Whitworth Threads (BSW) Unit: mm Helical Coil Wire Thread Inserts Metric Coarse (EG STI M) Unit: mm

SP

SizeMinor D Max.iameter Min.Drill SizeRecommended Hole Size
BSW1/16 -601.231.1071.151.20
BSW3/32 -481.9141.7851.851.88
BSW1/8 -402.5912.4562.552.56
BSW5/32 -323.2143.0713.153.20
BSW3/16 -243.7453.5633.703.70
BSW7/32 -244.544.3584.504.49
BSW1/4 -205.2044.9145.105.13
BSW5/16 -186.676.346.506.59
BSW3/8 -168.1137.7338.008.02
BSW7/16 -149.5089.0489.309.39
BSW1/2 -1210.8310.3110.6010.70
BSW9/16 -1212.41811.89812.2512.29
BSW5/8 -1113.81713.25713.5013.68
BSW3/4 -1016.77816.17816.5016.63
BSW7/8 -919.69119.03119.5019.53
BSW1 -822.51421.81422.2022.34
BSW1 1/8 -725.22924.46924.7525.04
BSW1 1/4 -728.40427.64428.0028.21
BSW1 3/8 -630.92330.12330.5030.72
BSW1 1/2 -634.09833.29833.7533.90
BSW1 5/8 -536.40935.52936.0036.19
BSW1 3/4 -539.58438.70439.2039.36
BSW1 7/8 -4 1/242.22741.23742.0041.98
BSW2 -4.545.40244.41245.0045.15
BSW2 1/4 -451.06849.95850.5050.79
BSW2 1/2 -457.41856.30857.0057.14
BSW2 3/4 -3 1/262.81661.63662.5062.52
BSW3 -3 1/269.16667.98668.5068.87
BSW3 1/4 -3 1/474.90273.70274.5074.60
BSW3 1/2 -3 1/481.25280.05281.0081.10
BSW3 3/4 -386.90885.66886.5086.60
BSW4 -393.25892.01892.8092.95
SizeMinor D Max.iameter Min.Drill SizeRecommended Hole Size
EG(STI)M2×0.42.162.102.132.15
EG(STI)M2.5×0.452.682.602.602.66
EG(STI)M2.6×0.452.782.702.702.76
EG(STI)M3×0.53.203.123.153.18
EG(STI)M4×0.74.304.174.204.27
EG(STI)M5×0.85.335.165.205.29
EG(STI)M6×16.426.256.306.38
EG(STI)M8×1.258.528.318.408.47
EG(STI)M10×1.510.6210.3710.5010.56
EG(STI)M12×1.7512.7312.4312.6012.66
EG(STI)M14×214.8314.4914.7014.75
EG(STI)M16×216.8316.4916.7016.75
EG(STI)M18×2.519.0418.5818.9018.93
EG(STI)M20×2.521.0420.5820.9020.93
EG(STI)M22×2.523.0422.5822.9022.93
EG(STI)M24×325.2524.7025.1025.11

ROLL

SizeMinor Di Max.ameter Min.Drill SizeRecommended Hole Size
EG(STI)MF10×1.2510.5210.3110.4010.47
EG(STI)MF10×110.4210.2510.3010.38
EG(STI)MF12×1.512.6212.3712.5012.56
EG(STI)MF12×1.2512.5212.3112.4012.47
EG(STI)MF14×1.514.6214.3714.5014.56
EG(STI)MF14×1.2514.5214.3114.4014.47
EG(STI)MF16×1.516.6216.3716.5016.56
EG(STI)MF18×1.518.6218.3718.5018.56
EG(STI)MF20×1.520.6220.3720.5020.56
EG(STI)MF22×1.522.6222.3722.5022.56
EG(STI)MF24×1.524.6224.3724.5024.56

EG (STI)

SPECIAL

THREADS,

GAUGES Helical Coil Wire Thread Inserts Unified Coarse (EG STI UNC) Unit: mm Helical Coil Wire Thread Inserts Unified Fine (EG STI UNF) Unit: mm

SizeMinor Di Max.ameter Min.Drill SizeRecommended Hole Size
EG(STI)No.2-56UNC2.4402.2842.352.4
EG(STI)No.4-40UNC3.1802.9853.103.13
EG(STI)No.5-40UNC3.4873.3153.403.44
EG(STI)No.6-32UNC3.8783.6783.803.83
EG(STI)No.8-32UNC4.5234.3394.404.48
EG(STI)No.10-24UNC5.2835.0555.205.23
EG(STI)No.12-24UNC5.9435.7155.805.89
EG(STI)1/4-20UNC6.8686.6256.806.81
EG(STI)5/16-18UNC8.4888.2438.408.43
EG(STI)3/8-16UNC10.1269.86810.0010.06
EG(STI)7/16-14UNC11.78311.50711.7011.71
EG(STI)1/2-13UNC13.39313.12213.2013.33
EG(STI)5/8-11UNC16.67216.37616.5016.60
SizeMinor Di Max.ameter Min.Drill SizeRecommended Hole Size
EG(STI)No.4- 48UNF3.1212.9623.003.08
EG(STI)No.6- 40UNF3.8173.6453.703.77
EG(STI)No.8- 36UNF4.4984.3214.404.45
EG(STI)No.10- 32UNF5.1844.9995.105.14
EG(STI)1/4- 28UNF6.7206.5466.606.68
EG(STI)5/16- 24UNF8.3518.1678.308.31
EG(STI)3/8- 24UNF9.9319.7549.809.89
EG(STI)7/16- 20UNF11.58411.38711.5011.53
EG(STI)1/2- 20UNF13.17212.97513.1013.12
EG(STI)5/8- 18UNF16.38516.18016.3016.33
EG(STI)3/4- 16UNF19.60819.39319.5019.55

info EG(STI) 5/8 - 11 UNC 16.672 16.376 16.50 16.60