德国工业标准--螺栓预紧力对照表

德标、欧标、国际、国标对照表—— DIN EN ISO GB 对照表新德标旧德标 英文名 中文名 国标 DIN EN ISO 4014DIN 931-1 Hexagon head bolts - Product grades A and B(ISO 4014:1999) 六角头螺栓 GB/T 5782-2000 DIN EN ISO 4016DIN 601 Hexagon head bolts - Product grade C(ISO 4016:1999) 六角头螺栓 C 级 GB/T 5780-2000 DIN EN ISO 4017DIN 933 Hexagon head screws - Product grade A and B (ISO 4017:1999) 六角头螺栓 全螺纹 GB/T 5783-2000 DIN EN ISO 4018DIN 558 Hexagon head screws - Product grade C (ISO 4018:1999) 六角头螺栓 全螺纹 C 级 GB/T 5781-2000 DIN EN ISO 8676DIN 961 Hexagon head screws with metric fine pitch thread - Product grade A and B(ISO 8676:1999) 六角头螺栓 细牙 全螺纹 GB/T 5786-2000 DIN EN ISO 8765DIN 960 Hexagon head bolts with fine pitch thread - Product grades A and B(ISO 8765:1999) 六角头螺栓 细牙 GB/T 5785-2000 DIN EN ISO 4032DIN 934 Hexagon nuts,style 1-Product grades A and B(ISO: 4032:1999) 1型六角螺母 GB/T 6170-2000 DIN EN ISO 4033Hexagon nuts,style 2-Product grades A and B(ISO: 4033:1999) 2型六角螺母 GB/T 6175-2000 DIN EN ISO 4034DIN 555 Hexagon nuts - Product grade C (ISO 4034:1999) 六角螺母 C 级 GB/T 41-2000 DIN EN ISO 4035DIN 439-2 Hexagon thin nuts(chamfered)-Product grade A and B (ISO 4035:1999) 六角薄螺母 GB/T 6172.1-2000 DIN EN ISO 4036DIN 439-1 Hexagon thin nuts - Product grade B(unchamfered)(ISO 4036:1999) 六角薄螺母 无倒角 GB/T 6174-2000 DIN EN ISO 8673DIN 934| DIN 971-1 Hexagon nuts,style 1,with metric fine pitch thread - Product grades A and B (ISO 8673:1999) 1型六角螺母 细牙 GB/T 6171-2000 DIN EN ISO 8674DIN 971-2 Hexagon nuts,style 2,with metric fine pitch thread - Product grades A and B (ISO 8674:1999) 2型六角螺母 细牙 GB/T 6176-2000 DIN EN ISO 8675DIN 439-2 Hexagon thin nuts with metric fine pitch thread - Product grades A and B (ISO 8675:1999) 六角薄螺母 细牙 GB/T 6173-2000 DIN EN ISO 4762DIN 912 Hexagon socket head cap screws(ISO 4762:1997) 内六角圆柱头螺钉 GB/T 70.1-2000 DIN EN ISO 7380 Hexagon socket button head sxrews (ISO 7380:1997) 内六角平圆头螺钉GB/T 70.2-2000DIN EN ISO 10642DIN 7991 Hexagon socket countersunk head screws (ISO 10642:1997) 内六角沉头螺钉 GB/T 70.3-2000 DIN EN ISO 1207DIN 84 Slotted cheese head screws-Product grade A(ISO 1207:1992) 开槽圆柱头螺钉 GB/T 65-2000 DIN EN ISO 1580DIN 85 Slotted pan head screws-Product grade A(ISO 1580:1994) 开槽盘头螺钉 GB/T 67-2000 DIN EN ISO 2009DIN 963 Slotted countersunk flat head screws(common head style)(ISO 2009:1994) 开槽沉头螺钉 GB/T 68-2000 DIN EN ISO 2010DIN 964 Countersunk slotted raised head screws(common head style)-Produce grade A(ISO 2010:1994) 开槽半沉头螺钉 GB/T 69-2000 DIN EN ISO 7045DIN 7985 Pan head screws with type H or type Z cross recess-Product grade A(ISO 7054:1994) 十字槽盘头螺钉 GB/T 818-2000 DIN EN ISO 7046-1DIN 965 Countersunk flat head screws (common head style)with type H or type Z cross recess,product grade A-Part 1:Steel of property class 4.8(ISO 7046-1:1994) 十字槽盘头螺钉 第1部分：钢4.8级 GB/T 819.1-2000 DIN EN ISO 7046-2DIN 965 Cross recessed countersunk flat head screws (common head style),product grade A-Part2:Steel of property class 8.8,stainless steel and nonferous metals(ISO 7046-2:1990) 十字槽沉头螺钉 第2部分：钢8.8、不锈钢A2-70和有色金属CU2或CU3 GB/T 819.2-1997 DIN EN ISO 7047DIN 966 Countersunk raised head screws (common head style) with type H or type Z cross recess-Product grade A(ISO 7047:1994) 十字槽半沉头螺钉 GB/T 820-2000 DIN EN ISO 7048Cross recessed cheese head screws (ISO 7048:1998) 十字槽圆柱头螺钉 GB/T 822-2000 DIN EN ISO 10644Screw and washer assemblies with plain washers-Washer hardness classes 200HV and 300HV(ISO 10644:1998) 螺栓或螺钉和平垫圈组合件 GB/T 9074.1-2002 DIN EN ISO 10510Tapping screw and washer assemblies with plain washers(ISO 10510l:1999) 自攻螺钉和平垫圈组合件 GB/T 9074.18-2002 IDN EN ISO 15480Hexagon washer head drilling screws with tapping screws thread (ISO 15480:1999) 六角凸缘自钻自攻螺钉 GB/T 15856.5-2002 IDN EN ISO 15481Cross recessed pan head drilling screws with tapping screw thread(ISO 15481:1999) 十字槽盘头自钻自攻螺钉 GB/T 