1、小五金手册1. 螺釘定義:由頭部和螺杆兩部分構成的一類緊固件.本手冊中包括的螺釘主要有機械螺釘, 自攻螺釘,塑膠螺釘和浮動螺釘等.機械螺釘由頭部和螺杆兩部分構成的一類金屬緊固件,主要用於一個帶有內螺紋孔的零件與帶有通孔的零件之間的緊固連接,不需要螺母配合;也用於帶有通孔的零件之間的緊固連接,但要與螺母配合, 屬可拆卸連接.自攻螺釘由頭部和螺杆兩部分構成的一類金屬緊固件,但螺杆上的螺紋為專用的自攻螺釘用螺紋用於緊固連接兩個薄的金屬構件,使之成為一體,構件需事先制出小孔,這種螺釘具有較強的硬度,可直接旋入構件的孔中,使構件孔中形成相應的內螺紋.塑膠螺釘由頭部和螺杆兩部分構成的一類金屬緊固件,但螺杆
2、上的螺紋為專用的塑膠螺釘用螺紋,可直旋入塑膠件中,用於把一個帶通孔的金屬(或非金屬)零件與一個塑膠件緊固連接在一起.浮動螺釘壓鉚於衝件預制孔內,用於經常拆裝之衝壓件的把手螺釘,其結構是螺釘本體內包含彈性體.1.1螺紋標誌及尺寸(適用於所有螺釘,螺母和螺柱) H:原始三角形高度 P:螺距 D:內螺紋公稱直徑 d: 外螺紋公稱直徑 H1:螺紋高度. D1:內螺紋小徑 D2:內螺紋中徑 d2:外螺紋中徑 d1:外螺紋小徑 n:為每英吋牙數1.1.1米制細牙螺紋; H=0.866025P d2=d-0.649519P D=d H1=0.541266P d1=d-1.082532P D2=d2 D1=d
3、1單位:MM螺紋標誌PH1d(D)d2(D2)d1(D1)M1*0.20.20.1081.0000.8700.783M1.1*0.20.20.1081.1000.9700.883M1.2*0.20.20.1081.2001.0700.983M1.4*0.20.20.1081.4001.2701.183M1.6*0.20.20.1081.6001.4701.383M1.8*0.20.20.1081.8001.6701.583M2*0.250.250.1352.0001.8381.729M2.2*0.250.250.1352.2002.0381.929M2.5*0.350.350.1892.500
4、2.2732.121M3*0.350.350.1893.0002.7732.621M3.5*0.350.350.1893.5003.2733.121M4*0.50.50.2714.0003.6753.459M4.5*0.50.50.2714.5004.1753.959M5*0.50.50.2715.0004.6754.459M5.5*0.50.50.2715.0005.1754.959M6*0.750.750.4066.0005.5135.1881.1.2米制粗牙螺紋; H=0.866025P d2=d-0.649519P D=d H1=0.541266P d1=d-1.082532P D2=
5、d2 D1=d1單位:MM螺紋標誌PH1d(D)d2(D2)d1(D1)M10.250.1351.0000.8380.729M1.10.250.1351.1000.9380.829M1.20.250.1351.2000.0380.929M1.40.30.1621.4001.2051.075M1.60.350.1891.6001.3731.221M1.80.350.1891.8001.5731.421M20.40.2172.0001.7401.567M2.20.450.2442.2001.9081.713M2.50.450.2442.5002.2082.013M30.50.2713.0002.6
6、752.459M3.50.60.3253.5003.1102.850M40.70.3794.0003.5453.242M4.50.750.4064.5004.0133.688M50.80.4335.0004.4804.134M610.5416.0005.3504.9171.1.3英制細牙螺紋 P=n/25.4 H=0.866025P d=(d)*25.4 D=d H1=0.541266P d2=(d-0.649519/n)*25.4 D2=d2 D1=(d-1.082532/n*25.4 D1=d1單位:MM螺紋標誌(Reference)nPH1d(D)d2(D2)d1(D1)No.0#80
7、UNF0.0600-80 UNF800.31750.1721.5241.3181.818No.1#72 UNF0.0730-72 UNF720.35280.9191.8541.6261.473No.2#64 UNF0.0860-64 UNF640.39690.2152.1841.9281.755No.3#56 UNF0.0990-56 UNF560.45360.2462.5152.2202.024No.4#48 UNF0.1120-48 UNF480.52950.2862.8452.5022.271No.5#44 UNF0.1250-44 UNF440.57730.3123.1752.7992
8、.550No.6#40 UNF0.1380-40 UNF400.63500.3443.5053.0942.817No.8#36 UNF0.1640-36 UNF360.70560.3824.1663.7083.401No10#32 UNF0.1900-32 UNF320.79380.4304.8264.3104.967No.12#28 UNF0.2160-28 UNF280.90710.4915.4864.8974.5031.1.3英制粗牙螺紋 P=n/25.4 H=0.866025P d=(d)*25.4 D=d H1=0.541266P d2=(d-0.649519/n)*25.4 D2=
