唐山市泰和自动化设备有限公司_公制美制英制螺纹对照表
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& 公制美制英制螺纹对照表
公制美制英制螺纹对照表
给大家分享一下 faNpX?, &A型美制螺纹（UNF）常用规格 ‑,!3,oiq && & & &外螺纹 & &内螺纹 UX&x^Y2 &-4 & &9/16"-19牙 & &14.28 & &13.08 8‑j,M4D*& &-6 & &11/16''-16 & &17.46 & &16.1 {lh szc &-8 & &13/16''-16 & &20.64 & &19.28 cMiO|N@1 &-10 & &1''-14 & &25.40 & &23.57 h |tB  &-12 & &1(3/16)''-12 & &30.00 & &28.32 )Al{84&(} &-16 & &1(7/16)''-12 & &36.51 & &34.67 Ys$3}LA{ &-20 & &1(11/16)''-12 & &42.86 & &41.02 SW7V7S*Q &z{Akh02V@ &C型JIC37度美制UNF螺纹常用规格 (" G'WCLz &-4 & &7/16”-20 & &11.11 & &10.03 ‑e~xbQr &-5 & &1/2”-20 & &12.70 & &11.32-6 & &9/16”-18 & &14.28 & &13.08 NH'YgL6* &-8 & &3/4”-16 & &19.00 & &17.686S!J &-10 & &7/8”-14 & &22.22 & &20.68 P|J&?KbC &-12 & &1(1/16)"-12 & &26.98 & &25.15 Ki; &++ &-16 & &1(5/16)"-12 & &33.33 & &31.5 ZF!BkZ Uo &-20 & &1(5/8)"-12 & &41.28 & &39.44 LX+cZ &-24 & &1(7/8)"-12 & &47.62 & &45.8 iDP@cg &-32 & &2(1/2)"-12 & &63.5 & &61.67 j/51j@^L &\h4&y &英制圆柱管螺纹（BSPP）常用规格 dApgzU@; &-4 & &1/4”-19 & &13.157 & &11.55 |,hur8BE\ &-6 & &3/8”-19 & &16.662 & &14.95 @"%@;&W&t &-8 & &1/2”-14 & &20.955 & &18.63 F)$7 ?')p &-12 & &3/4”-14 & &26.441 & &24.11 Q} &f3? &-16 & &1”-11 & &33.249 & &30.29 YZ@pwhZ& &-20 & &1(1/4)''-11 & &41.91 & &38.95 SmU'ao.\& &v{UpdB"]5 &英制圆锥管螺纹（BSPT）常用规格 bsDck &lI && & & &基面大径 & &基准距离 A4&q_07# && &1/4”-19 & &13.157 & &6 }@EK'k&&& &3/8”-19 & &16.662 & &6.4 .gy&5/‑.SZ && &1/2”-14 & &20.955 & &8.2 R0?/'&gt && &3/4”-14 & &26.441 & &9.5 aF4L{'qK && &1”-11 & &33.249 & &10.4 Q,Y doD && &1(1/4)''-11 & &41.91 & &12.7 i'9m &o0bmO@;&ir &e_^C &X "TaT &"(1 G#&&美制圆锥管螺纹（NPT） 9mJf && &1/8”-27 & &10.24 & &4 3xVYo$g && &1/4”-18 & &13.60 & &4 L8|v.?J && &3/8”-18 & &17.04 & &4.32 [‑ijsK && &1/2”-14 & &21.22 & &4.48 "Lx Hg]') && &3/4”-14 & &26.57 & &4.75 GIryh+&a && &1”-11(1/2)” & &33.22 & &4.6 qBc!A~8K4' && &1(1/4)”-11.5 & &41.96 & &4.83
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地址：唐山市路北区体育馆道17号 电话：&国外常用英制螺纹的代号、名称和标准号/英制螺纹
英国标准BS84一般用途螺纹牙型角55° B.S.W. 标准惠氏粗牙系列，一般用途圆柱螺纹英制螺纹B.S.F. 标准惠氏细牙系列，一般用途圆柱螺纹 Whit.S 附加的惠氏可选择系列，一般用途圆柱螺纹 Whit 惠氏牙型的非标准螺纹
牙型角55° BSPT　英国标准管螺纹美国标准ANSI B1.10一般用途螺纹牙型角60°，牙底是平的或圆弧的内、外螺纹。 圆弧牙底的只用于外螺纹，没有内螺纹 UN　恒定螺距系列的统一螺纹 UNC　粗牙系列的统一螺纹 UNF 细牙系列的统一螺纹 UNEF　超细牙系列的统一螺纹 UNS① 特殊系列的统一螺纹 UNR 圆弧牙底恒定螺距系列的统一螺纹 UNRC 圆弧牙底粗牙系列统一螺纹 UNRF 圆弧牙底细牙系列统一螺纹 UNREF 圆弧牙底超细牙系列统一螺纹 UNRS 圆弧牙底特殊系列统一螺纹 表中螺距单位为每英寸牙数。钻孔直径为攻丝推荐钻孔尺寸，单位为毫米。 　　
