12 外舌止动垫圈GB/T 856—1988标准
外舌止动垫圈GB856—1988标准
外舌止动垫圈的尺寸规格见表4.5-34、表4.5-35。
表4.5-34 外舌止动垫圈的尺寸规格 （mm)
| 规格（螺纹大径） | d min | D max | b max | L 公称 | S | d1 | t |
| 2.5 | 2.7 | 10 | 2 | 3.5 | 0.4 | 2.5 | 3 |
| 3 | 3.2 | 12 | 2.5 | 4.5 | 3 | ||
| 4 | 4.2 | 14 | 2.5 | 5.5 | |||
| 5 | 5.3 | 17 | 3.5 | 7 | 0.5 | 4 | 4 |
| 6 | 6.4 | 19 | 3.5 | 7.5 | |||
| 8 | 8.4 | 22 | 3.5 | 8.5 | |||
| 10 | 10.5 | 26 | 4.5 | 10 | 5 | 5 | |
| 12 | 13 | 32 | 4.5 | 12 | 1 | 6 | |
| (14) | 15 | 32 | 4.5 | 12 | |||
| 16 | 17 | 40 | 5.5 | 15 | 6 | ||
| (18) | 19 | 45 | 6 | 18 | 7 | 7 | |
| 20 | 21 | 45 | 6 | 18 | |||
| (22) | 23 | 50 | 7 | 20 | 8 | ||
| 24 | 25 | 50 | 7 | 20 | 1.5 | ||
| (27) | 28 | 58 | 8 | 23 | 9 | 10 | |
| 30 | 31 | 63 | 8 | 25 | |||
| 36 | 37 | 75 | 11 | 31 | 12 | ||
| 42 | 43 | 88 | 11 | 36 | 12 | ||
| 48 | 50 | 100 | 13 | 40 | 14 | 13 |
注：应尽可能不采用括号内的规格。
表4.5-35 外舌止动垫圈的质量（kg)
每1000件钢制品的大约质量
| 规格/mm | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | (14) | 16 | (18) | 20 | (22) | 24 | (27) | 30 | 36 | 42 | 48 |
| 质量 | 0.21 | 0.3 | 0.41 | 0.75 | 0.92 | 1.2 | 1.65 | 5 | 4.65 | 7.73 | 9.85 | 9.36 | 11.7 | 11.11 | 22.92 | 26.79 | 38.09 | 52.77 | 67.33 |