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| ①,若以小數(shù)規(guī)定公稱直徑,應省略小數(shù)前和小數(shù)點后第四位的零。 ②,方槽內(nèi)壁略帶斜度。這個斜度會導致因鍍層在槽內(nèi)的積聚而導致成品緊固件的插入深度測量受限。表中的凹槽插入尺寸適用于成品(鍍層)產(chǎn)品。制造商應注意,在生產(chǎn)過程中應為其留出必要的加工余量。 ③,表中的“R”表示正常插入深入。 |
Machine screws can be made to any length, but they are generally produced in fractional length increments of 1/16 in. for screws up to 5/8 in. long, 1/8 in. for screws over 5/8 in. through 1-1/2 in. long, and 1/4 in. for screws over 1-1/2 in. long.
標稱螺釘尺寸的長度公差 | |||
標稱螺釘長度 | 螺紋規(guī)格 | ||
0000~00 | 0~12 | 1/4~3/4 | |
≤1/2 | -0.01 | -0.02 | -0.03 |
>1/2,≤1 | -0.02 | -0.03 | -0.03 |
>1,≤2 | / | -0.06 | -0.06 |
>2 | / | -0.09 | -0.09 |
| 1 |
|
[美標] ASME/ANSI B 18.6.7M - 1998 |
米制四方槽半沉頭螺釘Table9
Metric Square Slot Raised Countersunk Head Screws |
| 2 |
|
[美標] ASME B 18.6.3 (H2B-III) - 2024 |
四方槽半沉頭螺釘 III型 [TABLE 2.2.2-2 III]
Square Recessed Raised Countersunk Head Screws - Type III [TABLE 2.2.2-2 III] |
| 3 |
|
[美標] ASME B 18.6.3 (T8-III) - 2013 |
四方槽半沉頭螺釘 III型 [表7&8]
Square Recessed Raised Countersunk Head Screws - Type III [Table 7 & 8] |
| 4 |
|
[美標] ASME B 18.6.3 (T12-III) - 2013 |
方槽82°半沉頭清根螺釘
Undercut Oval 82-deg Countersunk Head Screws, Type III Recess |