순 번 (A×B×C×D) 경도 재 질 비 고 HRc HV 1 3.65 × 11 × 0.70 43-48   SK-5 볼트용 2 3.65 × 9 × 0.70 43-48   SK-5 볼트용 3 3.70 × 10 × 0.50 43-48   SK-5 볼트용 4 3.70 × 9 × 0.70 43-48   SK-5 볼트용 5 4.10 × 8 × 0.60 43-48   SK-5 볼트용 6 4.20 × 12 × 1.00 40-44   SK-5 볼트용 7 4.50 × 11 × 1.00 40-44   SK-5 볼트용 8 4.50 × 11 × 1.20 40-44   SK-5 볼트용 9 4.50 × 12 × 1.00 40-44   SK-5 볼트용 10 4.60 × 11 × 0.80   430-480 SK-5 볼트용 11 4.60 × 11 × 1.20   430-480 SK-5 볼트용 12 4.60 × 14 × 1.40 43-48   SK-5 볼트용 13 4.70 × 14 × 1.40 43-48   SK-5 볼트용 14 4.70 × 12 × 1.00 43-48   SK-5 볼트용 15 5.4(5.6) × 17 × 2.00 33-43   S50C 볼트용 16 5.60 × 17 × 1.80   360-430 S50C 볼트용 17 5.60 × 14 × 1.70 42-45   S50C 볼트용 18 6.10 × 12 × 0.80 43-48   SK-5 볼트용 19 6.10 × 14 × 0.80 44-52   SK-5 볼트용 20 6.50 × 14 × 1.70 42-45   S50C 볼트용 21 7.40 × 16 × 1.90 43-51   SK-5 볼트용 22 7.50 × 16 × 1.90 43-51   SK-5 볼트용 23 7.40 × 17 × 2.00 43-48   SK-5 볼트용 24 7.50 × 17 × 2.00 37-43   S50C 볼트용 25 7.50 × 18 × 1.20 43-48   SK-5 볼트용 26 7.50 × 18 × 1.60 43-48   SK-5 볼트용 27 7.50 × 22 × 1.80 40-48   S50C 볼트용 28 7.50 × 22 × 2.40 37-43   S50C 볼트용 29 7.50 × 24 × 2.50 34-43   S50C 볼트용 30 8.1(8.0) × 16 × 0.80 43-48   SK-5 볼트용 31 8.1(8.0) × 16 × 1.00 46-50   SK-5 볼트용 32 10.1 × 20 × 0.70 43-48   SK-5 볼트용 33 10.1 × 20 × 1.00 43-48   SK-5 볼트용 34 12.5 × 25 × 0.70 43-48   SK-5 볼트용 35 9.50 × 28 × 3.00 37-43 12.09.21 S50C 볼트용 36 7.50 × 24 × 2.30   360-430 S50C 볼트용 37 8.10 × 14 × 0.90   360-430 S55C 너트용(단조) 38 8.10 × 18 × 0.80 40-48   S55C 너트용(단조) 39 10.6 × 18 × 1.50 40-48   S50C 너트용(단조) 40 8.20 × 19 × 2.00   360-430 SAE1050-1075 너트용(단조) 41 12.2 × 20 × 2.80   360-430 S50C 너트용(단조)