公称直径 （英寸〖毫米〗）粗牙螺距 （UNC）细牙螺距 （UNF）超细牙螺距 （UNEF）钻孔直径 （粗牙）钻孔直径 （细牙）#0　0.060　〖1.524〗​80​​1.2#1　0.073　〖1.854〗6472​1.51.5#2　0.086　〖2.184〗5664​1.81.8#3　0.099　〖2.515〗4856​2.02.1#4　0.112　〖2.845〗4048​2.32.4#5　0.125　〖3.175〗4044​2.52.6#6　0.138　〖3.505〗3240​2.72.9#8　0.164　〖4.166〗3236​3.43.5#10　0.190　〖4.826〗2432​3.74.0#12　0.216　〖5.486〗2428324.54.61/4　〖6.35〗2028325.15.45/16　〖7.938〗1824326.56.93/8　〖9.525〗1624328.08.47/16　〖11.113〗1420289.310.01/2　〖12.7〗13202810.711.59/16　〖14.288〗12182412.313.15/8　〖15.875〗11182413.514.73/4　〖19.05〗10162016.717.57/8　〖22.225〗9142019.420.61　〖25.4〗8122022.223.4美国标准ANSI B1.20.1 管螺纹牙型角60° NPT② 一般用途的锥NPSC 用直管螺纹 NPTR 导杆连接用锥管螺纹 NPSM 机械连接用直管螺纹 NPSL 锁紧螺母用直管螺纹 NPSH 软管连接用直管螺纹 以上为美国标准ANSIB1.20.1 牙型角为60°的英制管螺纹
干密封标准型锥管螺纹 美国标准ANSIB1.20.3 Ⅰ型 PTF-SAE SHORT 干密封短型锥管螺纹 美国标准ANSIB1.20.3 Ⅱ型 NPSF 干密封标准型燃油用直管内螺纹 美国标准ANSIB1.20.3 Ⅲ型 NPS1 干密封标准型一般用直管内螺纹 美国标准ANSIB1.20.3 Ⅳ型 ACME③ 一般用途的梯形螺纹 美国标准ANSIB1.5 牙型角为29°的英制传动螺纹 ①尺寸和公差使用与标准系列相同的公式计算的标准系列之外的所有直径与螺距组合。 ②我国的60°圆锥管螺纹GB/T与之等效。 ③ACME螺纹包括一般用途的和定心的两种配合的梯形螺纹，其中一般用途者与我国标准GB/T规定的梯形螺纹的性能相类同。 螺距用每英寸的牙数来表示，如：每英寸11牙，则螺距=25.4/11=2.309mm。
公制、美制和英制螺纹标准/英制螺纹
NPT，PT，G　都是管螺纹． NPT 是 National (American) Pipe Thread 的缩写，属于美国标准的 60 度锥管螺纹，用于北美地区．国家标准可查阅 GB/T PT 是 Pipe Thread 的缩写，是 55 度密封圆锥管螺纹，属惠氏螺纹家族，多用于及英联邦国家．常用于水及煤气管行业，锥度规定为 1:16． 国家标准可查阅 GB/T G 是 55 度非螺纹密封管螺纹，属惠氏螺纹家族．标记为 G 代表圆柱螺纹．国家标准可查阅 GB/T 另外螺纹中的1/4、1/2、1/8 标记是指螺纹尺寸的直径，单位是英寸． 行内人通常用分来称呼螺纹尺寸，一寸等于8分，1/4 寸就是2分，如此类推． G 好像就是管螺纹的统称(Guan)，55，60度的划分属于功能性的，俗称管圆。即螺纹由一圆柱面加工而成。 ZG俗称管锥，即螺纹由一圆锥面加工而成，一般的水管接头都是这样的 Rc表示圆锥内螺纹 ZG表示锥管螺纹，3/4"表示英寸的标注,就是3/4寸圆锥管螺纹，《》上有。 准确的来讲它的内径是19.05毫米，但这是老标准，现在已经不用了。现在的国标规定ZG3/4〃螺纹内径是20毫米。 它的表示方法应该是：ZG3/4〃。其中（〃）是英寸的代表符号。 一英寸等于25.4毫米。一英寸等于8英分。3/4的来历是6/8=3/4。俗称6分。 同样ZG1/2〃螺纹的管子内径≈15毫米。俗称4分。 ZG1〃螺纹的管子内径≈25毫米。俗称1寸。 ZG11/2〃螺纹的管子内径≈32毫米。俗称1寸半。 锥管螺纹只用于液压系统连接；而管螺纹G3/4〃只用于水管连接。锥管螺纹与管螺纹极为相似，区别只在锥度上。 DN是公称直径
我国新旧标准比较/英制螺纹
我国的管基本延用国际标准，采用英寸制。因为英国标准与美国标准斗法，所以国外标准分为了两种55度60度的。以前我国只是将管螺纹分两类：G和Z，一些工厂里仍然延用这种用法，将一些配管接头的孔标G或Z或ZG，如G1/2表示55度圆柱管螺纹，Z1/2或ZG1/2表示55度圆锥管螺纹，Z1/2(60度)或ZG1/2(60度)表示60度圆锥管螺纹。 现在的分法是55度非为G，55密封管螺纹有两种：Rp圆柱内螺纹配圆锥外螺纹R1和Rc圆锥内螺纹配圆锥外螺纹R2，60度圆锥管螺纹即NPT管螺纹标为如NPT1/2 用螺距来表示，美英制螺纹用每英寸内的螺纹牙数来表示，这是它们最大的区别， 公制螺纹是60度等边牙型，英制螺纹是等腰55度牙型，60度。 公制螺纹用公制单位， 美英制螺纹用英制单位。 管螺纹主要用来进行管道的连接，其内外螺纹的配合紧密，有直管与锥管两种。公称直径是指所连接的管道直径，显然螺纹大径比公称直径大。 1/4，1/2，1/8是英制螺纹的公称直径，单位是英寸。
牙型要素/英制螺纹