15856.1-2002 IDN EN ISO 15482 Cross recessed countersunk head drilling screws with tapping screw thread (ISO 15482:1999) 十字槽沉头自钻自攻螺钉GB/T 15856.2-2002IDN EN ISO 15483Cross recessed raised countersunk head drilling screws with tapping screw thread(ISO 15483:1999) 十字槽半沉头自钻自攻螺钉 GB/T 15856.3-2002 DIN EN ISO 10669Plain washers for tapping screw and washer assemblies - Normal and large series - Product grade A （ISO 10669:1999) 平垫圈 用于自攻螺钉和垫圈组合件 GB/T 97.5-2002 DIN EN ISO 10673Plain washers for screw and washer assemblies - Small,normal and large series - Product grade A (ISO 10673:1998) 平垫圈 用于螺钉和垫圈组合件 GB/T 97.4-2002 DIN EN ISO 2338DIN 7 Parallel pins,of unhardened steel and austenitic stainless steel(ISO 2338:1997) 圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 119.1-2000 DIN EN ISO 8733DIN 7979 Parallel pins whit internal thread,of unhardened steel and austenitic stainless steel(ISO 8733:1997) 内螺纹圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 120.1-2000 DIN EN ISO 8734DIN 6325 Parallel pins,of hardened steel or martensitic stainless steel(Dowel pins)(ISO 8734:1997) 圆柱销 淬硬钢和马氏体不锈钢 GB/T 119.2-2000 DIN EN ISO 8735DIN 7979 Parallel pins with internal thread,of hardened steel and martensitic stainless steel(ISO 8735:1997) 内螺纹圆柱销 淬硬钢和马氏体不锈钢 GB/T 120.2-2000 DIN EN ISO 8748DIN 7344 Spring-type straight pins,coiled,heavy duty (ISO 8748:1997) 弹性圆柱销 卷制 重型 GB/T 879.3-2000 DIN EN ISO 8750DIN 7343 Spring-type straight pins,coiled,standard duty (ISO 8750:1997) 弹性圆柱销 卷制 标准型 GB/T 879.4-2000 DIN EN ISO 8751Spring-type straight pins,coiled,light duty （ISO 8751:1997) 弹性圆柱销 卷制 轻型 GB/T 879.5-2000 DIN EN ISO 8752DIN 1481 Spring-type straight pins,slotted,heavy duty (ISO 8752:1997) 弹性圆柱销 直槽 重型 GB/T 879.1-2000 DIN EN ISO 13337DIN 7346 Spring-type straight pins,slotted,light duty (ISO 13337:1997) 弹性圆柱销 直槽 轻型 GB/T 879.2-2000 DIN EN ISO 1234DIN 94 Split pins （ISO1234:1997) 开口销 GB/T 91-2000 DIN EN ISO 7089Plain washers-Normal series-Product grade A 平垫圈 A 级 GB/T 97.1-2002 DIN EN ISO 7090Plain washers,chamfered-Normal series-Product grade A(ISO 7090:2000) 平垫圈 倒角型 A 级 GB/T 97.2-2002 DIN EN ISO 7091Plain washers-Normal series-Product grade C(ISO 7091:2000) 平垫圈 C 级 GB/T 95-2002 DIN EN ISO 7092 Plain washers-Small series-Product grade A(ISO 7092:2000)小垫圈 A 级 GB/T 848-2002DIN EN ISO 7093-1 Plain washers-Large series-Part 1: Product grade A(ISO 70931-1:2000)大垫圈 A 级 GB/T 96.1-2002DIN EN ISO 7093-2Plain washers-Normal series-Part 3: Product grade C(ISO 70936-2:2000) 大垫圈 C 级 GB/T 96.2-2002 DIN EN ISO 7094Plain washers-Extra large series -Product grade C(ISO 7094:2000) 特大垫圈 C 级 GB/T 5287-2002 DIN EN ISO 7040DIN 982| DIN 6924 Prevailing torque type hexagon nuts (with non-metallic insert),style 1 - Property classes 5,8 and 10(ISO 7040:1997) 1型非金属嵌件六角锁紧螺母 GB/T 889.1-2000 DIN EN ISO 7042DIN 980| DIN 6925 Prevailing torque type all-metal hexagon nuts,style 2 - Property classes 5,8, 10 and 12(ISO 7042:1997) 2型全金属六角锁紧螺母 GB/T 6185.1-2000 DIN EN ISO 7719Prevailing torque type all-metal hexagon nuts,style 1- Property classes 5,8 and 10(ISO 7719:1997) 1型全金属六角锁紧螺母 GB/T 6184-2000 DIN EN ISO 10511DIN 985 Prevailing torque type hexagon thin nuts (with non-metallic insert )(ISO 10511:1997) 非金属嵌件六角锁紧薄螺母 GB/T 6072.2-2000 DIN EN ISO 10512DIN 982| DIN 6924 Prevailing torque type hexagon nuts (with non-metallic insert),style 1,with metric fine pitch thread-Property classes 6,8 and 10(ISO 10512:1997) 1型非金属嵌件六角锁紧螺母 细牙 GB/T 889.2-2000 DIN EN ISO 10513 DIN 980|DIN 6925 Prevailing torque type all-metal hexagon nuts,style 2,with metric fine pitch thread - Property classes 8,10 and 12(ISO 10513:1997)2型全金属六角锁紧螺母 细牙GB/T 6185.2-2000原汁原味的德标 DIN (ISO、EN)、美标 IFI (ANSI, ASME, SAE)、公制美标、日标 JIS 资料！在螺纹紧固件的使用中应用的较广泛的是螺栓－螺母连接副的形式，应用的较多的是有预紧力的连接方式，预紧力的连接可以提高螺栓连接的可靠性、防松能力及螺栓的疲劳强度，并且能增强螺纹连接体的紧密性和刚度。

