開槽扁圓頭螺釘 (ASTM F837, F468) ASME B 18.6.3 (H7A) - 2024
| 選擇規格尺寸 點擊↓ 0000# 000# 00# 0# 1# 2# 3# 4# 5# 6# 8# 10# 12# 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 |
尺寸單位:
inch |
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| ①,ds應不小于2A級螺紋最小中徑，并不大于公稱（基本）螺紋大徑。 ②,機械螺釘的螺紋長度： 1）螺紋規格≤5#: 公稱長度≤3倍公稱直徑的應為滿扣產品，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。 若無其他規定，長螺釘的最小螺紋長度為1 in 。 2）螺紋規格≥6#: 公稱長度≤3倍公稱直徑的應為滿扣產品，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。 若無其他規定，長螺釘最小螺紋長度為 1.5 in 。 |
長度公差
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.
标稱螺釘尺寸的長度公差 | |||
标稱螺釘長度 | 螺紋規格 | ||
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 |
類似标準及供貨信息
| 1 |
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[國标] GB 947 - 1988 |
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| 2 |
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[日标] JIS B 1101 (JA6) - 2017 |
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| 3 |
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[日标] JIS B 1101 (AAT4) - 1996 |
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| 4 |
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[日标] JIS B 1119 (1R) - 1986 |
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| 5 |
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[美标] ASME/ANSI B 18.6.3 - 2010 |
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| 6 |
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[法國] NF F 03-005 (CR) - 1983 |
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| 7 |
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[英标] BS 450 - 1958 |
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| 8 |
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[澳标] AS /NZS 1427 - 1996 |
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| 9 |
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[台灣] CNS 9672 - 1988 |
有槽蕈形頭小螺釘 Slotted Mushroom Head Machine Screws |
| 10 |
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[軍标] GJB 3371 (/45~/47) - 1998 |
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| 11 |
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[軍标] GJB 3371 (/66) - 1998 |
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| 12 |
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[軍标] GJB 3372 (/32~/35) - 1998 |
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| 13 |
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[美标] ASME B 18.6.3 (T24) - 2013 |
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| 14 |
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[航天] QJ 2387 - 1992 |
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