&牙型在通过螺丝螺纹轴线的剖面上，螺纹的轮廓形状称为。相邻两牙侧面间的夹角称为牙型角。常用普通螺纹的牙型为三角形，牙型角为60°。 大径小径中径&大径:是指和螺丝外螺纹的牙顶、内螺纹的牙底相重合的假想柱面或锥面的直径，外螺纹的大径用d表示，内螺纹的大径用D表示。 & 小径:是指和外螺纹的牙底、内螺纹的牙顶相重合的柱面或锥面的直径，外螺纹的小径用d1表示，内螺纹的小径用D1表示。 & 中径:在大径和小径之间，设想有一柱面(或锥面)，在其轴剖面内，素线上的牙宽和槽宽相等，则该假想柱面的直径称为中径。 线数形成螺纹的螺旋线的条数称为线数。有和多线螺纹之分，多线螺纹在垂直于轴线的剖面内是均匀分布的。 螺距相邻两牙在中径线上对应两点轴向的距离称为螺距。同一条螺旋线上，相邻两牙在中径线上对应两点轴向的距离称为导程。线数n、螺距P、导程S之间的关系为：&S=n·P 旋向沿轴线方向看，方向旋转的螺纹成为右旋螺纹，逆时针旋转的螺纹称为左旋螺纹。 & 螺纹的牙型、大径、螺距、线数和旋向称为螺纹五要素，只有五要素相同的内、外才能互相旋合。&测量结果编辑 采用机器视觉技术，设计螺纹参数测量自动检测，并对标准螺纹试样的螺纹夹角、螺距和中径等参数进行测量。测量结果表明，螺纹参数在规定的误差范围之内。由于视觉检测具有高效和可靠的特点，经过进一步考察，认为可用于生产实践中。 & 在通过螺丝螺纹轴线的剖面上，螺纹的轮廓形状称为牙型。相邻两牙侧面间的夹角称为牙型角。常用普通螺纹的牙型为三角形，牙型角为60°。
测量方法/英制螺纹
①螺纹夹角的测量 & 螺纹夹角也叫牙型角。螺纹夹角的测量可通过测量侧面角来实现，侧面角是螺纹侧面与螺纹轴线的垂直面之间的夹角。螺纹牙的近似轮廓在螺纹两侧直线段采样，对采样点进行直线最小二乘拟合。 & ②螺距的测量 & 螺距是指螺纹上某一点至相邻螺纹牙上对应点之间的距离。测量时必须平行于螺纹轴线。 & ③螺纹中径的测量 & 螺纹中径是中径线沿垂直于轴线距离，中径线是一个假想的线。
检测系统/英制螺纹
①硬件系统&螺纹参数自动检测系统基于PC架构，主要由照明系统、CCD相机和光路成像系统、、图像采集卡、图像处理系统、检测系统以及电控系统等组成。 & 测量时，经照明系统照明后，通过CCD相机和光路成像系统采集紧固件的螺纹图像，然后经过图像采集卡，将数字化图像传到计算机，计算机对该数字图像按相应算法处理后，计算出螺纹的牙型角、螺距和中径等参数，并与标准进行比较，计算出偏差。 & ②软件系统&螺纹参数自动检测的系统主要包括系统控制模块&图像处理模块等。 & 系统控制模块：初始化；完成系统图像接口卡及标准参数的初始化配置。图像操作；采集并保存8位的灰色图像，捕获图像到内存。 & 图像处理模块：图像处理模块包括减少、突出螺纹轮廓边缘信息的图像预处理算法，检测和提取轮廓边缘信息的边缘检测和提取算法，测量图像实际尺寸的系统标定算法，以及用于计算螺纹参数的算法等。
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美制螺纹对照表11
美公称 直径0.073（#1） 1.854制外外径 Min 1.68 1.3 2.26 2.88 2.3 2.46 2.26 2.5
3.46 3.08 3.8 3.66螺螺螺纹 Max 1.66 1.6 1.76 1.86 2.7 2.96 2.413 2.12 2.2 2.3 2.26 2.4 3.09372纹纹中径 Min 1.56 1.04 1.12 1.76 2.52 2.32 2.06 2.18 2.26 2.82 2.24 3.92尺寸表内 螺螺纹 Min 1.66 1.6 1.76 1.86 2.7 2.96 2.32 2.9 2.52 2.08 2.58 3.72 螺纹 Min 1.94 1.2 1.18 1.14 1.56 2.38 2.46 2.76 2.66 2.16 2.6 2.4 小径 Max 1.42 1.9 1.98 1.62 2.3 2.1 2.06 2.72 2.48 2.66 2.6 3.44单位： 纹中径 Max 1.92 1.86 1.1 1.66 2.58 2.3 2.28 2.32 2.02 2.04 3.16 3.22mm螺纹 规格1-64UNC 1-72UNF牙 数64 72 56 64 48 56 40 48 40 44 32 40牙 高螺 公差 螺纹 距 代号 Max1.2 1.2 2.4 2.4 2.6 2.6 2.8 2.8 3. 3. 3.2 3.2螺纹小径 公差 Max 1.76 1.1 1.92 1.96 1.14 1.12 2.88 2.34 2.08 2.66 2.54 2.96 2.74828 代号 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B螺纹外径 Min 1.2 1.2 2.4 2.4 2.6 2.6 2.8 2.8 3.175 3.175 3.175 3.175 3.2 3.2钻孔 直径 1.397 1.397 1.3 1.8 1.778 1.778 1.9 2.4 2.4 2.6 2.3 2.1 2.1 2.20.086(#2) 2.1842-56UNC 2-64UNF0.099(3#)) 2.5153-48UNC 3-56UNF0.112(#4) 2.8454-40UNC 4-48UNF0.125(#5) 3.1755-40UNC 5-44UNF0.138(#6） 3.5056-32UNC 6-40UNF0.236 0.397 2A 3A 0.21 0.353 2A 3A 0.271 0.454 2A 3A 0.236 0.397 2A 3A 0.315 0.529 2A 3A 0.271 0.454 2A 3A 0.378 0.635 2A 3A 0.315 0.529 2A 3A 0.378 0.635 2A 3A 0.344 0.577 2A 3A 0.472 0.794 2A 3A 0.378 0.635 2A 3A0.164（#8） 4.1668-32UNC 8-36UNF32 36 24 28 32 36 40 48 56 24 28 32 36 40 48 56 200.19（#10） 10-24UNC 4.826 10-28UNS 10-32UNF 10-36UNS 10-40UNS 10-48UNS 