德标、欧标、国际、国标对照表—— DIN EN ISO GB 对照表新德标旧德标 英文名 中文名 国标 DIN EN ISO 4014 DIN 931-1 Hexagon head bolts - Product grades A and B(ISO 4014:1999) 六角头螺栓 GB/T 5782-2000 DIN EN ISO 4016DIN 601 Hexagon head bolts - Product grade C(ISO 4016:1999) 六角头螺栓 C 级 GB/T 5780-2000 DIN EN ISO 4017DIN 933 Hexagon head screws - Product grade A and B (ISO 4017:1999) 六角头螺栓 全螺纹 GB/T 5783-2000 DIN EN ISO 4018DIN 558 Hexagon head screws - Product grade C (ISO 4018:1999) 六角头螺栓 全螺纹 C 级 GB/T 5781-2000 DIN EN ISO 8676DIN 961 Hexagon head screws with metric fine pitch thread - Product grade A and B(ISO 8676:1999) 六角头螺栓 细牙 全螺纹 GB/T 5786-2000 DIN EN ISO 8765DIN 960 Hexagon head bolts with fine pitch thread - Product grades A and B(ISO 8765:1999) 六角头螺栓 细牙 GB/T 5785-2000 DIN EN ISO 4032DIN 934 Hexagon nuts,style 1-Product grades A and B(ISO: 4032:1999) 1型六角螺母 GB/T 6170-2000 DIN EN ISO 4033Hexagon nuts,style 2-Product grades A and B(ISO: 4033:1999) 2型六角螺母 GB/T 6175-2000 DIN EN ISO 4034DIN 555 Hexagon nuts - Product grade C (ISO 4034:1999) 六角螺母 C 级 GB/T 41-2000 DIN EN ISO 4035DIN 439-2 Hexagon thin nuts(chamfered)-Product grade A and B (ISO 4035:1999) 六角薄螺母 GB/T 6172.1-2000 DIN EN ISO 4036DIN 439-1 Hexagon thin nuts - Product grade B(unchamfered)(ISO 4036:1999) 六角薄螺母 无倒角 GB/T 6174-2000 DIN EN ISO 8673DIN 934| DIN 971-1 Hexagon nuts,style 1,with metric fine pitch thread - Product grades A and B (ISO 8673:1999) 1型六角螺母 细牙 GB/T 6171-2000 DIN EN ISO 8674DIN 971-2 Hexagon nuts,style 2,with metric fine pitch thread - Product grades A and B (ISO 8674:1999) 2型六角螺母 细牙 GB/T 6176-2000 DIN EN ISO 8675DIN 439-2 Hexagon thin nuts with metric fine pitch thread - Product grades A and B (ISO 8675:1999) 六角薄螺母 细牙 GB/T 6173-2000 DIN EN ISO 4762DIN 912 Hexagon socket head cap screws(ISO 4762:1997) 内六角圆柱头螺钉 GB/T 70.1-2000 DIN EN ISO 7380Hexagon socket button head sxrews (ISO 7380:1997) 内六角平圆头螺钉 GB/T 70.2-2000 DIN EN ISO 10642DIN 7991 Hexagon socket countersunk head screws (ISO 10642:1997) 内六角沉头螺钉 GB/T 70.3-2000 DIN EN ISO 1207 DIN 84 Slotted cheese head screws-Product grade A(ISO 1207:1992) 开槽圆柱头螺钉GB/T 65-2000DIN EN ISO 1580DIN 85 Slotted pan head screws-Product grade A(ISO 1580:1994) 开槽盘头螺钉 GB/T 67-2000 DIN EN ISO 2009DIN 963 Slotted countersunk flat head screws(common head style)(ISO 2009:1994) 开槽沉头螺钉 GB/T 68-2000 DIN EN ISO 2010DIN 964 Countersunk slotted raised head screws(common head style)-Produce grade A(ISO 2010:1994) 开槽半沉头螺钉 GB/T 69-2000 DIN EN ISO 7045DIN 7985 Pan head screws with type H or type Z cross recess-Product grade A(ISO 7054:1994) 十字槽盘头螺钉 GB/T 818-2000 DIN EN ISO 7046-1DIN 965 Countersunk flat head screws (common head style)with type H or type Z cross recess,product grade A-Part 1:Steel of property class 4.8(ISO 7046-1:1994) 十字槽盘头螺钉 第1部分：钢4.8级 GB/T 819.1-2000 DIN EN ISO 7046-2DIN 965 Cross recessed countersunk flat head screws (common head style),product grade A-Part2:Steel of property class 8.8,stainless steel and nonferous metals(ISO 7046-2:1990) 十字槽沉头螺钉 第2部分：钢8.8、不锈钢A2-70和有色金属CU2或CU3 GB/T 819.2-1997 DIN EN ISO 7047DIN 966 Countersunk raised head screws (common head style) with type H or type Z cross recess-Product grade A(ISO 7047:1994) 十字槽半沉头螺钉 GB/T 820-2000 DIN EN ISO 7048Cross recessed cheese head screws (ISO 7048:1998) 十字槽圆柱头螺钉 GB/T 822-2000 DIN EN ISO 10644Screw and washer assemblies with plain washers-Washer hardness classes 200HV and 300HV(ISO 10644:1998) 螺栓或螺钉和平垫圈组合件 GB/T 9074.1-2002 DIN EN ISO 10510Tapping screw and washer assemblies with plain washers(ISO 10510l:1999) 自攻螺钉和平垫圈组合件 GB/T 9074.18-2002 IDN EN ISO 15480Hexagon washer head drilling screws with tapping screws thread (ISO 15480:1999) 六角凸缘自钻自攻螺钉 GB/T 15856.5-2002 IDN EN ISO 15481Cross recessed pan head drilling screws with tapping screw thread(ISO 15481:1999) 十字槽盘头自钻自攻螺钉 GB/T 15856.1-2002 