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Internal thread cylindrical pin

Internal thread cylindrical pin GB/T 120.1-2000

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Internal thread cylindrical pin GB/T 120.1-2000

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18964326553

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Parameters

d m61)			6	8	10	12	16	20	25	30	40	50
c1 ≈			0.8	1	1.2	1.6	2	2.5	3	4	5	6.3
c2 ≈			1.2	1.6	2	2.5	3	3.5	4	5	6.3	8
d1			M4	M5	M6	M6	M8	M10	M16	M20	M20	M24
P2)			0.7	0.8	1	1	1.25	1.5	2	2.5	2.5	3
d2			4.3	5.3	6.4	6.4	8.4	10.5	17	21	21	25
t1			6	8	10	12	16	18	24	30	30	36
t2 min			10	12	16	20	25	28	35	40	40	50
t3			1	1.2	1.2	1.2	1.5	1.5	2	2	2.5	2.5
l3)
公称	min	max
16	15.5	16.5
18	17.5	18.5
20	19.5	20.5
22	21.5	22.5
24	23.5	24.5
26	25.5	26.5
28	27.5	28.5
30	29.5	30.5
32	31.5	32.5
35	34.5	35.5
40	39.5	40.5			商品
45	44.5	45.5
50	49.5	50.5
55	54.25	55.75
60	59.25	60.75
65	64.25	65.75
70	69.25	70.75				长度
75	74.25	75.75
80	79.25	80.75
85	84.25	85.75
90	89.25	90.75
95	94.25	95.75
100	99.25	100.75						范围
120	119.25	120.75
140	139.25	140.75
160	159.25	160.75
180	179.25	180.75
200	199.25	200.75

技术条件和引用标准

螺纹

6H（GB/T197）

材料1）

钢

奥氏体不锈钢

硬度：125～245HV30

A1（GB/T3098.6）

硬度 210～280HV30

表面粗糙度

Ra≤0.8μm

表面缺陷

不允许有不规则的或有害的缺陷。

销的任何部位不得有毛刺

表面处理

不经处理；

氧化；

镀锌钝化按GB/T5267；

磷化按GB/T11376；

简单处理

其他表面镀层或表面处理，应由供需双方协议。

所有公差仅适用于涂、镀前的公差

验收及包装

GB/T90

1）其他材料由供需双方协议。

5 标记
5.1 标记方法按GB/T1237规定
5.2 标记示例
公称直径d=6 mm、公差为m6、公称长度l=30 mm、材料为钢、不经淬火、不经表面处理的内螺纹圆柱销的标记：销GB/T120.1 6×30
公称直径d=6 mm、公差为m6、公称长度l=30 mm、材料为A1组奥氏体不锈钢、表面简单处理的内螺纹圆柱销的标记：销GB/T120.1 6×30-A1

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