10-56UNS 0.216（#12） 12-24UNC 0.486 12-28UNF 12-32UNEF 12-36UNS 12-40UNS 12-48UNS 12-56UNS 1/4-20UNC0.25& 6.351/4-24UNS 1/4-27UNS 1/4-28UNF24 27 280.472 0.784 2A 3A 0.421 0.706 2A 3A 0.63 1.058 2A 3A 0.54 0.907 2A 0.472 0.784 2A 3A 0.421 0.706 2A 0.378 0.635 2A 0.315 0.529 2A 0.271 0.454 2A 0.63 1.058 2A 3A 0.54 0.907 2A 3A 0.472 0.784 2A 3A 0.421 0.706 2A 0.378 0.635 2A 0.315 0.529 2A 0.271 0.454 2A 0.756 1.27 1A 2A 3A 0.63 1.058 2A 0.56 0.941 2A 0.54 0.907 1A 2A4.6 4.6 4. 4.14 4.826 4.14 4.22 5.461 5. 5.54 5.54 5.08 5.06 6. 6.6 6.63.2 4.9 4.12 4.74 4.44 4.38 4.12 5.9 5.14 5.334 5. 5.48 6.32 6.18 6.68 6.15953.98 3.4 4.66 4.52 4.94 4.78 4.66 4.72 4.92 4.34 5.18 5.56 5.5 5.46 5.323.1 3.06 4.16 4.32 4.74 4.318 4.08 4.02 4.16 4.82 4.4 5.48 5.58 5.74 5.32 5.65153.72 3.86 3.16 3.26 3.4 4.76 4.16 4.96 4.66 4.34 4.16 4.76 4.7 5.46 5.562B 3B 2B 3B 2B 3B 2B 2B 3B 2B 2B 2B 2B 2B 3B 2B 3B 2B 3B 2B 2B 2B 2B 1B 2B 3B 2B 2B 1B 2B3.302 3.302 3.6 3.683 3.683 3.4 3. 4.8 4.4 4.8 4.8 4.4 4.2 5.4 4.4 5.207 5.334 5.43.06 3.64 3.7 4.064 4.14 4.6 4. 4.78 4.78 4.826 4.8 4.953 5.4 5.8 5. 5. 5.5883.98 3.4 4.66 4.38 4.8 4.1 4.06 4.12 4.78 4.2 5.5 5.5 5.5 5.86 5.523.1 3.98 4.94 4.44 4.86 4.46 4.82 4.8 4.92 5.26 5.86 5.92 5.94 5.16 5.944.6 4.6 4.826 4.826 4.826 4.826 4.826 4.826 4.826 4.826 4.826 5.4 5.4 5.4 5.4 5.4 6.35 6.35 6.35 6.35 6.35 6.35 6.353.4 3.4 3.8 3.8 3.6 4.4 4.8 4. 4.572 4.572 4.572 4.4 4.4 5.4 5.6 5.2 5.41021/4-32UNEF 1/4-36UNS 1/4-40UNS 1/4-48UNS 1/4-56UNS 5/16-18UNC32 36 40 48 56 180.472 0.784 0.421 0.378 0.315 0.271 0.841 0.706 0.635 0.529 0.545 1.4110.55/16-20UN 5/16-2420 240.756 0.631.27 1.0585/8-27UNS 5/8-28UN 5/8-32UNEF27 28 320.56 0.540.941 0.9070.472 0.784 0.706 0.635 0.529 1.4110.325& 8.2555/8-36UNS 36 0.421 5/8-40UNS 40 0.378 5/8-48UNS 40.312 0.315 3/8-16UNC 18 0.8413/8-18UNS 3/8-20UN 3/8-24UNF18 20 240.841 1.411 0.756 1.27 0.63 1.0583A 2A 3A 2A 2A 2A 2A 1A 2A 3A 2A 3A 1A 2A 3A 2A 2A 3A 2A 3A 2A 2A 2A 1A 2A 3A 2A 2A 3A 1A6.35 6. 6.14 6.68 7.02 7.02 7..6 7.5 7.1 7.1 7.64 7.18 9.98 9.525 9.52 9.525 9.497066.2 5.44 6.38 6.28 7.52 7.76 7.68 7.92 7.747 7.7 7.94 7.88 9.22 9. 9.26 9.222745.98 5.94 5.78 6.08 6.56 7. 7.22 7.96 7.22 7.92 7.16 7.74 8.76 8.02 8.725.7 5.2 5.842 5. 6.48 6.92 7.52 7.58 7.46 7.2 7.3 7.7 8.98 8.82 8.76 8.663945.72 5.94 5.22 5.08 6.56 6.2 6.72 6.96 6.46 6.62 7.72 7.68 7.7 7.22 8.223B 2B 3B 2B 2B 2B 2B 1B 2B 3B 2B 3B 1B 2B 3B 2B 2B 3B 2B 3B 2B 2B 2B 1B 2B 3B 2B 2B 3B 1B5.4 5. 5.8 5.8 6.8 6.2 6.8 6.8 6.6 7.6 7. 