| 選擇規(guī)格尺寸 點擊↓ 2# 3# 4# 5# 6# 8# 10# 12# 1/4 5/16 3/8 | 尺寸單位:
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| ①,ds應(yīng)不小于2A級螺紋最小中徑,并不大于公稱(基本)螺紋大徑。 ②,機械螺釘?shù)穆菁y長度: 1)螺紋規(guī)格≤5#: 公稱長度≤3倍公稱直徑的應(yīng)為滿扣產(chǎn)品,頭下螺紋肩距≤1倍螺距。 公稱長度>3倍公稱直徑到 1-1/8 in 的,允許頭下肩距最大不超過2倍螺距。 若無其他規(guī)定,長螺釘?shù)淖钚÷菁y長度為1 in 。 2)螺紋規(guī)格≥6#: 公稱長度≤3倍公稱直徑的應(yīng)為滿扣產(chǎn)品,頭下螺紋肩距≤1倍螺距。 公稱長度>3倍公稱直徑到 2 in 的,允許頭下螺紋肩距最大不超過2倍螺距。 若無其他規(guī)定,長螺釘?shù)淖钚÷菁y長度為 1.5 in 。 | 
| 1 | ![AB型和ABR型自攻螺紋和末端 [Table 40]](http://img.164580.com/upload/48/standard/2018/09/28/1538121933855296516.jpg)  | [美標] ASME/ANSI B 18.6.3 (T40) - 2013 | AB型和ABR型自攻螺紋和末端 [Table 40] Dimensions of Threads and Points for Type AB and Type ABR Thread-forming Screws | 
| 2 | ![B型 BP型自攻螺釘螺紋和末端 [Table 41]](http://img.164580.com/upload/48/standard/2018/09/29/1538186661945324758.jpg)  | [美標] ASME/ANSI B 18.6.3 (T41) - 2013 | B型 BP型自攻螺釘螺紋和末端 [Table 41] Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws | 
| 3 | ![A型自攻螺釘螺紋和末端 [Table 42]](http://img.164580.com/upload/48/standard/2018/09/29/1538199242541614227.jpg)  | [美標] ASME/ANSI B 18.6.3 (T42) - 2013 | A型自攻螺釘螺紋和末端 [Table 42] Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws | 
| 4 | ![BF型 BT型 自切自攻螺釘螺紋和末端 [Table 43]](http://img.164580.com/upload/48/standard/2018/09/29/1538208543197073992.jpg)  | [美標] ASME/ANSI B 18.6.3 (T43) - 2013 | BF型 BT型 自切自攻螺釘螺紋和末端 [Table 43] Dimensions of Threads and Points for Types BF and BT Thread-Cutting Tapping Screws | 
| 5 | ![D, F, G, T 型自攻螺釘 螺紋和末端 [Table 44]](http://img.164580.com/upload/48/standard/2018/09/30/1538274982710145766.jpg)  | [美標] ASME/ANSI B 18.6.3 (T44) - 2013 | D, F, G, T 型自攻螺釘 螺紋和末端 [Table 44] Dimensions of Threads and Points for Type D, F, G, and T Thread-Cutting Tapping Screws | 
| 6 | ![自擠自攻 TRS型 螺紋和末端 [Table 45]](http://img.164580.com/upload/48/standard/2018/10/08/1538974825207969765.jpg)  | [美標] ASME/ANSI B 18.6.3 (T45) - 2013 | 自擠自攻 TRS型 螺紋和末端 [Table 45] Dimensions of Type TRS Tapping Screws | 
類似標準及供貨信息
| 7 |   | [美標] ASME/ANSI B 18.6.3 - 2010 | 四方槽盤頭螺釘Table19 Square Recessed Pan Head Machine Screws, Type III | 
| 8 |   | [美標] ASME/ANSI B 18.6.7M - 1998 | 米制四方槽盤頭螺釘Table13 Metric Square Slot Pan Screws | 
| 9 | ![四方槽盤頭螺釘 (ASTM F837, F468) [TABLE 2.2.5-3 III]](http://img.164580.com/upload/48/pic/2023/12/15/1702602736195101524.jpg)  | [美標] ASME B 18.6.3 (H5C-III) - 2024 | 四方槽盤頭螺釘 (ASTM F837, F468) [TABLE 2.2.5-3 III] Square Recessed Pan Head Screws, Type III (ASTM F837, F468) [TABLE 2.2.5-3 III] |