IDN EN ISO 15482Cross recessed countersunk head drilling screws with tapping screw thread (ISO 15482:1999) 十字槽沉头自钻自攻螺钉 GB/T 15856.2-2002 IDN EN ISO 15483 Cross recessed raised countersunk head drilling screws with tapping screw thread(ISO 15483:1999) 十字槽半沉头自钻自攻螺钉GB/T 15856.3-2002DIN EN ISO 10669Plain washers for tapping screw and washer assemblies - Normal and large series - Product grade A （ISO 10669:1999) 平垫圈 用于自攻螺钉和垫圈组合件 GB/T 97.5-2002 DIN EN ISO 10673Plain washers for screw and washer assemblies - Small,normal and large series - Product grade A (ISO 10673:1998) 平垫圈 用于螺钉和垫圈组合件 GB/T 97.4-2002 DIN EN ISO 2338DIN 7 Parallel pins,of unhardened steel and austenitic stainless steel(ISO 2338:1997) 圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 119.1-2000 DIN EN ISO 8733DIN 7979 Parallel pins whit internal thread,of unhardened steel and austenitic stainless steel(ISO 8733:1997) 内螺纹圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 120.1-2000 DIN EN ISO 8734DIN 6325 Parallel pins,of hardened steel or martensitic stainless steel(Dowel pins)(ISO 8734:1997) 圆柱销 淬硬钢和马氏体不锈钢 GB/T 119.2-2000 DIN EN ISO 8735DIN 7979 Parallel pins with internal thread,of hardened steel and martensitic stainless steel(ISO 8735:1997) 内螺纹圆柱销 淬硬钢和马氏体不锈钢 GB/T 120.2-2000 DIN EN ISO 8748DIN 7344 Spring-type straight pins,coiled,heavy duty (ISO 8748:1997) 弹性圆柱销 卷制 重型 GB/T 879.3-2000 DIN EN ISO 8750DIN 7343 Spring-type straight pins,coiled,standard duty (ISO 8750:1997) 弹性圆柱销 卷制 标准型 GB/T 879.4-2000 DIN EN ISO 8751Spring-type straight pins,coiled,light duty （ISO 8751:1997) 弹性圆柱销 卷制 轻型 GB/T 879.5-2000 DIN EN ISO 8752DIN 1481 Spring-type straight pins,slotted,heavy duty (ISO 8752:1997) 弹性圆柱销 直槽 重型 GB/T 879.1-2000 DIN EN ISO 13337DIN 7346 Spring-type straight pins,slotted,light duty (ISO 13337:1997) 弹性圆柱销 直槽 轻型 GB/T 879.2-2000 DIN EN ISO 1234DIN 94 Split pins （ISO1234:1997) 开口销 GB/T 91-2000 DIN EN ISO 7089Plain washers-Normal series-Product grade A 平垫圈 A 级 GB/T 97.1-2002 DIN EN ISO 7090Plain washers,chamfered-Normal series-Product grade A(ISO 7090:2000) 平垫圈 倒角型 A 级 GB/T 97.2-2002 DIN EN ISO 7091Plain washers-Normal series-Product grade C(ISO 7091:2000) 平垫圈 C 级 GB/T 95-2002 DIN EN ISO 7092Plain washers-Small series-Product grade A(ISO 7092:2000) 小垫圈 A 级 GB/T 848-2002 DIN EN ISO 7093-1 Plain washers-Large series-Part 1: Product grade A(ISO 70931-1:2000)大垫圈 A 级 GB/T 96.1-2002DIN EN ISO 7093-2 Plain washers-Normal series-Part 3: Product grade C(ISO 70936-2:2000)大垫圈 C 级 GB/T 96.2-2002DIN EN ISO 7094 Plain washers-Extra large series -Product grade C(ISO 7094:2000) 特大垫圈 C 级GB/T 5287-2002DIN EN ISO 7040 DIN 982| DIN 6924 Prevailing torque type hexagon nuts (with non-metallic insert),style 1 - Property classes 5,8 and 10(ISO 7040:1997)1型非金属嵌件六角锁紧螺母GB/T 889.1-2000DIN EN ISO 7042 DIN 980| DIN 6925 Prevailing torque type all-metalhexagon nuts,style 2 - Propertyclasses 5,8, 10 and 12(ISO7042:1997)2型全金属六角锁紧螺母 GB/T 6185.1-2000 DIN EN ISO 7719 Prevailing torque type all-metalhexagon nuts,style 1- Propertyclasses 5,8 and 10(ISO 7719:1997) 1型全金属六角锁紧螺母GB/T 6184-2000 DIN EN ISO 10511 DIN 985 Prevailing torque type hexagon thin nuts (with non-metallic insert )(ISO 10511:1997) 非金属嵌件六角锁紧薄螺母 GB/T 6072.2-2000DIN EN ISO 10512 DIN 982|DIN 6924Prevailing torque type hexagon nuts (with non-metallic insert),style 1,with metric fine pitch thread-Property classes 6,8 and 10(ISO 10512:1997) 1型非金属嵌件六角锁紧螺母 细牙 GB/T 889.2-2000 DIN EN ISO 10513 DIN 980|DIN 6925 Prevailing torque type all-metal hexagon nuts,style 2,with metric fine pitch thread - Property classes 8,10 and 12(ISO 10513:1997) 2型全金属六角锁紧螺母 细牙GB/T 6185.2-2000原汁原味的德标 DIN (ISO 、EN)、美标 IFI (ANSI, ASME, SAE)、公制美标、日标 JIS 资料！ 在螺纹紧固件的使用中应用的较广泛的是螺栓－螺母连接副的形式，应用的较多的是有预紧力的连接方式，预紧力的连接可以提高螺栓连接的可靠性、防松能力及螺栓的疲劳强度，并且能增强螺纹连接体的紧密性和刚度。

