公制螺纹规格一览表

公直称径螺纹基本尺寸螺纹基本偏差螺纹内螺距中径小径螺距公差纹第一系列第二系列第三系列D2d2 mmD1d1mm10.250.838 0.7290.24H0.200.8700.7834H5H1.10.250.8290.254H0.200.8834H5H5G5H1.20.250.9290.200.9830.34H4H5H 5G1.40.301.205 1.0755H0.201.207 1.1831.60.351.373 1.2210.24H0.201.4701.3834H5H1.80.351.573 1.4210.201.670 1.5830.254H4H5H5G20.401.7401.5675H0.251.838 1.7295H6H0.354H2.20.451.098 1.7135G0.252.0381.9295H6G6H2.50.452.208 2.0130.44H0.352.273 2.1215G5H6G6H0.454H5G5Hm m pmmpmm2.56G6H30.502.675 2.4590.354H0.352.773 2.6215G5H6G3.50.603.1102.856H0.353.273 3.1210.55H .6G .6H .7G7H公直称径螺纹基本尺寸螺纹基本偏差螺纹内螺距中径小径螺距公差纹第一系列第二系列第三系列D2d2mmD1d1mm40.703.5453.2420.65G0.503.6753.4596G6H7G4.50.754.0133.6887H0.504. 1753.9590.75G6G6H50.804.4804.1347G0.504.6754.4597H0.85G6G5.50.505.1754.9596 H7G7H61 5.3504.9170.755G0.755.5135.1886G0.505.6755.4596H716.3505.9177G0.756.5136.1887H0.506.6756.45915G81.257.1886.6476G 17.3506.9176H0.757.5137.1887GO.57.6757.4597H91.258.1887.6471.255G18.3507.917 5H0.758.5138.1886G0.508.6758.4956Hm m pmmpmm101.59.0268.3767G1.259.1888.6477H19.3508.9171.55G0.759.5139.1885H0.509.6759.4596G 111.510.0269.3766H110.3509.9177G0.7510.51310.1887H0.5010.67510.459121.7510.86 310.1060.55G1.511.02610.3765H1.2511.18810.6476G111.35010.9176H0.7511.51311.1 887G0.511.67511.4597H14212.70111.8350.755G1.513.02612.3765H1.2513.18812.6476 G1.0013.35012.9176H0.7513.51313.1887G0.5013.67513.4597H151.514.02613.37615G1.014.35013.9175H162 14.70113.8356G1.5 15.02614.3766H115.35014.9177GO.7515.51315.1887HO.515.67515.459公直称径螺纹基本尺寸螺纹基本偏差螺纹内螺距中径小径螺距公差纹第一系列第二系列第三系列D2d2 mmD1d1mm171.5 16.026 15.376 1.25 5G116.350 15.917 6G6H182.5 16.376 15.294 7G2.0 16.701 15.835 7H1.5 17.026 16.376 1.5 5G1 17.350 16.917 6G0.7517.513 17.188 6H0.517.675 17.459 7G7H202.5 18.376 17.294 1.75 5G2 18.701 17.835 6G1.5 19.026 18.376 6Hm m pmmpmm201.0 19.350 18.917 7G0.7519.513 19.1887H0.519.675 19.495 2 5G6G222.5 20.376 19.294 6H2.0 20.701 19.835 7G1.521.02620.376 7H1 21.350 20.917 2.5 5G0.7521.513 21.188 6G0.521.675 21.4956H7G7H243 22.051 20.752 0.75 5G2 22.701 21.835 5H1.5 23.026 22.376 6G1 23.35022.917 6H0.7523.513 23.188 7G252.0 23.701 22.835 7H1.5 24.026 23.376 1 5G124.35023.917 5H261.5 25.026 24.376 6G273 25.051 23.752 6H2 25.701 24.835 7G1.5 26.02625.376 7H1 26.350 25.917 1.5 5G0.826.513 26.188 5H282 26.701 25.835 6G1.5 27.02626.376 6H1 27.350 26.917 7G303.5 27.727 26.211 7H328.051 26.752 2 5G2 28.70127.835 5H1.5 29.026 28.376 6G1 29.350 28.917 6H0.7529.513 29.188 7G322 30.70129.835 7H1.5 31.026 30.376 3 5G333.5 30.727 29.211 5H331.051 29.752 6G2 32.70130.835 6H1.5 32.02631.376 7G132.350 31.917 7H0.7532.513 32.188 螺纹基本偏差螺纹内外螺纹公差纹ESEiESEiESEiES4003804h0-30040004g6g-17-55-174g6g0-3806g-17-65-176h0-480450 4503h4h0-2604505604h0-340741874185g6g-18-60-185605605h6h0-4205h6h0-4206g-1 8-71-186h0-5304805303h4h0-2804806704h0-360781885185g6g-18-63-186006705h4h0-4505h6h0-4506g-18-74-186h0-5604203803h4h0-2504204804h0-3205g6g-17-57-175h6h 0-4006g-17-67-176h0-5004804503h4h0-2804805604h0-360781874185g6g-18-63-18600 5605G5G0-4506007106g-18-74-186h0-5605306304h0-400861999195g6g-19-69-196908006f-34-97-3410419119196g-19-82-1985010006h0-6305607104h0-4209019109195g6g-19-72-197109006f-34-101-3410919131196g-19-86-1990011206h0-6706008004h0-450 