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開槽沉頭螺釘Table4 BS 1981 - 1991

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選擇規格尺寸點擊↓

(1#)

(3#)

10#

(12#)

1/4

5/16

3/8

7/16

1/2

5/8

3/4

括號內尺寸為非優選

尺寸單位: inch

英標BS 1981 - 1991 BS1981 1981BS 開槽沉頭螺釘Table4

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單重計算公差美制螺紋極限尺寸米/英制螺紋對照螺紋直徑與受力截面積最小破壞扭矩牌號等級

螺紋尺寸
d

(1#)

(3#)

10#

d_k	最大值
	最小值
k
n	最大值
	最小值
t	最大值
	最小值

0.119	0.146	0.172	0.199	0.225	0.252	0.279	0.332	0.385
0.099	0.123	0.147	0.171	0.195	0.22	0.244	0.292	0.34
0.035	0.043	0.051	0.059	0.067	0.075	0.083	0.1	0.116
0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.054	0.060
0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.045	0.050
0.015	0.019	0.023	0.027	0.03	0.034	0.038	0.045	0.053
0.01	0.012	0.015	0.017	0.02	0.022	0.024	0.029	0.034

螺紋尺寸
d

(12#)

1/4

5/16

3/8

7/16

1/2

5/8

3/4

d_k	最大值
	最小值
k
n	最大值
	最小值
t	最大值
	最小值

0.438	0.507	0.635	0.762	0.812	0.875	1.125	1.375
0.389	0.452	0.568	0.685	0.723	0.775	1.002	1.23
0.132	0.153	0.191	0.23	0.223	0.223	0.298	0.372
0.067	0.075	0.084	0.094	0.094	0.106	0.133	0.149
0.056	0.064	0.072	0.081	0.081	0.091	0.116	0.131
0.06	0.07	0.088	0.106	0.103	0.103	0.137	0.171
0.039	0.046	0.058	0.07	0.066	0.065	0.088	0.111

①,a＜2倍螺距

同版本產品組 (19)

引用參考 (14)

GB /T 3 - 1997

普通螺紋收尾、肩距、退刀槽和倒角 (ISO 3508:1976 / ISO 4755:1983)

GB /T 3098.25 - 2020

緊固件機械性能不銹鋼和鎳合金緊固件選用指南

緊固件 - 螺栓、螺釘和螺柱 - 公稱長度和螺紋長度 (ISO 888:2012, MOD)

GB /T 193 - 2003

普通螺紋（一般用途米制螺紋）- 直徑與螺距系列 (ISO 261: 1998, MOD)

鍍鋅、鍍鎳、鍍鎘、復合鍍等層鍍層鹽霧腐蝕的防護性能

GB /T 5779.1 - 2000

緊固件表面缺陷 - 螺栓、螺釘和螺柱 - 一般要求

GB /T 5779.3 - 2000

緊固件表面缺陷 - 螺栓、螺釘和螺柱 - 特殊要求

螺栓、螺釘和螺柱性能等級及常用牌號及近似牌號（按GB/T3098.1-2010相關規定選擇）非合金鋼和低合金鋼和鑄鋼的硬度值轉換表

注：技術數據僅供參考，請以官方原件為準！

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17	[日標] JIS B 1179 (T1-1) - 1994	開槽沉頭螺栓 (精制) [Table 1-1] Slotted Flat Head Bolts, Fine Finished [Table 1-1]
18	[日標] JIS B 1179 (T1-2) - 1994	開槽沉頭螺栓 (粗制）[Table 1-2] Slotted Flat Head Bolts, Rough Finished [Table 1-2]
19	[美標] ASME/ANSI B 18.6.3 - 2010	80°開槽沉頭螺釘Table1 80° Slotted Flat Countersunk Head Machine Screws
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23	[美標] ASME/ANSI B 18.6.2 (T1) - 1998 (R2010)	開槽沉頭螺釘 [Table 1] (A307, SAE J429, F468, F593) Slotted Flat Countersunk Head Cap Screws [Table 1] (A307, SAE J429, F468, F593)
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25	[美標] ASME/ANSI B 18.11 - 1961 (R1983)	開槽100°沉頭小螺釘 [Table 3] Slotted 100° Flat Head Miniature Screws
26	[意大利] UNI 6109	開槽沉頭螺釘 Slotted Countersunk Flat Head Screws
27	[法國] NF E 25-123 - 1994	開槽沉頭螺釘 Slotted Countersunk Flat Head Screws - Product Grade A
28	[法國] NF F 03-004 (F) - 1983	鐵路車輛沉頭側切口機械螺釘 Railway Rolling Stock Grade A Countersunk Notched Head Machine
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31	[英標] BS 4183 (T2) - 1967	開槽沉頭機械螺釘 Slotted Countersunk Head Machine Screws. Metric Series
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37	[臺灣] CNS 4420 - 1981	開槽沉頭螺栓 Countersunk Head Bolts with Forged Slot for Steel Structures
38	[臺灣] CNS 4363 - 1980	精密用開槽沉頭螺釘 M0.4～M1.4 Slotted Countersunk Head Screws for Fine Mechanics
39	[俄標] GOST 17475 - 1980	開槽沉頭螺釘 A級和B級 Countersunk Head Screws of Accuracy Classes A and B（Slotted）
40	[韓標] KS B 1021 (T5) - 2012 (R2022)	開槽沉頭螺釘 [Table 5] Slotted Countersunk Flat Head Screws [Table 5]
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53	[美標] ASME B 18.6.3 (T5) - 2013	開槽精密100°沉頭機械螺釘 [Table 5] (ASTM F837 / F468) Slotted Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) (ASTM F837 / F468)
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55	[航天] QJ 2370 - 1992	開槽沉頭螺栓 Slotted Countersunk Head Screws
56	[航天] QJ 2373 - 1992	開槽沉頭螺釘 Slotted Countersunk Head Screws
57	[航空] HB 7187~7195 - 1995	100°開槽沉頭螺釘 100° Countersunk Head Bolts
58	[航空] HB 7208~7216 - 1995	100°開槽沉頭螺釘 Slotted 100 Deg Flat Countersunk Head Screws

標準編號 / Standard Code： BS 1981 - 1991
中文名稱 / Chinese Name： 開槽沉頭螺釘Table4
英文名稱 / English Name： Slotted Countersunk Flat Head Screws
數據來源 / Data Source： 易緊通 YJT Fastener Database（164580.com）
中文頁面 / Chinese Page： 查看中文頁面
English Page： View English Page

Data Source: YJT Fastener Database (164580.com)
Standard: BS 1981 - 1991
Chinese Name: 開槽沉頭螺釘Table4
English Name: Slotted Countersunk Flat Head Screws
Chinese URL: Chinese Source Page
English URL: English Source Page
License: Commercial reuse, redistribution, or AI training usage requires authorization.