7.366 7.8 7. 8.4 8.3825.6 5.4 5.8 5.969 6.731 6.731 6. 6.8 7.16 7.8 7.4 7.6 7. 8.4 8.2 8.38 8.6366.38 5.8 5.1 6.56 7.56 7.112 7.112 7.16 7.16 7.22 7.88 7.02 7.76 8.76 8.5 8.665.842 5.12 5.04 6.18 7.18 7.08 7.5 7.6 7.98 7.56 7.9 7.04 8.54 8.3 8.5 8.836666.35 6.35 6.35 6.35 6.35 6.35 6.35 7.5 7.5 7.5 7.5 7.5 7.5 7.5 7.5 9.525 9.525 9.525 9.525 9.525 9.525 9.5255.98 5.4 5.2 5.8 6.8 6.24 6.8 6.8 7.8 7.48 7. 7.366 7.5 7.4 8.74 8.43283/8-27UNS 3/8-28UN 3/8-32UNEF 3/8-36UNS 3/8-40UNC 0.39& 9.906 0.390-27UNS 0.-14UNC 11.11 7/16-16UNS 7/16-18UNS 7/16-20UNF27 28 32 36 40 27 140.56 0.540.941 0.9070.472 0.784 0.421 0.378 0.56 1.081 0.706 0.635 0.941 1.81416 18 200.861.5880.841 1.411 0.756 1.277/16-24UNS 7/16-27UNS 7/16-28UNEF 7/16-32UN 0.5& 12.7 1/2-13UNC24 27 28 32 130.63 0.56 0.541.058 0.941 0.9070.472 0.784 1.163 1.9541/2-12UNS121.262.1172A 3A 2A 2A 3A 2A 3A 2A 2A 2A 1A 2A 3A 2A 3A 2A 1A 2A 3A 2A 2A 2A 3A 2A 3A 1A 2A 3A 2A 3A9. 9.06 9.525 8. 9.14 9.9 11.5 11.8 11.5 11.5 11.6 11.5 11.5 12.9 12.7 12.9.12 9.96 9.2 9.9 9.88 10.3 10.2 10.5 10.7 10.7 10.5 10.7 10.9 12.385 12.8 12.41048.66 8.78 8.98 9.4 9.92 9.38 9.7 10.5 10.8 10.2 10.3 8.5 10.9 11. 11.98. 8.34 8.62 8.12 9.48 9. 9.86 9.3 10.3 10.7 10.381 10.6 10.4 11.9 11.336 11.38.16 8.02 8.72 8.86 8.92 8.94 8.64 9.54 9.18 9.72 9.5 10.2 10.1 10.4 10.32B 3B 2B 2B 3B 2B 3B 2B 2B 2B 1B 2B 3B 2B 3B 2B 1B 2B 3B 2B 2B 2B 3B 2B 3B 1B 2B 3B 2B 3B8.382 8.382 8.509 8.4 8.4 8.763 8. 9.144 9.144 9.144 9.398 9.398 9.2 9.2 9.8 10.6 10.6 10.8 10. 10.4148.636 9.6 8.763 8.6 8.8 8.6 9.4 9.6 9.652 9.906 10.033 10.033 9.8 10.8 11.4 10.6 11.4 10.48.66 8.72 8.38 9.8 9.86 9.94 9.3 10.6 10.287 10.287 10.287 10.4 10.2 10.9 11.43 11.43 11.43 11.98.06 9.56 9.14 9.48 9.24 10.9 10.1 10.8 10.2 10.6 10.1 10.6 10.4 11.9 11.99.525 9.525 9.525 9.525 9.525 9.525 9.525 9.525 9.525 9.906 11.5 11.5 11.5 11.8 11.8 11.5 11.5 11. 12.7 12.7 12.7 12.78.8 8.6 8.2 8.2 8.2 9.2 9.8 9.4 9.24 9.8 10.6 10.6 10.3 10.3 10.31/2-14UNS 1/2-16UNS 1/2-18UNS 1/2-20UNF14 16 18 201/2-24UNS 1/2-27UNS 1/2-28UNEF 1/2-32UN 0. 9/16-12UNC24 27 28 32 129/16-14UNS 9/16-16UN 9/16-18UNF14 16 189/16-20UN 9/16-24UNEF 9/16-27UNS 9/16-28UN 9/16-32UN20 24 27 28 321.081 1.814 2A 0.86 1.588 2A 3A 0.841 1.411 2A 0.756 1.27 1A 2A 3A 0.63 1.058 2A 0.56 0.941 2A 0.54 0.907 2A 3A 0.472 0.784 2A 3A 1.26 2.117 1A 2A 3A 1.081 1.814 2A 0.86 1.588 2A 3A 0.841 1.411 1A 2A 3A 0.756 1.27 2A 3A 0.63 1.058 2A 3A 0.56 0.941 2A 0.54 0.907 2A 3A 0.472 0.784 2A12.4 13.208 12.667 12.667 12.667 12.7 12.1 12. 