Slotted Round Head Machine Screw, Plated
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Slotted Round Head Machine Screw, Plated

Machine screws are uniformly threaded fasteners with a blunt end that are used with a threaded nut or threadedinto a tapped hole. The round head offers a smooth, rounded head design with a slotted drive. These fasteners are available in a zinc plated finish.

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
Tensile Strength, a
lb., min. (STEEL
screws only)
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 360
#4 48 0.0007 0.1113 0.1068 0.0978 0.0954 0.002361 0.00661 396
#5 40 0.0008 0.1242 0.1191 0.1080 0.1054 0.002562 0.00796 470
#5 44 0.0007 0.1243 0.1195 0.1095 0.1070 0.002484 0.00830 498
#6 32 0.0008 0.1372 0.1312 0.1169 0.1141 0.002820 0.00909 550
#6 40 0.0008 0.1372 0.1321 0.1210 0.1184 0.002614 0.01015 609
#8 32 0.0009 0.1631 0.1571 0.1428 0.1399 0.002916 0.01400 850
#8 36 0.0008 0.1632 0.1577 0.1452 0.1424 0.002804 0.01474 884
#10 24 0.0010 0.1890 0.1818 0.1619 0.1586 0.003319 0.01750 1050
#10 32 0.0009 0.1891 0.1831 0.1688 0.1658 0.003004 0.02000 1200
#12 24 0.0010 0.2150 0.2078 0.1879 0.1845 0.003400 0.02420 1450
#12 28 0.0010 0.2150 0.2085 0.1918 0.1886 0.003224 0.02580 1548
1/4 20 0.0011 0.2489 0.2408 0.2164 0.2127 0.003731 0.03180 1900
1/4 28 0.0010 0.2490 0.2425 0.2258 0.2225 0.003322 0.03640 2200
5/16 18 0.0012 0.3113 0.3026 0.2752 0.2712 0.004041 0.05240 3150
5/16 24 0.0011 0.3114 0.3042 0.2843 0.2806 0.003660 0.05800 3480
3/8 16 0.0013 0.3737 0.3643 0.3331 0.3287 0.004363 0.07750 4650
3/8 24 0.0011 0.3739 0.3667 0.3468 0.3430 0.003804 0.08780 5268
1/2 13 0.0015 0.4985 0.4876 0.4485 0.4435 0.004965 0.14190 8500
1/2 20 0.0013 0.4987 0.4906 0.4662 0.4619 0.004288 0.15990 9594
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. a Tensile strength values are based on 60,000 psi and apply to carbon steel screws and SEMS only. Hex and Hex Washer head machine screws of sufficient length may be wedge tensile tested. Other head styles may be axial tensile tested.
  2. All dimensions are in inches.

Dimensional SpecificationsSlotted Round Head for Machine Screws

Slotted Round Head for Machine Screws dimensions
ASME B18.6.3-2013
Nominal
Size
A H J T M G N Phillips
Drive
Size
Head Dimensions Slot Dimensions Phillips Dimensions
Diameter Height Width Depth Diameter Depth Width
Max Min Max Min Max Min Max Min Max Min Max Min
#2 0.162 0.146 0.069 0.059 0.031 0.023 0.048 0.037 0.100 0.087 0.053 0.017 1
#3 0.187 0.169 0.078 0.067 0.035 0.027 0.053 0.040 0.109 0.096 0.062 0.018 1
#4 0.211 0.193 0.086 0.075 0.039 0.031 0.058 0.044 0.118 0.105 0.072 0.019 1
#5 0.236 0.217 0.095 0.083 0.043 0.035 0.063 0.047 0.154 0.141 0.074 0.027 2
#6 0.260 0.240 0.103 0.091 0.048 0.039 0.068 0.051 0.162 0.149 0.084 0.027 2
#8 0.309 0.287 0.120 0.107 0.054 0.045 0.077 0.058 0.178 0.165 0.101 0.030 2
#10 0.359 0.334 0.137 0.123 0.060 0.050 0.087 0.065 0.195 0.182 0.119 0.031 2
#12 0.408 0.382 0.153 0.139 0.067 0.056 0.096 0.073 0.249 0.236 0.125 0.032 3
1/4 0.472 0.443 0.175 0.160 0.075 0.064 0.109 0.082 0.268 0.255 0.147 0.034 3
5/16 0.590 0.557 0.216 0.198 0.084 0.072 0.132 0.099 0.308 0.295 0.187 0.040 3
3/8 0.708 0.670 0.256 0.237 0.094 0.081 0.155 0.117 0.387 0.374 0.228 0.064 4
1/2 0.813 0.766 0.355 0.332 0.106 0.091 0.211 0.159 0.416 0.403 0.256 0.068 4
  1. All dimensions are in inches.
Slotted Round Head Machine Screw, Plated
View
Diameter Thread Pitch Length Item # Availability Price Quantity UOM
#6 32 1/4 MRSP 60025 In Stock $0.08219/EA EA
#6 32 1/2 MRSP 60050 3-5 Working Days $0.10879/EA EA
#6 32 3/4 MRSP 60075 3-5 Working Days $0.11686/EA EA
#8 32 1/4 MRSP 80025 3-5 Working Days $0.12542/EA EA
#8 32 1/2 MRSP 80050 3-5 Working Days $0.13207/EA EA
#8 32 3/4 MRSP 80075 3-5 Working Days $0.13254/EA EA
#8 32 1 MRSP 80100 3-5 Working Days $0.15107/EA EA
#10 24 1/2 MRSP1020050 In Stock $0.10926/EA EA
#10 24 3/4 MRSP1020075 3-5 Working Days $0.14822/EA EA
#10 24 1 MRSP1020100 In Stock $0.12637/EA EA
#10 24 1 1/2 MRSP1020150 In Stock $0.15392/EA EA
#10 32 1/4 MRSP1030025 3-5 Working Days $0.01857/EA EA
#10 32 1/2 MRSP1030050 In Stock $0.11083/EA EA
#10 32 3/4 MRSP1030075 3-5 Working Days $0.15914/EA EA
#10 32 1 MRSP1030100 3-5 Working Days $0.16722/EA EA
#10 32 1 1/2 MRSP1030150 3-5 Working Days $0.2342/EA EA
#12 24 1/2 MRSP1220050 In Stock $0.25211/EA EA
#12 24 3/4 MRSP1220075 In Stock $0.08613/EA EA
1/4 20 1/2 MRSP0250050 In Stock $0.15677/EA EA
1/4 20 3/4 MRSP0250075 In Stock $0.21249/EA EA
1/4 20 1 MRSP0250100 In Stock $0.22081/EA EA
1/4 20 1 1/4 MRSP0250125 In Stock $0.25321/EA EA
1/4 20 1 1/2 MRSP0250150 In Stock $0.30594/EA EA
1/4 20 2 MRSP0250200 In Stock $0.4114/EA EA
3/8 16 3/4 MRSP0370075 In Stock $0.58432/EA EA
3/8 16 1 MRSP0370100 In Stock $0.60855/EA EA
3/8 16 1 1/2 MRSP0370150 In Stock $0.73112/EA EA
3/8 16 2 MRSP0370200 In Stock $0.92019/EA EA