9、d2 D1=(d-1.082532/n*25.4 D1=d1單位:MM螺紋標誌(Reference)nPH1d(D)d2(D2)d1(D1)No.1#64 UNF0.0730-64 UNF640.39690.2151.8541.5981.425No.2#56 UNF0.0860-56 UNF560.45360.2462.1841.8901.694No.3#48 UNF0.0990-48 UNF480.52920.2862.5152.1721.941No.4#40 UNF0.1120-40 UNF400.63500.3442.8452.4332.156No.5#40 UNF0.1250-40 U
10、NF400.63500.3443.1752.7642.487No.6#32 UNF0.1380-32 UNF320.79380.4303.5052.9902.647No.8#32 UNF0.1640-32 UNF320.79380.4304.1663.6503.307No10#24 UNF0.1900-24 UNF241.05830.5734.8264.1383.680No.12#24 UNF0.2160-24 UNF241.05830.5735.4864.7984.3411.2 通孔孔徑 螺釘連接零件上預制之通孔如圖示 通孔孔徑之尺寸如下表(單位:mm)螺釘公稱直徑通孔直徑(d)mm一級二級
11、三級四級11.11.21.31.21.31.41.51.41.51.61.81.61.71.821.71.822.11.82.02.12.222.22.42.62.22.42.62.82.32.52.72.92.52.72.93.12.62.833.233.23.43.63.53.73.94.244.34.54.85.51.54.855.3655.35.55.86.566.46.677.81.3攻螺紋孔孔徑與螺釘相配的螺紋攻絲孔孔徑取決外內螺紋結合比之大小.螺紋結合比(%)=(螺釘公稱直徑-攻絲孔直徑)(2*螺紋結合高度)*100%1.3.1 米制細牙螺紋(單位:mm)螺紋標誌公稱直徑螺紋結合
12、比(%)1009590858075706560M11.0000.780.790.810.820.830.840.850.860.87M1.11.1000.880.890.910.920.930.940.950.960.97M1.21.2000.980.991.011.021.031.041.051.061.07M1.41.4001.181.191.211.221.231.241.251.261.27M1.61.6001.381.391.411.421.431.441.451.461.47M1.81.8001.581.591.611.621.631.641.651.661.67M22.0001.
13、731.741.761.771.781.801.811.821.84M2.22.2001.931.941.961.971.982.002.012.022.04M2.52.5002.122.142.162.182.102.222.242.252.27M33.0002.622.642.662.682.602.722.742.752.77M3.53.5003.123.143.163.183.103.223.243.253.27M44.0003.463.493.513.543.573.593.623.653.68M4.54.5003.963.994.014.044.074.094.124.154.18
14、M55.0004.464.494.514.544.574.594.624.654.68M5.5*5.5004.964.995.015.045.075.095.125.155.18M66.0005.195.235.275.315.355.395.435.475.511.3.2 米制細牙螺紋(單位:mm)螺紋標誌公稱直徑螺紋結合比(%)1009590858075706560M11.0000.730.740.760.770.780.800.810.820.84M1.11.1000.830.840.860.870.880.900.910.920.94M1.21.2000.930.940.960.970
15、.981.001.011.021.04M1.41.4001.081.091.111.121.141.161.171.191.21M1.61.6001.221.241.261.281.301.321.331.351.37M1.81.8001.421.441.461.481.501.521.531.551.57M22.0001.571.591.611.631.651.681.701.721.74M2.22.2001.711.741.761.791.811.831.861.881.91M2.52.5002.012.042.062.092.112.132.162.182.21M3*0.53.0002.