注1：该螺栓扭矩表是德国工业标准，此表中扭矩为螺栓达到屈服极限的70%时所测定注2：建议锁紧力矩值为：表中数值×(70-80)%一个8.8级M20螺栓的最大承受拉力有多大? (2011-05-28 18:41:24)转载▼标签： 杂谈一、螺栓的分类普通螺栓一般为4.4级、4.8级、5.6级和8.8级。

高强螺栓一般为8.8级和10.9级，其中10.9级居多。

二、高强度螺栓的概念根据高强度螺栓的性能等级分为：8.8级和10.9级。

其中8.8级仅有大六角型高强度螺栓，在标示方法上，性能等级小数点前的数字代表材料公称抗拉强度σb的1%，小数点后的数字代表材料的屈服强度σs与公称抗拉强度之比的10倍。

M20螺栓8.8性能等级公称抗拉强度σb=800MPa，最小抗拉强度σb=830MPa。

公称屈服强度σs=640 ，最小屈服强度σs=660。

（另外一种解释：小数点前数字表示热处理后的抗拉强度；小数点后的数字表示屈强比即屈服强普通螺栓一般为4.4级、4.8级、5.6级和8.8级。

高强螺栓一般为8.8级和10.9级，其中10.9级居多。

二、高强度螺栓的概念根据高强度螺栓的性能等级分为：8.8级和10.9级。

其中8.8级仅有大六角型高强度螺栓，在标示方法上，性能等级小数点前的数字代表材料公称抗拉强度σb的1%，小数点后的数字代表材料的屈服强度σs与公称抗拉强度之比的10倍。