9520120205g6g-20-76-2075010006f-35-106-35中径D2um小径D1um中径d2um大径d1um4811520145206g-20-91-2095012506h0-7105606304h0-420601999195g6g-19-72-1 97108006f-34-101-3410919119196g-19-86-1990010006h0-67080011205h6h0-60012020 160206e-50-125-50100014006f-35-111-3614520200206g20-95-20120018006h0750共六纹第一纹螺纹基本偏差螺纹内外螺纹公差纹ESEiESEiESEiES21146215h6h0-67021181216e-53-138-53112016006f-36-121-3616121 221216g-21-106-21140020006h0-85011722162225h6h0-71014022202226e-56-146-561 18018006f-38-128-3817222246226g-22-112-22150022406h0-90012424184246f-38-138-3814924224246g-24-119-24125020006h0-95018424274248g-24-174-24160025008h0-1 50012822172225h6h0-80015422212226e-56-156-56132019006f-38-138-381922225822 6g-22-122-22170023606h0-100014426216266f-40-150-4017626262266g-26-138-26150 023606h0-112021626326268g-26-206-26190030008h0-180015328240286e-63-181-631 25021206f-42-160-4218828293286g-28-146-28160026506h0-1180中径D2um小径D1um中径d2um大径d1um11113322828363288g-28-218-28200033508h0-190017232268326e-67-199-67140 023606f-45-177-4521232332326g-32-164-32180030006h0-132025632407328g-32-244-32224037508h0-212011520132206e-50-140-5095011206f-36-126-3613820160206g-20-110-20118014006h0-90017020200201500180013422172226e-56-162-56112015006f-38 -144-3816222212226g-22-128-22140019006h0-106020222258221800236015126216266 e-60-178-60125019006f-40-158-4018626262266g-26-144-26160023606h0-1180226263 26268g-26-216-26200030008h0-1900共六纹第二纹螺纹基本偏差螺纹内外螺纹公差纹ESEiESEiESEiES16828240286f-42-174-4220828293286g-28-160-28180026506h0-132025228363288g-28-240-282 24033508h0-212018232268326f-45-185-4522232332326g-32-172-32190030006h0-1400 26832407328g-32-256-32236037508h0-224019434299346f-48-198-4823434369346g-34 -184-34200033506h0-1500中径D2um小径D1um中径d2um大径d1um28434459348g-34-270-34250042508h0-236020838338386f-52-212-522123841338 6g-38-198-38303037506h0-160026538513388g-38-288-38222 047508h0-250026642397426f-58-228-5822443492436g-42-212-42322045006h0-1700280426 02428g-42-307-42140056008h0-265011822172226e-56-168-56172015006f-38-150-381 5022212226g-22-134-22212019206h0-112019022258227g6g-22-162-22158023607h6h0 -140013226216266e-60-185-60196019006f-40-165-4017026262266g-26-151-26238023 606h0-125021226326268g-26-226-26192030008h0-200016032268326e-67-217-672320 23606f-45-195-4520032332326g-32-182-32282030006h0-150025032407328g-32-268-3 2218037508h0-236018038338386e-71-241-71262030006f-52-222-5222438413386g-38-208-38318037506h0-170028038513388g-38-303-38260047508h0-265021248448486e-8 5-285-853********f-63-263-6326548548486g-48-248-48383050006h0-2000335486784 88g-48-363-48063008h0-3150共六纹第三纹螺纹基本偏差外螺纹Ei-36-73-56-73-56-42-42-85-42-67-85-67-48-48-93-48-75-93-75-36-36-73-56-73-56-42-42-85-67-85-67-53-104-119-104-85-60-114-129-114-95-63-120-135大径d1um-120-100-53-104-119-104-85-106-156-142-126-106共六纹第一纹螺纹基本偏差外螺纹Ei-125-178-161-146-125-140-196-178-162-140-188-174-150-260-236-140-196-178-162-140-220-206-180-306-280-275-254-240-212大径d1um-363-335-303-281-268-236-407-375-156-142-126-106-196-178-162-140-240-220-206-180-306-280共六纹第二纹螺纹基本偏差外螺纹Ei-254-240-212-363-335-281-268-236-407-375-313-299-265大径d1um-459-425-332-318-280-488-450-393-377-335-572-530-196-178-162-140-162-140-240-220-206-180-306-280-303-281-268-236-407-375-351-332-318-280-488-450-460-43 8-423-375-648-600共六纹第三纹。

