| 選擇規(guī)格尺寸 點(diǎn)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(jí)螺紋最小中徑,并不大于公稱(基本)螺紋大徑。 ②,機(jī)械螺釘?shù)穆菁y長(zhǎng)度: 1)螺紋規(guī)格≤5#: 公稱長(zhǎng)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(zhǎng)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(zhǎng)螺釘?shù)淖钚÷菁y長(zhǎng)度為1 in 。 2)螺紋規(guī)格≥6#: 公稱長(zhǎng)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(zhǎng)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(zhǎng)螺釘?shù)淖钚÷菁y長(zhǎng)度為 1.5 in 。 ③,表中“R”表示為正常插入深度。 ④,方槽內(nèi)壁略帶斜度。這個(gè)斜度會(huì)導(dǎo)致因鍍層在槽內(nèi)的積聚而導(dǎo)致成品緊固件的插入深度測(cè)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(yīng)注意,在生產(chǎn)過程中應(yīng)為其留出必要的加工余量。 | 
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(biāo)稱螺釘尺寸的長(zhǎng)度公差 | |||
| 標(biāo)稱螺釘長(zhǎng)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 | 
類似標(biāo)準(zhǔn)及供貨信息
| 1 |   | [美標(biāo)] ASME/ANSI B 18.6.3 - 2010 | 四方槽盤頭螺釘Table19 Square Recessed Pan Head Machine Screws, Type III | 
| 2 |   | [美標(biāo)] ASME/ANSI B 18.6.7M - 1998 | 米制四方槽盤頭螺釘Table13 Metric Square Slot Pan Screws | 
| 3 | ![四方槽盤頭螺釘 [Table 19] (ASTM F837, F468)](http://img.164580.com/upload/48/pic/2023/12/15/1702602736195101524.jpg)  | [美標(biāo)] ASME B 18.6.3 (T19-III) - 2013 | 四方槽盤頭螺釘 [Table 19] (ASTM F837, F468) Square Recessed Pan Head Screws, Type III [Table 19] (ASTM F837, F468) |