M20螺栓8.8性能等级公称抗拉强度σb=800MPa，最小抗拉强度σb=830MPa。

公称屈服强度σs=640 ，最小屈服强度σs=660。

（另外一种解释：小数点前数字表示热处理后的抗拉强度；小数点后的数字表示屈强比即屈服强度实测值与极限抗拉强度实测值之比。

8.8级的意思就是螺栓杆的抗拉强度不小于800MPa，屈强比为0.8；10.9级的意思就是螺栓杆的抗拉强度不小于1000MPa，屈强比为0.9。

）抗拉强度也叫强度极限指材料在拉断前承受最大应力值，当钢材屈服到一定程度后，由于内部晶粒重新排列，其抵抗变形能力又重新提高，此时变形虽然发展很快，但却只能随着应力的提高而提高，直至应力达最大值。

螺栓德标欧标国际国标对照表—— DIN EN ISO GB 对比表新德标旧德标 英文名 中文名 国标 DIN EN ISO 4014 DIN 931-1 Hexagon head bolts - Product grades A and B(ISO 4014:1999) 六角头螺栓 GB/T 5782-2000 DIN EN ISO 4016DIN 601 Hexagon head bolts - Product grade C(ISO 4016:1999) 六角头螺栓 C 级 GB/T 5780-2000 DIN EN ISO 4017DIN 933 Hexagon head screws - Product grade A and B (ISO 4017:1999) 六角头螺栓 全螺纹 GB/T 5783-2000 DIN EN ISO 4018DIN 558 Hexagon head screws - Product grade C (ISO 4018:1999) 六角头螺栓 全螺纹 C 级 GB/T 5781-2000 DIN EN ISO 8676DIN 961 Hexagon head screws with metric fine pitch thread - Product grade A and B(ISO 8676:1999) 六角头螺栓 细牙 全螺纹 GB/T 5786-2000 DIN EN ISO 8765DIN 960 Hexagon head bolts with fine pitch thread - Product grades A and B(ISO 8765:1999) 六角头螺栓 细牙 GB/T 5785-2000 DIN EN ISO 4032DIN 934 Hexagon nuts,style 1-Product grades A and B(ISO: 4032:1999) 1型六角螺母 GB/T 6170-2000 DIN EN ISO 4033Hexagon nuts,style 2-Product grades A and B(ISO: 4033:1999) 2型六角螺母 GB/T 6175-2000 DIN EN ISO 4034DIN 555 Hexagon nuts - Product grade C (ISO 4034:1999) 六角螺母 C 级 GB/T 41-2000 DIN EN ISO 4035DIN 439-2 Hexagon thin nuts(chamfered)-Product grade A and B (ISO 4035:1999) 六角薄螺母 GB/T 6172.1-2000 DIN EN ISO 4036DIN 439-1 Hexagon thin nuts - Product grade B(unchamfered)(ISO 4036:1999) 六角薄螺母 无倒角 GB/T 6174-2000 DIN EN ISO 8673DIN 934| DIN 971-1 Hexagon nuts,style 1,with metric fine pitch thread - Product grades A and B (ISO 8673:1999) 1型六角螺母 细牙 GB/T 6171-2000 DIN EN ISO 8674DIN 971-2 Hexagon nuts,style 2,with metric fine pitch thread - Product grades A and B (ISO 8674:1999) 2型六角螺母 细牙 GB/T 6176-2000 DIN EN ISO 8675DIN 439-2 Hexagon thin nuts with metric fine pitch thread - Product grades A and B (ISO 8675:1999) 六角薄螺母 细牙 GB/T 6173-2000 DIN EN ISO 4762DIN 912 Hexagon socket head cap screws(ISO 4762:1997) 内六角圆柱头螺钉 GB/T 70.1-2000 DIN EN ISO 7380Hexagon socket button head sxrews (ISO 7380:1997) 内六角平圆头螺钉 GB/T 70.2-2000 DIN EN ISO 10642DIN 7991 Hexagon socket countersunk head screws (ISO 10642:1997) 内六角沉头螺钉 GB/T 70.3-2000 DIN EN ISO 1207DIN 84 Slotted cheese head screws-Product grade A(ISO 1207:1992) 开槽圆柱头螺钉 GB/T 65-2000 DIN EN ISO 1580 DIN 85 Slotted pan head screws-Product grade A(ISO 1580:1994) 开槽盘头螺钉GB/T 67-2000DIN EN ISO 2009 DIN 963Slotted countersunk flat head screws(common head style)(ISO 2009:1994) 开槽沉头螺钉 GB/T 68-2000 DIN EN ISO 2010 DIN 964Countersunk slotted raised head screws(common head style)-Produce grade A(ISO 2010:1994) 开槽半沉头螺钉 GB/T 69-2000 DIN EN ISO 7045 DIN 7985Pan head screws with type H or type Z cross recess-Product grade A(ISO 7054:1994) 十字槽盘头螺钉 GB/T 818-2000 DIN EN ISO 7046-1 DIN 965 Countersunk flat head screws (common head style)with type H or type Z cross recess,product grade A-Part 1:Steel of property class 4.8(ISO 7046-1:1994) 十字槽盘头螺钉 第1部分：钢4.8级 GB/T 819.1-2000 DIN EN ISO 7046-2DIN 965 Cross recessed countersunk flat head screws (common head style),product grade A-Part2:Steel of property class 8.8,stainless steel and nonferous metals(ISO 7046-2:1990) 十字槽沉头螺钉 第2部分：钢8.8、不锈钢A2-70和有色金属CU2或CU3 GB/T 819.2-1997 DIN EN ISO 7047DIN 966 Countersunk raised head screws (common head style) with type H or type Z cross recess-Product grade A(ISO 7047:1994) 十字槽半沉头螺钉 GB/T 820-2000 DIN EN ISO 7048Cross recessed cheese head screws (ISO 7048:1998) 十字槽圆柱头螺钉 GB/T 822-2000 DIN EN ISO 10644Screw and washer assemblies with plain washers-Washer hardness classes 200HV and 300HV(ISO 10644:1998) 螺栓或螺钉和平垫圈组合件 GB/T 9074.1-2002 DIN EN ISO 10510Tapping screw and washer assemblies with plain washers(ISO 10510l:1999) 自攻螺钉和平垫圈组合件 GB/T 9074.18-2002 IDN