12. 14.9 14.4 14.5 14.8 14.5 14. 14.6 14.5 14.262112.7 12. 12.2 12.6 12. 12.2 12. 13.9 13.2 14.2 14.031 14.7 14.1 14.4 14.4 14.109711.2 11. 11.5 11.2 12.8 12. 12.7 12.4 13.7 13. 13.335 13. 13.462 13.2 13.3 13.511.8 11.3 11.3 11.1 11.8 12.1 12.6 12.3 12.3 13.3 13.2 13.7 13.5 13.3 13.610.1 10. 12.3 11.7 11. 11.618 11.1 11.2 11.4 12.2 12.573 12.573 12.2 12.2 13.4 13.5 13.31722B 2B 3B 2B 1B 2B 3B 2B 2B 2B 3B 2B 3B 1B 2B 3B 2B 2B 3B 1B 2B 3B 2B 3B 2B 3B 2B 2B 3B 2B10.8 10. 11.4 11. 11.684 11.4 11.4 11.8 11. 12.573 12.573 12.8 12.2 12.8 13.8 13.6 13.436611.4 11.2 11.8 11.524 11.811 11. 11.877 12.3 12.446 12.446 12.4 12.6 13.081 13.081 12. 13.8 13.4 13.5 13.614411.8 11.1 11.5 11.7 12. 12.4 12.4 12.4 13.3 13.6 13.6 13.462 13.462 13.2 13.2 13.911.7 11.4 12.7 11.2 12.6 12.7 12.4 14.4 13.274 13.1 13.4 13.7 13.7 13.3 13.7 13.886212.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 12.7 14.5 14.5 14.5 14.5 14.5 14.5 14.5 14.5 14.287510.5 11.5 11.7 11.7 11.905 11.905 11.905 11.905 11.905 12.8 12.8 12.7 12.7 13.2 13.2 13.2 13.5 13.5 13.49250.625& 15.8755/8-11UNC111.375 2.3095/8-12UN 5/8-14UNS 5/8-16UN 5/8-18UNF12 14 16 181.262.1171.081 1.814 0.86 1.588 0.841 1.4115/8-16UN 5/8-24UNEF 5/8-27UNS 5/8-28UN 5/8-32UN 0. 11/16-12UN 11/16-16UN 11/16-20UN 11/16-24UNEF 11/16-28UN20 24 27 28 32 12 16 20 24 280.756 0.63 0.56 0.541.27 1.058 0.941 0.9070.472 0.784 1.26 0.86 0.756 0.63 0.54 2.117 1.588 1.27 1.058 0.9073A 1A 2A 3A 2A 3A 2A 2A 3A 1A 2A 3A 2A 3A 2A 3A 2A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A14.4 15. 15. 15.4 15.875 15.4 15.875 15.842 15.875 15. 15.1 15.875 15. 17.5 17.5 17.5 17.432 9.614.1 15.527 15.8 15.3 15.2 15.5 15.2 15.6 15.9 15.682 15.7 15.3 17.2 17.7 17.1 17.513.8 14.4 14.9 14.2 14.5 14.1 15.5 15.7 15.8 15.4 15.7 16.7 16. 16.637 16.2 16.845313.9 14.3 14.7 14.3 14.7 14.2 14.2 15.5 15.3 15. 15.6 15.8 16.8 16.1 16.698 16.748813.1 13.7 13.3 13.1 13.5 14.1 14.7 14.2 14. 14.793 14.1 14.8 15.2 15.2 16.8 16.48463B 1B 2B 3B 2B 3B 2B 2B 3B 1B 2B 3B 2B 3B 2B 3B 2B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B13.8 13.8 13.589 13.589 13.8 14. 14.351 14.351 14.4 14.732 14.732 14.859 14.4 15.4 15.8 15.748 15.748 16.2 16.8 16.484613.4 13.1 14. 14.4 14.2 14.2 14. 14.986 14.6 15.113 15.052 15.3 15.621 15.6 15. 16.8 16.813.4 14.4 14.9 14.8 14.1 14.1 15.5 15.7 15.7 15.4 15.4 16.3 16. 16.637 16.2 16.873213.2 14.6 14.5 14.2 14.2 15.4 15.2 15.7 15.2 15.2 15.7 16.223 16.1 16.7 16.2 16.997714. 