SS Slotted Flat Head Machine Screw
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SS 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 18-8 stainless steel.

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 for Machine Screws

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.
SS Slotted Flat Head Machine Screw
View
Diameter Length Item # Availability Price Quantity UOM
#4 1/4 MFSS 40025 In Stock $0.04005/EA EA
#4 5/16 MFSS 40031 In Stock $0.04005/EA EA
#4 3/8 MFSS 40037 In Stock $0.04005/EA EA
#4 7/16 MFSS 40043 In Stock $0.12014/EA EA
#4 1/2 MFSS 40050 In Stock $0.0801/EA EA
#4 5/8 MFSS 40062 In Stock $0.0801/EA EA
#4 3/4 MFSS 40075 In Stock $0.0801/EA EA
#4 7/8 MFSS 40087 In Stock $0.32038/EA EA
#4 1 MFSS 40100 In Stock $0.07369/EA EA
#4 1 1/4 MFSS 40125 In Stock $0.0801/EA EA
#4 1 1/2 MFSS 40150 In Stock $0.12014/EA EA
#6 1/4 MFSS 60025 In Stock $0.04005/EA EA
#6 5/16 MFSS 60031 In Stock $0.04005/EA EA
#6 3/8 MFSS 60037 In Stock $0.04806/EA EA
#6 7/16 MFSS 60043 In Stock $0.0801/EA EA
#6 1/2 MFSS 60050 In Stock $0.04005/EA EA
#6 5/8 MFSS 60062 In Stock $0.0801/EA EA
#6 3/4 MFSS 60075 In Stock $0.05971/EA EA
#6 7/8 MFSS 60087 In Stock $0.28034/EA EA
#6 1 MFSS 60100 In Stock $0.04005/EA EA
#6 1 1/4 MFSS 60125 In Stock $0.12014/EA EA
#6 1 1/2 MFSS 60150 In Stock $0.14626/EA EA
#6 1 3/4 MFSS 60175 In Stock $0.24029/EA EA
#6 2 MFSS 60200 In Stock $0.28682/EA EA
#8 1/4 MFSS 80025 In Stock $0.05066/EA EA
#8 5/16 MFSS 80031 In Stock $0.02803/EA EA
#8 3/8 MFSS 80037 In Stock $0.04005/EA EA
#8 1/2 MFSS 80050 In Stock $0.07008/EA EA
#8 5/8 MFSS 80062 In Stock $0.12014/EA EA
#8 3/4 MFSS 80075 In Stock $0.10473/EA EA
#8 1 MFSS 80100 In Stock $0.0865/EA EA
#8 1 1/4 MFSS 80125 In Stock $0.0817/EA EA
#8 1 1/2 MFSS 80150 In Stock $0.18558/EA EA
#8 1 3/4 MFSS 80175 In Stock $0.23969/EA EA
#8 2 MFSS 80200 In Stock $0.26832/EA EA
#10 1/4 MFSS1020025 In Stock $0.0801/EA EA
#10 1/2 MFSS1020050 In Stock $0.06532/EA EA
#10 3/4 MFSS1020075 In Stock $0.0992/EA EA
#10 7/8 MFSS1020087 In Stock $0.04005/EA EA
#10 1 MFSS1020100 In Stock $0.1318/EA EA
#10 1 1/4 MFSS1020125 In Stock $0.15543/EA EA
#10 1 1/2 MFSS1020150 In Stock $0.37833/EA EA
#10 1 3/4 MFSS1020175 In Stock $0.12014/EA EA
#10 2 MFSS1020200 In Stock $0.42843/EA EA
#10 1/4 MFSS1030025 In Stock $0.15619/EA EA
#10 3/8 MFSS1030037 In Stock $0.12014/EA EA
#10 1/2 MFSS1030050 In Stock $0.09431/EA EA
#10 5/8 MFSS1030062 In Stock $0.16019/EA EA
#10 3/4 MFSS1030075 In Stock $0.12571/EA EA
#10 7/8 MFSS1030087 In Stock $0.32038/EA EA
#10 1 MFSS1030100 In Stock $0.1308/EA EA
#10 1 1/4 MFSS1030125 In Stock $0.10761/EA EA
#10 1 1/2 MFSS1030150 In Stock $0.38714/EA EA
#10 1 3/4 MFSS1030175 In Stock $0.12014/EA EA
#10 2 MFSS1030200 In Stock $0.25667/EA EA
#10 2 1/2 MFSS1030250 In Stock $0.19632/EA EA
#10 3 MFSS1030300 In Stock $1.0012/EA EA
#12 1/2 MFSS1220050 In Stock $0.12587/EA EA
#12 5/8 MFSS1220062 3-5 Working Days $0.0801/EA EA
#12 3/4 MFSS1220075 In Stock $0.22695/EA EA
1/4 3/8 MFSS0250037 In Stock $0.20024/EA EA
1/4 1/2 MFSS0250050 In Stock $0.0817/EA EA
1/4 3/4 MFSS0250075 In Stock $0.12887/EA EA
1/4 7/8 MFSS0250087 In Stock $0.16019/EA EA
1/4 1 MFSS0250100 In Stock $0.14854/EA EA
1/4 1 1/4 MFSS0250125 In Stock $0.23825/EA EA
1/4 1 1/2 MFSS0250150 In Stock $0.30877/EA EA
1/4 1 3/4 MFSS0250175 In Stock $0.34237/EA EA
1/4 2 MFSS0250200 In Stock $0.29804/EA EA
1/4 2 1/2 MFSS0250250 3-5 Working Days $0.48538/EA EA
1/4 3 MFSS0250300 In Stock $0.63468/EA EA
5/16 3/4 MFSS0310075 In Stock $0.33524/EA EA
5/16 1 MFSS0310100 In Stock $0.54197/EA EA
5/16 1 1/4 MFSS0310125 In Stock $0.4704/EA EA
5/16 1 1/2 MFSS0310150 In Stock $0.65046/EA EA
5/16 1 3/4 MFSS0310175 In Stock $0.83861/EA EA
5/16 2 MFSS0310200 In Stock $0.75691/EA EA
5/16 3 MFSS0310300 In Stock $1.09131/EA EA
5/16 5 MFSS0310500 In Stock $8.81057/EA EA
3/8 3/4 MFSS0370075 In Stock $0.59195/EA EA
3/8 1 MFSS0370100 In Stock $0.57281/EA EA
3/8 1 1/4 MFSS0370125 In Stock $1.26904/EA EA
3/8 1 1/2 MFSS0370150 In Stock $0.88106/EA EA
3/8 1 3/4 MFSS0370175 In Stock $0.76091/EA EA
3/8 2 MFSS0370200 In Stock $1.02855/EA EA
3/8 3 MFSS0370300 3-5 Working Days $0.80096/EA EA
3/8 4 MFSS0370400 3-5 Working Days $0.80096/EA EA
1/2 3/4 MFSS0500075 In Stock $1.60192/EA EA
1/2 1 MFSS0500100 3-5 Working Days $1.33761/EA EA
1/2 1 1/2 MFSS0500150 In Stock $1.48018/EA EA
1/2 2 MFSS0500200 In Stock $1.89227/EA EA
1/2 2 1/2 MFSS0500250 In Stock $1.57497/EA EA
1/2 3 MFSS0500300 In Stock $1.92231/EA EA
1/2 4 MFSS0500400 In Stock $4.70897/EA EA