013
Nominal
Size
A H J T M R N F G Phillips
Drive
Size
Head Dimensions Slot Dimensions Phillips Dimensions Protrusion
Above
Gaging
Diameter
Gaging
Diameter
Diameter Height Width Depth Diam. Depth Width
Max Min Max Min Max Min Max Min Max Min
#0 0.112 0.096 0.035 0.026 0.023 0.016 0.015 0.010 0.062 0.035 0.014 0.026 0.016 0.078 0
#1 0.137 0.120 0.043 0.033 0.026 0.019 0.019 0.012 0.070 0.043 0.015 0.028 0.016 0.101 0
#2 0.162 0.144 0.051 0.040 0.031 0.023 0.023 0.015 0.096 0.055 0.017 0.029 0.017 0.124 1
#3 0.187 0.167 0.059 0.047 0.035 0.027 0.027 0.017 0.100 0.060 0.018 0.031 0.018 0.148 1
#4 0.212 0.191 0.067 0.055 0.039 0.031 0.030 0.020 0.122 0.081 0.018 0.032 0.019 0.172 1
#5 0.237 0.215 0.075 0.062 0.043 0.035 0.034 0.022 0.148 0.074 0.027 0.034 0.020 0.196 2
#6 0.262 0.238 0.083 0.069 0.048 0.039 0.038 0.024 0.168 0.094 0.029 0.036 0.021 0.220 2
#8 0.312 0.285 0.100 0.084 0.054 0.045 0.045 0.029 0.182 0.110 0.030 0.039 0.023 0.267 2
#10 0.362 0.333 0.116 0.098 0.060 0.050 0.053 0.034 0.198 0.124 0.032 0.042 0.025 0.313 2
#12 0.412 0.380 0.132 0.112 0.067 0.056 0.060 0.039 0.262 0.144 0.035 0.045 0.027 0.362 3
1/4 0.477 0.442 0.153 0.131 0.075 0.064 0.070 0.046 0.276 0.160 0.036 0.050 0.029 0.424 3
5/16 0.597 0.556 0.191 0.165 0.084 0.072 0.088 0.058 0.358 0.205 0.061 0.057 0.034 0.539 4
3/8 0.717 0.670 0.230 0.200 0.094 0.081 0.106 0.070 0.386 0.234 0.065 0.065 0.039 0.653 4
1/2 0.815 0.765 0.223 0.186 0.106 0.091 0.103 0.065 0.418 0.265 0.069 0.081 0.049 0.739 4
  1. All dimensions are in inches.
Brass Slotted Flat Head Machine Screw
View
Diameter Thread Pitch Length Item # Availability Price Quantity UOM
#4 40 3/8 MFSB 40037 3-5 Working Days $0.14217/EA EA
#4 40 5/8 MFSB 40062 3-5 Working Days $0.17381/EA EA
#4 40 3/4 MFSB 40075 3-5 Working Days $0.20585/EA EA
#4 40 1 MFSB 40100 3-5 Working Days $0.2483/EA EA
#4 40 1 1/4 MFSB 40125 In Stock $0.0801/EA EA
#6 32 1/4 MFSB 60025 In Stock $0.04005/EA EA
#6 32 3/8 MFSB 60037 In Stock $0.0801/EA EA
#6 32 1/2 MFSB 60050 3-5 Working Days $0.26432/EA EA
#6 32 3/4 MFSB 60075 3-5 Working Days $0.2459/EA EA
#6 32 1 MFSB 60100 3-5 Working Days $0.38406/EA EA
#6 32 1 1/4 MFSB 60125 In Stock $0.12014/EA EA
#6 32 1 1/2 MFSB 60150 In Stock $0.20024/EA EA
#6 32 2 MFSB 60200 In Stock $0.24029/EA EA
#8 32 3/8 MFSB 80037 3-5 Working Days $0.23588/EA EA
#8 32 1/2 MFSB 80050 In Stock $0.12014/EA EA
#8 32 5/8 MFSB 80062 In Stock $0.25951/EA EA
#8 32 3/4 MFSB 80075 In Stock $0.12014/EA EA
#8 32 1 MFSB 80100 In Stock $0.12014/EA EA
#8 32 1 1/4 MFSB 80125 3-5 Working Days $0.76692/EA EA