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 15.875 17.5 17.5 17.5 17.5 17.462513.5 13.5 13.3 13.5 14.7 14.7 14.7 14.7 15.08 15.08 15.08 15.08 15.08 15.2 15.875 1.2 16.2 16.511/16-32UN 0.75& 19.05 3/4-10UNC32 100.472 0.794 1.513 2.543/4-12UN 3/4-14UNS 3/4-16UNF12 14 161.262.1171.081 1.814 0.86 1.5883/4-18UNS 3/4-20UNEF 3/4-24UNEF 3/4-28UN 3/4-32UN 0. 13/16-10UNC 13/16-12UN 13/16-16UN 13/16-20UNEF 13/16-28UN18 20 24 28 32 10 12 16 20 280.841 1.411 0.756 1.27 0.63 0.54 1.058 0.9070.472 0.784 1.513 1.26 0.86 0.756 0.54 2.54 2.117 1.588 1.27 0.9073A 2A 3A 1A 2A 3A 2A 3A 2A 1A 2A 3A 2A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A17.6 17.3 19. 19. 19.9 19. 19. 19.05 19.5 19. 19. 20.5 20.5 20.5 20.5 20.60717.2 17.5 18.3 18.4 18.2 18.2 18.2 18.6 18.4 18.7 18.1 20.8 20.6 20.7 20.916.9 16.3 17. 17.9 17.7 17.8 18.5 18.2 18.2 18.4 18.5 19.2 19.2 19. 19.812 20.017716.5 16.8 17.2 17.493 17.8 17.7 17.7 18.7 18.227 18.7 18. 18.6 18.5 19.7 19.2 19.216.7 16.1 15.9 16.3 16.6 17.7 17.7 17.7 17.5 17.968 18.1 17.9 18.8 18.2 19.2 19.5253B 2B 3B 1B 2B 3B 2B 3B 2B 1B 2B 3B 2B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B16.6 16.8 16.8 16.764 16.764 17.8 17.8 17.526 17.4 17.907 18.034 18.4 18.4 17.3 18.8 18.923 18.923 19.2 19.659616.4 16.2 16.3 17.8 17.4 17.3 17.8 17.874 18.161 18. 18.227 18.3 18.7 18.796 18.6 19. 19.816.9 16. 17.399 17.399 17.9 17.8 18.8 18.5 18.7 18.7 18.4 18.5 18.4 19.3 19. 19.812 20.048216.7 17.1 17.8 17. 18.7 18.2 18.3 18.3 18.7 18.8 18.6 19.2 19.3 19.8 19.217.5 17. 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 19.05 20.5 20.5 20.5 20.5 20.637516.5 16.5 16.5 17.3 17.5 17.5 17.7 17.7 17. 18.255 18.255 18.255 18.255 18.255 18.8 19.05 19.05 19.2 19.842513/16-32UN 0.875& 22.225 7/8-9UNC32 90.472 0.784 1.68 2.8227/8-10UNS 7/8-12UN 7/8-14UNF10 12 141.513 2.54 1.26 2.117 1.081 1.8147/8-16UN 7/8-18UNS 7/8-20UNEF 7/8-24UNS 7/8-27UNS 7/8-28UN 7/8-32UN 0. 15/16-9UNC 15/16-12UN 15/16-16UN 15/16-20UNEF16 18 20 24 27 28 32 9 12 16 200.861.5880.841 1.411 0.756 1.27 0.63 0.56 0.54 1.058 0.941 0.9070.472 0.784 1.68 1.26 0.86 0.756 2.822 2.117 1.588 1.273A 2A 3A 1A 2A 3A 2A 2A 3A 1A 2A 3A 2A 3A 2A 2A 3A 2A 2A 2A 3A 2A 3A 2A 3A 2A 3A 2A 3A 2A20.6 20.7 22. 22.8 22.225 22.4 22.225 22. 22. 22.225 22.5 22. 22. 23.5 23.5 23.5 23.776920.2 20.4 21.9 21.3 21.7 21.4 21.2 21.2 22.6 22.4 22.7 22.3 23.8 23.6 23.220.9 20.9 20.1 20.7 20.8 21.4 21.8 21.5 21.2 21.2 21.4 21.4 21.2 22.2 22.419.5 20.6 20.7 20. 