EN ISO 15480Hexagon washer head drilling screws with tapping screws thread (ISO 15480:1999) 六角凸缘自钻自攻螺钉 GB/T 15856.5-2002 IDN EN ISO 15481Cross recessed pan head drilling screws with tapping screw thread(ISO 15481:1999) 十字槽盘头自钻自攻螺钉 GB/T 15856.1-2002 IDN EN ISO 15482Cross recessed countersunk head drilling screws with tapping screw thread (ISO 15482:1999) 十字槽沉头自钻自攻螺钉 GB/T 15856.2-2002 IDN EN ISO 15483Cross recessed raised countersunk head drilling screws with tapping screw thread(ISO 15483:1999) 十字槽半沉头自钻自攻螺钉 GB/T 15856.3-2002 DIN EN ISO 10669 Plain washers for tapping screw and washer assemblies - Normal and large series - Product grade A （ISO 10669:1999) 平垫圈 用于自攻螺钉和垫圈组合件GB/T 97.5-2002DIN EN ISO 10673Plain washers for screw and washer assemblies - Small,normal and large series - Product grade A (ISO 10673:1998) 平垫圈 用于螺钉和垫圈组合件 GB/T 97.4-2002 DIN EN ISO 2338DIN 7 Parallel pins,of unhardened steel and austenitic stainless steel(ISO 2338:1997) 圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 119.1-2000 DIN EN ISO 8733DIN 7979 Parallel pins whit internal thread,of unhardened steel and austenitic stainless steel(ISO 8733:1997) 内螺纹圆柱销 不淬硬钢和奥氏体不锈钢 GB/T 120.1-2000 DIN EN ISO 8734DIN 6325 Parallel pins,of hardened steel or martensitic stainless steel(Dowel pins)(ISO 8734:1997) 圆柱销 淬硬钢和马氏体不锈钢 GB/T 119.2-2000 DIN EN ISO 8735DIN 7979 Parallel pins with internal thread,of hardened steel and martensitic stainless steel(ISO 8735:1997) 内螺纹圆柱销 淬硬钢和马氏体不锈钢 GB/T 120.2-2000 DIN EN ISO 8748DIN 7344 Spring-type straight pins,coiled,heavy duty (ISO 8748:1997) 弹性圆柱销 卷制 重型 GB/T 879.3-2000 DIN EN ISO 8750DIN 7343 Spring-type straight pins,coiled,standard duty (ISO 8750:1997) 弹性圆柱销 卷制 标准型 GB/T 879.4-2000 DIN EN ISO 8751Spring-type straight pins,coiled,light duty （ISO 8751:1997) 弹性圆柱销 卷制 轻型 GB/T 879.5-2000 DIN EN ISO 8752DIN 1481 Spring-type straight pins,slotted,heavy duty (ISO 8752:1997) 弹性圆柱销 直槽 重型 GB/T 879.1-2000 DIN EN ISO 13337DIN 7346 Spring-type straight pins,slotted,light duty (ISO 13337:1997) 弹性圆柱销 直槽 轻型 GB/T 879.2-2000 DIN EN ISO 1234DIN 94 Split pins （ISO1234:1997) 开口销 GB/T 91-2000 DIN EN ISO 7089Plain washers-Normal series-Product grade A 平垫圈 A 级 GB/T 97.1-2002 DIN EN ISO 7090Plain washers,chamfered-Normal series-Product grade A(ISO 7090:2000) 平垫圈 倒角型 A 级 GB/T 97.2-2002 DIN EN ISO 7091Plain washers-Normal series-Product grade C(ISO 7091:2000) 平垫圈 C 级 GB/T 95-2002 DIN EN ISO 7092Plain washers-Small series-Product grade A(ISO 7092:2000) 小垫圈 A 级 GB/T 848-2002 DIN EN ISO 7093-1Plain washers-Large series-Part 1: Product grade A(ISO 70931-1:2000) 大垫圈 A 级 GB/T 96.1-2002 DIN EN ISO 7093-2Plain washers-Normal series-Part 3: Product grade C(ISO 70936-2:2000) 大垫圈 C 级 GB/T 96.2-2002 DIN EN ISO 7094 Plain washers-Extra large series -Product grade C(ISO 7094:2000) 特大垫圈 C 级GB/T 5287-2002DIN EN ISO 7040DIN 982| DIN 6924 Prevailing torque type hexagon nuts (with non-metallic insert),style 1 - Property classes 5,8 and 10(ISO 7040:1997) 1型非金属嵌件六角锁紧螺母 GB/T 889.1-2000 DIN EN ISO 7042DIN 980| DIN 6925 Prevailing torque type all-metal hexagon nuts,style 2 - Property classes 5,8, 10 and 12(ISO 7042:1997) 2型全金属六角锁紧螺母 GB/T 6185.1-2000 DIN EN ISO 7719Prevailing torque type all-metal hexagon nuts,style 1- Property classes 5,8 and 10(ISO 7719:1997) 1型全金属六角锁紧螺母 GB/T 6184-2000 DIN EN ISO 10511DIN 985 Prevailing torque type hexagon thin nuts (with non-metallic insert )(ISO 10511:1997) 非金属嵌件六角锁紧薄螺母 GB/T 6072.2-2000 DIN EN ISO 10512DIN 982| DIN 6924 Prevailing torque type hexagon nuts (with non-metallic insert),style 1,with metric fine pitch thread-Property classes 6,8 and 10(ISO 10512:1997) 1型非金属嵌件六角锁紧螺母 细牙 GB/T 889.2-2000 DIN EN ISO 10513 DIN 980|DIN 6925 Prevailing torque type all-metal hexagon nuts,style 2,with metric fine pitch thread - Property classes 8,10 and 12(ISO 10513:1997)2型全金属六角锁紧螺母 细牙GB/T 6185.2-2000。

