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COUNTERSINK STANDARD USAGE
Flat Head
Screw
Size
C'Sink
Size
 CLEARANCE
Screw Dia Dia Height Socket Size C'Sink Dia Close Free
0.086
0.168
0.064
0.050
#2
3/16
0.214
3/32
0.094
#36
0.106
0.112
0.218
0.083
1/16
#4
1/4
0.272
1/8
0.125
#29
0.136
0.138
0.263
0.097
5/64
#6
5/16
0.324
#23
0.154
#18
0.170
0.164
0.311
0.112
3/32
#8
3/8
0.376
#15
0.180
# 9
0.196
0.190
0.359
0.127
1/8
#10
3/8
0.428
#5
0.206
# 2
0.221
0.250
0.480
0.161
5/32
1/4
1/2
0.548
17/64
0.266
9/32
0.281
0.313
0.600
0.198
3/16
5/16
5/8
0.673
21/64
0.328
11/32
0.344
0.375
0.720
0.234
7/32
3/8
3/4
0.798
25/64
0.391
13/32
0.406
0.438
0.781
0.234
1/4
7/16
7/8
0.861
29/64
0.453
15/32
0.469
0.500
0.872
0.251
5/16
1/2
1
0.955
33/64
0.516
17/32
0.531
0.625
1.112
0.324
3/8
5/8
1-1/4
1.205
41/64
0.641
21/32
0.656
0.750
1.355
0.396
1/2
3/4
1-1/2
1.455
49/64
0.766
25/32
0.781
0.875
1.604
0.468
9/16
7/8
1-3/4
1.705
57/64
0.891
29/32
0.906
1.000
1.841
0.540
5/8
1
2
1.955
1-1/64
1.016
1-1/32
1.031
Countersink diameters are based on the theoretical maximum head diameter at a depth of .005 to .015 and an angle of 82˚
Actual depth may vary depending on actual head diameter and angle. Countersink diameter tolerances are +/- .010
Countersink angle tolerances are +/- 2˚ Free should be used unless close is required
Monster Tool - Burr Monster - SA, SB, SC, SD, SE, SF, SG, SH, SJ, SK, SL, SM, SN Shapes and Mold, Tool and Die Making Carbide Burrs and Burr Sets. Single Cut, Double Cut and Aluma. All solid carbide, C-2 Grade Monster Tool - Drill Monster - Solid Carbide Twist Drills - Jobber Length, Spade Drills, Straight Flute Drill, Stub Drills and Center Drills. TiAlN / TiN Coating available Monster Tool - Mega Monster - High Performance End Mills and Rougher tools. Made from solid premium Micrograin C-2 Solid Carbide Monster Tool - Metal Monster - Solid Carbide Unground Blanks (1000 and 2000 series), STB Strips, Rod, Split End Blanks Monster Tool - Micro Monster - Miniature Decimal Endmills. 2 flute, 4 Flute, Square and Ball nose Regular and Stub lengths Monster Tool - Mill Monster - 2 Flute, 3 Flute Square and Ball nose, Stub, regular, long, extended lengths. Single end, double end, Corner Radius - 30 degrees helix, Right hand spiral, Right Hand Cutting Monster Tool - Ream Monster - Carbide Reamers in fractional, decimal, wire, letter and metric sizes Monster Tool - Tool Monster - HSS and Carbide Countersinks. Single Flute, 3 Flute, 6 Flute. In 60, 82, 90, 100 and 120 degree angles. Countersink sets available in a wooden case
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