SS Hex Trim Head Machine Screw
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SS Hex Trim 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 hex trim head is less prone to stripping than some other drive types. These fasteners are available in 18-8 stainless steel material. 

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 SpecificationsHex Trim Head for Machine Screws

Hex Trim Head for Machine Screws dimensions
ASME B18.6.3-2013
Nominal
Size
A W H
Width
Across Flats
Width
Across
Corners
Height
of Head
Max Min Min Max Min
#2 0.125 0.120 0.134 0.050 0.040
#4 0.188 0.188 0.202 0.060 0.049
#5 0.188 0.181 0.202 0.070 0.058
#6 0.250 0.244 0.272 0.093 0.080
#8 0.250 0.244 0.272 0.110 0.096
#10 0.312 0.305 0.340 0.120 0.105
#12 0.312 0.305 0.340 0.155 0.139
1/4 0.375 0.367 0.409 0.190 0.172
5/16 0.500 0.489 0.545 0.230 0.208
3/8 0.562 0.551 0.614 0.295 0.270
1/2 0.750 0.735 0.820 0.400 0.367
  1. All dimensions are in inches.
SS Hex Trim Head Machine Screw
View
Diameter Thread Pitch Length Item # Availability Price Quantity UOM
#10 24 1 3/4 MHHS1020175 In Stock $0.5425/EA EA
#10 32 1 MHHS1030100 In Stock $0.25705/EA EA
#10 32 5/8 MHHS1030062 In Stock $0.11618/EA EA
#8 32 1/2 MHHS8320050 3-5 Working Days $0.12873/EA EA
#8 32 1 1/2 MHHS8320150 In Stock $0.71018/EA EA
#10 24 1 MHHS1020100 In Stock $0.27744/EA EA
#8 32 3/8 MHHS8320037 In Stock $0.1226/EA EA
#10 32 1/4 MHHS1030025 In Stock $0.13637/EA EA
#10 32 1/2 MHHS1030050 In Stock $0.18946/EA EA
#10 32 1 1/4 MHHS1030125 In Stock $0.34123/EA EA
#10 32 2 MHHS1030200 In Stock $0.29052/EA EA
#8 32 3/4 MHHS8320075 In Stock $0.17123/EA EA
#8 32 1 MHHS8320100 In Stock $0.20752/EA EA
#10 24 3/4 MHHS1020075 In Stock $0.10883/EA EA
#10 32 1 1/2 MHHS1030150 In Stock $0.3678/EA EA
#10 32 1 3/4 MHHS1030175 In Stock $0.3678/EA EA
#10 24 1 1/2 MHHS1020150 3-5 Working Days $0.25909/EA EA
#10 24 2 MHHS1020200 In Stock $0.2886/EA EA
#10 24 1 1/4 MHHS1020125 In Stock $0.31671/EA EA
#10 24 1/2 MHHS1020050 In Stock $0.09281/EA EA
#10 32 3/4 MHHS1030075 In Stock $0.20433/EA EA
#8 32 1 1/4 MHHS8320125 In Stock $0.27532/EA EA
#10 32 3/8 MHHS1030037 In Stock $0.11434/EA EA