常用高强度螺栓预紧力和拧紧扭矩(参考)预紧力Fv(kN)及扭紧力矩MA(N·m)计算方式决定施工高强度螺栓扭矩：Ma=1.1 k Pv d式中： k---扭矩系数，此数据由高强度螺栓制造商提供或在安装前实验得到。

通常k=0.11-0.15,详细数据见供货商的质量报告。

Pv---高强度螺栓预拉力， [kN]；d---高强度螺栓直径，mm。

如何确定机螺丝的紧固力矩关于如何紧固螺栓和螺母的文章已经有很多，但如何恰当地紧固机螺丝（Machine Screws）的文章较少。

与如何确保螺栓和螺母的安全连接一样，在紧固机螺丝时，恰当地选择合适的拧紧力矩十分重要。

恰当的、安全的连接直接关系到装配后产品的质量好坏。

因此在紧固机螺丝时，我们应该计算一下合理的拧紧力矩。

紧固机螺丝的这些力矩与紧固螺栓、螺母的力矩相比起来要小得多。

1、机螺丝拧紧力矩的计算常用的计算螺纹紧固件拧紧力矩的公式为：T=D×K×P其中：T：力矩（牛顿?米/英寸?磅1Nm=9 in.1b）D：螺纹的外径（1mm=0.03937 in）K：螺母的摩擦系数（光杆螺栓 K=0.20 镀锌螺栓 K=0.22 上蜡或带润滑螺栓 K=0.10）P：夹紧力（一般是屈服点抗拉强度值的75%）1．1米制机螺丝米制机螺丝（Metric Machine Screws）有不同的强度等级，每个等级都有相应合适的拧紧力矩。

在ISO国际标准中来制机螺丝（Metric Machine Screws）有两个主要的强度等级：4.8级（类似SAE 60M）和8.8级（类似SAE 120M）。

强度等级4.8表示最小的抗拉强度是480MPa，这约等于每英寸70，000磅（即70，000 Psi）。

强度等级8.8表示最小的抗拉强度是880MPa，约等于每英寸127，000磅（127，000Psi）。

米制电镀锌机螺丝拧紧力矩见表1。

1.2 英制机螺丝对于英制机螺丝（Inch Machine Screws）也有不同的强度等级，每个等级都有相应合适的拧紧力矩。