#8 32 1 1/2 MFSB 80150 In Stock $0.24029/EA EA
#8 32 2 MFSB 80200 In Stock $0.6986/EA EA
#10 24 3/8 MFSB1020037 3-5 Working Days $0.47537/EA EA
#10 24 1/2 MFSB1020050 In Stock $0.12014/EA EA
#10 24 3/4 MFSB1020075 In Stock $0.20024/EA EA
#10 24 1 MFSB1020100 In Stock $0.16019/EA EA
#10 24 1 1/4 MFSB1020125 In Stock $0.24029/EA EA
#10 24 1 1/2 MFSB1020150 In Stock $0.32038/EA EA
#10 24 2 MFSB1020200 In Stock $0.36043/EA EA
#10 24 2 1/2 MFSB1020250 In Stock $0.40048/EA EA
#10 24 3 MFSB1020300 In Stock $0.44053/EA EA
#10 32 3/8 MFSB1030037 In Stock $0.15579/EA EA
#10 32 1/2 MFSB1030050 In Stock $0.27457/EA EA
#10 32 3/4 MFSB1030075 In Stock $0.41426/EA EA
#10 32 1 MFSB1030100 3-5 Working Days $0.81578/EA EA
#10 32 1 1/4 MFSB1030125 In Stock $0.24029/EA EA
#10 32 1 1/2 MFSB1030150 In Stock $0.24029/EA EA
#10 32 2 MFSB1030200 In Stock $0.51974/EA EA
#10 32 2 1/2 MFSB1030250 3-5 Working Days $1.15499/EA EA
#10 32 3 MFSB1030300 3-5 Working Days $1.27873/EA EA
#12 24 1/2 MFSB1220050 In Stock $0.28034/EA EA
#12 24 3/4 MFSB1220075 3-5 Working Days $0.90108/EA EA
#12 24 1 MFSB1220100 In Stock $0.36043/EA EA
#12 24 1 1/4 MFSB1220125 In Stock $0.44053/EA EA
#12 24 1 1/2 MFSB1220150 3-5 Working Days $1.38126/EA EA
1/4 20 3/8 MFSB0250037 In Stock $0.20024/EA EA
1/4 20 1/2 MFSB0250050 In Stock $0.24029/EA EA
1/4 20 3/4 MFSB0250075 In Stock $0.54065/EA EA
1/4 20 1 MFSB0250100 In Stock $0.16019/EA EA
1/4 20 1 1/4 MFSB0250125 In Stock $0.93156/EA EA
1/4 20 1 1/2 MFSB0250150 In Stock $0.79131/EA EA
1/4 20 1 3/4 MFSB0250175 In Stock $1.08434/EA EA
1/4 20 2 MFSB0250200 In Stock $1.21594/EA EA
1/4 20 2 1/2 MFSB0250250 3-5 Working Days $2.85142/EA EA
1/4 20 3 MFSB0250300 3-5 Working Days $3.02123/EA EA
5/16 18 3/4 MFSB0310075 In Stock $0.24029/EA EA
5/16 18 1 MFSB0310100 In Stock $0.24029/EA EA
5/16 18 1 1/4 MFSB0310125 In Stock $0.92683/EA EA
5/16 18 1 1/2 MFSB0310150 In Stock $1.26151/EA EA
5/16 18 1 3/4 MFSB0310175 In Stock $1.72968/EA EA
5/16 18 2 MFSB0310200 In Stock $0.36043/EA EA
5/16 18 2 1/2 MFSB0310250 In Stock $2.68322/EA EA
5/16 18 3 MFSB0310300 3-5 Working Days $2.91582/EA EA
3/8 16 3/4 MFSB0370075 In Stock $1.0012/EA EA
3/8 16 1 1/4 MFSB0370125 In Stock $1.33424/EA EA
3/8 16 1 1/2 MFSB0370150 In Stock $1.40168/EA EA
3/8 16 1 3/4 MFSB0370175 In Stock $2.23568/EA EA
3/8 16 2 MFSB0370200 In Stock $1.65398/EA EA
3/8 16 3 MFSB0370300 In Stock $2.76332/EA EA
1/2 13 1 MFSB0500100 In Stock $2.9298/EA EA
1/2 13 1 1/4 MFSB0500125 In Stock $0.44053/EA EA
1/2 13 1 1/2 MFSB0500150 In Stock $0.52062/EA EA