|Table of Contents |Section Contents|
Size Ranges: ------------ Class 0 - 0.12 0.12 - 0.24 0.24 - 0.40 0.40 - 0.56 0.56 - 0.71 ----- ------------ ------------ ------------ ------------ -------------- FN1 Hole +0.25 -0.0 +0.3 -0.0 +0.4 -0.0 +0.4 -0.0 +0.4 -0.0 FN1 Shaft +0.5 +0.3 +0.6 +0.4 +0.75 +0.5 +0.8 +0.5 +0.9 +0.6 FN2 Hole +0.4 -0.0 +0.5 -0.0 +0.6 -0.0 +0.7 -0.0 +0.7 -0.0 FN2 Shaft +0.85 +0.6 +1.0 +0.7 +1.4 +1.0 +1.6 +1.2 +1.6 +1.2 FN3 Hole FN3 Shaft FN4 Hole +0.4 -0.0 +0.5 -0.0 +0.6 -0.0 +0.7 -0.0 +0.7 -0.0 FN4 Shaft +0.95 +0.7 +1.2 +0.9 +1.6 +1.2 +1.8 +1.4 +1.8 +1.4 FN5 Hole +0.6 -0.0 +0.7 -0.0 +0.9 -0.0 +1.0 -0.0 +1.0 -0.0 FN5 Shaft +1.3 +0.9 +1.7 +1.2 +2.0 +1.4 +2.3 +1.6 +2.5 +1.8 Class 0.71 - 0.95 0.95 - 1.19 1.19 - 1.58 1.58 - 1.97 1.97 - 2.56 ----- ----------- ----------- ------------ ----------- ----------- FN1 Hole +0.5 -0.0 +0.5 -0.0 +0.6 -0.0 +0.6 -0.0 +0.7 -0.0 FN1 Shaft +1.1 +0.7 +1.2 +0.8 +1.3 +0.9 +1.4 +1.0 +1.8 +1.3 FN2 Hole +0.8 -0.0 +0.8 -0.0 +1.0 -0.0 +1.0 -0.0 +1.2 -0.0 FN2 Shaft +1.9 +1.4 +1.9 +1.4 +2.4 +1.8 +2.4 +1.8 +2.7 +2.0 FN3 Hole +0.8 -0.0 +1.0 -0.0 +1.0 -0.0 +1.2 -0.0 FN3 Shaft +2.1 +1.6 +2.6 +2.0 +2.8 +2.2 +3.2 +2.5 FN4 Hole +0.8 -0.0 +0.8 -0.0 +1.0 -0.0 +1.0 -0.0 +1.2 -0.0 FN4 Shaft +2.1 +1.6 +2.3 +1.8 +3.1 +2.5 +3.4 +2.8 +4.2 +3.5 FN5 Hole +1.2 -0.0 +1.2 -0.0 +1.6 -0.0 +1.6 -0.0 +1.8 -0.0 FN5 Shaft +3.0 +2.2 +3.3 +2.5 +4.0 +3.0 +5.0 +4.0 +6.2 +5.0 Class 2.56 - 3.15 3.15 - 3.94 3.94 - 4.73 4.73 - 5.52 5.52 - 6.30 ----- ----------- ----------- ------------ ----------- ----------- FN1 Hole +0.7 -0.0 +0.9 -0.0 +0.9 -0.0 +1.0 -0.0 +1.0 -0.0 FN1 Shaft +1.9 +1.4 +2.4 +1.8 +2.6 +2.0 +2.9 +2.2 +3.2 +2.5 FN2 Hole +1.2 -0.0 +1.4 -0.0 +1.4 -0.0 +1.6 -0.0 +1.6 -0.0 FN2 Shaft +2.9 +2.2 +3.7 +2.8 +3.9 +3.0 +4.5 +3.5 +5.0 +4.0 FN3 Hole +1.2 -0.0 +1.4 -0.0 +1.4 -0.0 +1.6 -0.0 +1.6 -0.0 FN3 Shaft +3.7 +3.0 +4.4 +3.5 +4.9 +4.0 +6.0 +5.0 +6.0 +5.0 FN4 Hole +1.2 -0.0 +1.4 -0.0 +1.4 -0.0 +1.6 -0.0 +1.6 -0.0 FN4 Shaft +4.7 +4.0 +5.9 +5.0 +6.9 +6.0 +8.0 +7.0 +8.0 +7.0 FN5 Hole +1.8 -0.0 +2.2 -0.0 +2.2 -0.0 +2.5 -0.0 +2.5 -0.0 FN5 Shaft +7.2 +6.0 +8.4 +7.0 +9.4 +8.0 +11.6 +10.0 +13.6 +12.0 Class 6.30 - 7.09 ----- ----------- FN1 Hole +1.0 -0.0 FN1 Shaft +3.5 +2.8 FN2 Hole +1.6 -0.0 FN2 Shaft +5.5 +4.5 FN3 Hole +1.6 -0.0 FN3 Shaft +7.0 +6.0 FN4 Hole +1.6 -0.0 FN4 Shaft +9.0 +8.0 FN5 Hole +2.5 -0.0 FN5 Shaft +13.6 +12.0