16、462.492.512.542.572.592.622.652.68M3.53.5002.852.882.922.952.983.013.053.083.11M4*0.74.0003.243.283.323.363.393.433.473.513.55M4.54.5003.693.733.773.813.853.893.933.974.01M5*0.85.0004.134.184.224.264.314.354.394.444.48M66.0004.924.975.035.085.135.195.245.305.351.3.3 英制細牙螺紋(單位:MM)螺紋標誌公稱直徑100959085807
17、5706560No.0#80 UNF1.5241.181.201.211.231.251.271.281.301.32No.1#72 UNF1.8541.471.491.511.531.551.571.591.611.62No.2#64 UNF2.1841.751.781.801.821.841.861.881.901.93No.3#56 UNF2.5152.022.052.072.102.122.152.172.202.22No.4#48 UNF2.8452.272.302.332.362.392.422.442.472.50No.5#44 UNF3.1752.552.582.612.642
18、.682.712.742.772.80No.6#40 UNF3.5052.822.852.892.922.962.993.023.063.09No.8#36 UNF4.1663.403.443.483.523.553.593.633.673.71No10#32 UNF4.8263.974.014.054.104.144.184.224.274.31No.12#28 UNF5.4864.504.554.604.654.704.754.804.854.901.3.4英制粗牙螺紋(單位:MM)螺紋標誌公稱直徑1009590858075706560No.1#64 UNF1.8541.421.451.4
19、71.491.511.531.551.571.60No.2#56 UNF2.1841.691.721.741.771.791.821.821.861.89No.3#48 UNF2.5151.941.972.002.032.062.092.092.142.17No.4#40 UNF2.8452.162.192.232.262.302.332.332.402.43No.5#40 UNF3.1752.492.522.562.592.632.662.662.732.76No.6#32 UNF3.5052.652.692.732.772.822.862.862.952.99No.8#32 UNF4.16
20、63.313.353.393.443.483.523.523.613.65No10#24 UNF4.8263.683.743.793.853.913.973.973.084.14No.12#24 UNF5.4864.344.404.454.514.574.634.634.744.801.3.5板材上孔與板邊間距(對所有螺釘適用)板材上螺紋孔與材這間距如圖要求b2T(b為孔與板邊的距離,T為板材厚度)1.4 配合尺寸同種規格的螺釘需與同種規格螺紋的螺母或與預攻同規格螺紋孔和,鋼板配合,如對M3的螺釘需與M3的螺母配合,或者與在鋼板上攻出M3的螺紋孔相配合.1.5 機械性能(包括材質與熱處理).一
21、般用CM10.61.7M1.10.61.7M1.20.61.7M1.40.72M1.60.82.6M 1.80.82.6M21.03M2.21.33.8M 2.51.33.8M31.54.5M3.51.75M426M4.52.26.7M52.27.5M639M1*0.20.51.4M1.1*0.20.51.4M1.2*0.20.51.4M1.4*0.20.51.4螺 紋 標 誌旋 合 長 度M1.6*0.20.51.5M1.8*0.20.51.5M2*0.250.61.9M2.2*0.250.61.9M2.5*0.350.82.6M3*0.3513M3.5*0.3513M4*0.51.54.5
22、M4.5*0.51.54.5M5*0.51.54.5M5.5*0.51.54.5M6*0.752.47.1注:對薄材,鋼板厚度至少要大於2-3個螺距1.7特殊螺釘1.7.1自攻螺釘硬化層深度一般要進行表面處理,表面滲碳或碳氮共滲層深度如下錶表(單位mm)螺 紋 標 誌硬 化 層 深 度 MinMax1#64 2#56 3#480.040.104#40 5#40 6#300.050.188#30 10#24 12#240.100.23硬度表面滲碳或碳氮共滲處理後硬度之一般要求: 表面硬度 不小於HRC或450HV 芯部硬度 26-40HRC270-390HV尺寸自攻螺釘截面要為弧形三角形,如圖(
23、L為導引長度,a為收尾長度)C,D值如下表.螺 紋 標 誌CDMaxMinMaxMin00#900.04810.04610.04590.04390#800.06130.05930.05880.05681#640.07450.07250.07100.06902#560.08750.08400.08400.08053#480.10100.09750.09700.09354#400.11450.11150.10950.10605#400.12750.12400.12250.11906#320.14100.13600.13500.13008#320.16700.16200.16100.156010#240.19400.18900.18500.180010#320.
