Ningbo Haitian Fastener Industry Co., LTD.
A professional manufacturer for screws, bolts and nuts.

Screws > Tapping Screws, Din 7981, Din 7982, Din 7983 series
- DIN 7981 Pan / phil. Head Tapping Screw, C1018 or C1022+Harden
- DIN 7982 Flat / phil. Head Tapping Screw, C1018 or C1022+Harden
- DIN 7983 Oval / phil. Head Tapping Screw, C1018 or C1022+Harden
- Finish: ZP, YZ, Or Nickle Plate. Or others

| Item | Metric | Inch | 7981 U.Weight | 7982 U.Weight | 7983 U.Weight |
| 1 | 3.5 x 9.5 | # 6 x 3/8 | 0.79 | 0.54 | 0.72 |
| 2 | 3.5 x 13 | # 6 x 1/2 | 0.97 | 0.72 | 0.9 |
| 3 | 3.5 x 16 | # 6 x 5/8 | 1.12 | 0.87 | 1.05 |
| 4 | 3.5 x 19 | # 6 x 3/4 | 1.27 | 1.02 | 1.2 |
| 5 | 3.5 x 22 | # 6 x 7/8 | 1.42 | 1.17 | 1.35 |
| 6 | 3.5 x 25 | # 6 x 1 | 1.57 | 1.32 | 1.5 |
| 7 | 3.5 x 32 | # 6 x 1-1/4 | 1.91 | 1.66 | 1.75 |
| 8 | 3.5 x 38 | # 6 x 1-1/2 | 2.55 | 1.96 | 2.3 |
| 9 | 3.9 x 9.5 | # 7 x /8 | 1.05 | 0.66 | 0.89 |
| 10 | 3.9 x 13 | # 7 x 1/2 | 1.27 | 0.88 | 1.11 |
| 11 | 3.9 x 16 | # 7 x 5/8 | 1.46 | 1.07 | 1.3 |
| 12 | 3.9 x 19 | # 7 x 3/4 | 1.65 | 1.26 | 1.49 |
| 13 | 3.9 x 22 | # 7 x 7/8 | 1.84 | 1.45 | 1.68 |
| 14 | 3.9 x 25 | # 7 x 1 | 2.03 | 1.64 | 1.87 |
| 15 | 3.9 x 32 | # 7 x 1-1/4 | 2.41 | 2.02 | 2.25 |
| 16 | 4.2 x 9.5 | # 8 x 3/8 | 1.22 | 0.77 | 1.07 |
| 17 | 4.2 x 13 | # 8 x 1/2 | 1.46 | 1.02 | 1.32 |
| 18 | 4.2 x 16 | # 8 x 5/8 | 1.67 | 1.23 | 1.53 |
| 19 | 4.2 x 19 | # 8 x 3/4 | 1.88 | 1.44 | 1.74 |
| 20 | 4.2 x 22 | # 8 x 7/8 | 2.1 | 1.65 | 1.95 |
| 21 | 4.2 x 25 | # 8 x 1 | 2.3 | 1.86 | 2.16 |
| 22 | 4.2 x 32 | # 8 x 1-1/4 | 2.8 | 2.35 | 2.65 |
| 23 | 4.2 x 38 | # 8 x 1-1/2 | 3.3 | 2.84 | 3.15 |
| 24 | 4.8 x 13 | # 10 x 1/2 | 2.2 | 1.45 | 1.88 |
| 25 | 4.8 x 16 | # 10 x 5/8 | 2.5 | 1.75 | 2.18 |
| 26 | 4.8 x 19 | # 10 x 3/4 | 2.8 | 2.05 | 2.48 |
| 27 | 4.8 x 22 | # 10 x 7/8 | 3.1 | 2.35 | 2.78 |
| 28 | 4.8 x 25 | # 10 x 1 | 3.4 | 2.65 | 3.08 |
| 29 | 4.8 x 32 | # 10 x 1-1/4 | 4.1 | 3.35 | 3.78 |
| 30 | 4.8 x 38 | # 10 x 1-1/2 | 4.7 | 4.05 | 4.4 |
| 31 | 4.8 x 45 | # 10 x 1-3/4 | 5.4 | 4.35 | 4.9 |
| 32 | 4.8 x 50 | # 10 x 2 | 6 | 5.45 | 5.4 |
| 33 | 5.5 x 13 | # 12 x 1/2 | 3.2 | 2.11 | 2.64 |
| 34 | 5.5 x 16 | # 12 x 5/8 | 3.6 | 2.49 | 3.12 |
| 35 | 5.5 x 19 | # 12 x 3/4 | 4 | 2.87 | 3.5 |
| 36 | 5.5 x 22 | # 12 x 7/8 | 4.38 | 3.26 | 3.89 |
| 37 | 5.5 x 25 | # 12 x 1 | 4.76 | 3.65 | 4.28 |
| 38 | 5.5 x 32 | # 12 x 1-1/4 | 5.67 | 4.56 | 5.19 |
| 39 | 5.5 x 38 | # 12 x 1-1/2 | 6.45 | 5.43 | 5.97 |
| 40 | 5.5 x 45 | # 12 x 1-3/4 | 7.23 | 6.4 | 6.5 |
| 41 | 5.5 x 50 | # 2 x 2 | 8.01 | 7.17 | 7.2 |