G、RP（内） PF（日） 0.6403t 圆柱管螺纹（55°）上部H/6 下部H/6 削平ZG、R（外）、RC（内）、PT（外）、NPT（内）圆锥管螺纹（55°）上部H/6 下部H/6 削平Z 0.8t 布锥管螺纹（60°）上部0.033t下部0.033t BSP、BSPP=G 英制管螺纹（55°）上部H/6 下部H/6 削平UNC（粗）、UNF（细） 美制螺纹（60°） 上部H/8 下部H/4 削平BSW（粗）、BSF（细） 惠制螺纹（55°） 上部H/6 下部H/6 削平注意：美制与惠制螺纹均为紧固件类螺纹圆柱管螺纹公称直径为管子内径尺寸。

公制螺纹加工表内螺纹小径：D1=D-1.082532t外螺纹小径：d1=d-1.082532t公制螺纹 粗牙（60°）公制螺纹 细牙（60°）螺纹规格螺距（t）底孔深度螺纹规格螺距（t）底孔深度M30.50 2.507.50M8 1.007.0015.00 M40.70 3.3010.50M10 1.009.0015.00 M50.80 4.2012.00M12 1.5010.5022.50 M6 1.00 5.0015.00M14 1.5012.5022.50 M8 1.25 6.7518.75M16 1.5014.5022.50 M10 1.508.5022.50M18 1.5016.5022.50 M12 1.7510.2526.25M20 1.5018.5022.50 M14 2.0012.0030.00M22 1.5020.5022.50 M16 2.0014.0030.00M24 2.0022.0030.00 M18 2.5015.5037.50M27 2.0025.0030.00 M20 2.5017.5037.50M30 2.0028.0030.00 M22 2.5019.5037.50M33 2.0031.0030.00 M24 3.0021.0045.00M36 2.0034.0030.00 M27 3.0024.0045.00M42 2.0040.0030.00 M30 3.5026.5052.50M48 2.0046.0030.00注意：底孔尺寸均为加工螺纹孔时专用尺寸。

G、RP（内） PF（日） 0.6403t 圆柱管螺纹（55°）上部H/6 下部H/6 削平ZG、R（外）、RC（内）、PT（外）、NPT（内）圆锥管螺纹（55°）上部H/6 下部H/6 削平Z 0.8t 布锥管螺纹（60°）上部0.033t下部0.033t BSP、BSPP=G 英制管螺纹（55°）上部H/6 下部H/6 削平UNC（粗）、UNF（细） 美制螺纹（60°） 上部H/8 下部H/4 削平BSW（粗）、BSF（细） 惠制螺纹（55°） 上部H/6 下部H/6 削平注意：美制与惠制螺纹均为紧固件类螺纹圆柱管螺纹公称直径为管子内径尺寸。

公制螺纹加工表内螺纹小径：D1=D-1.082532t外螺纹小径：d1=d-1.082532t公制螺纹 粗牙（60°）公制螺纹 细牙（60°）深度尺寸均为加工螺纹孔时孔深度尺寸。

（规定为15倍螺距）G 英制圆柱管螺纹（55°）加工一览表小径：d1=d-1.2807tZG 英制锥管螺纹（55°）加工一览表小径：d=d-1.2807t注意：底孔尺寸均为加工螺纹孔时专用尺寸。

深度尺寸均为加工螺纹孔时孔深度尺寸。

（规定为15倍螺距）Z 圆锥管螺纹（布锥管螺纹） （60°）小径：d=d-1.6t美制螺纹（UNC、UNF）参数表（60°）底孔尺寸均为加工螺纹孔时专用尺寸。

深度尺寸均为加工螺纹孔时孔深度尺寸。

（规定为15倍螺距）惠氏螺纹（BSW、BSF）参数表（55°）小径：d1=d-1.280655t注意：in为英寸符号，一英寸等于25.4毫米。

底孔尺寸均为加工螺纹孔时专用尺寸。

深度尺寸均为加工螺纹孔时光孔深度尺寸。

（规定为15倍螺距）惠氏螺纹为紧固件螺纹。

公称直径为螺纹大径。