20.1 20.3 21.3 21.7 21. 21.7 21. 21.4 21.4 22.2 22.119.7 19.3 18.6 19.1 19.4 20. 20.066 20.5 20.7 20.4 21. 21.1 20.1 21.8 21.2 22.26563B 2B 3B 1B 2B 3B 2B 2B 3B 1B 2B 3B 2B 3B 2B 2B 3B 2B 2B 2B 3B 2B 3B 2B 3B 2B 3B 2B 3B 2B19.6 19. 19.177 19.177 19. 19.939 20.2 20.8 20. 20.4 21.082 21.209 21.4 21.4 22.1 21.8 22.098 22.098 22.428219.4 19.2 19.7 20.2 20.6 20.7 20.3 21.8 21.049 21.336 21. 21.402 21.3 21.2 21.971 21.6 22.20.9 20.3 20.3 20.574 20.9 21.4 21.8 21.1 21.5 21.9 21.7 21.4 21.6 22.4 22.3 22.98720.3 20.5 20.1 20.7 20.988 21.2 21.8 21.5 21.7 21.4 21.7 21.8 22.6 22.1 22.7 23.136920.5 20. 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 22.225 23.5 23.5 23.5 23.812519.5 19.2 19.2 19.3 20.5 20.5 20.5 21.7 21.7 21.43 21.43 21.43 21.43 21.43 21.7 21.8 24.765 22.225 22.22515/16-28UN 15/16-32UN 1& 25.4 1-8UNC28 32 80.540.9070.472 0.784 1.89 3.1751-8-10UNS 7/8-12UN10 121.513 2.54 1.26 2.1171-8-14UNF141.081 1.8147/8-16UN 1-8-18UNS 1-8-20UNEF 1-8-24UNS 1-8-27UNS 1-8-28UN 1-8-32UN 1. 1-1/16UNC 1-1/16UN 1-1/16-12UN16 18 20 24 27 28 32 80.861.5880.841 1.411 0.756 1.27 0.63 0.56 0.54 1.058 0.941 0.9070.472 0.784 1.89 3.175121.262.1173A 2A 3A 2A 3A 1A 2A 3A 2A 1A 2A 3A 1A 2A 3A 2A 3A 2A 2A 3A 2A 2A 2A 3A 2A 3A 2A 2A 3A 2A23. 23.6 23.2 25. 25.3 25. 25.8 25.4 25. 25.4 25.4 25.367 25.5 25.4 25. 26.7 26.323.9 23.2 23.7 24. 25.4 25.4 24.2 25.1 25.5 25.3 25.3 25.9 25.6 26.7 26.822.987 23.2 23.9 23.7 23.3 23.9 24.3 24.4 24.8 24.9 24.6 24.2 24.4 24.9 24. 25.570222.1 23.147 23.8 23. 23.208 23.6 23.1 23. 24.7 24.1 24.1 24.572 24.6 24.9 24.2 24.5 25.425422. 22.7 22.7 21.5 22.6 22.3 23.3 23.6 23.5 23.7 24.4 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95.25 95.25 95.25 96.54-8UN 4-10UNS 4-12UN 4-14UNS 4-16UN8 10 12 14 163.175 2A 3A 1.513 2.54 2A 1.26 2.117 2A 3A 1.081 1.814 2A 0.86 1.588 2A 3A1.89101.531 101.6 101.547 101.549 101.6 101.554 101.554 101.6101.15 101.219 101.219 101.26 101.31 101.293 101.316 101.36199.5 99. 100.226 100.376 100.523 100.56999.8 99. 100.101 100.218 100.373 100.45797.5 98.5 99.3 99.662 99.70772B 3B 2B 2B 3B 2B 2B 3B98.171 98.171 98. 99.314 99.8 99.872898.806 98.2 99.9 100.025 100.228 100.09699.5 99.949 100.226 100.226 100.421 100.569 100.56999.6 100.18 101.23 100.388 100.625 100.762 100.714101.6 101.6 101.6 101.6 101.6 101.6 101.6 101.698.425 98.425 98.425 100.013 100.013 100.013 100.013 100.013
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