表5A-标准载荷和抗拉强度值 公称螺纹直径和螺纹节距 M1.6x0.35 M2x0.4 M2.5x0.45 M3x0.5 M3.5x0.6 M4x0.7 M5x0.8 M6x1 M8x1.25 M10x1.5 M12x1.75 M14x2 M16x2 M20x2.5 M24x3 M30x3.5 M36x4 应力面积mm2 1.27 2.07 3.39 5.03 6.78 8.78 14.2 20.1 36.6 58.0 84.3 115 157 243 353 561 817 （2） 4.6级标准载荷kN 3.20 4.52 8.24 13.1 19.0 25.9 35.3 55.1 79.4 126 184 4.6级抗拉强度最小kN 5.68 8.04 14.6 23.2 33.7 46.0 62.8 98.0 141 224 327 4.8级标准载荷kN 0.39 0.64 1.05 1.56 2.10 2.72 4.40 6.23 11.3 18.0 26.1 35.7 48.7 4.8级抗拉强度最小kN 0.53 0.87 1.42 2.11 2.85 3.69 5.96 8.44 15.4 24.4 35.4 48.3 65.9 5.8级标准载荷kN 5.40 7.64 13.9 22.0 32.0 43.7 59.7 93.1 134 5.8级抗拉强度最小kN 5.78 10.40 19.0 30.2 43.8 59.8 81.6 127 184 1、 标准载荷和抗拉强度是通过表1中的应力强度乘以螺纹应力面积来计算。 2、 应力面积=0.7854（D-0.9382P）2,D是螺纹公称直径（公制），P是螺纹节距（公制）。 表5B-标准载荷和抗拉强度值 公称螺纹直径和螺纹节距 M1.6x0.35 M2x0.4 M2.5x0.45 M3x0.5 M3.5x0.6 M4x0.7 M5x0.8 M6x1 M8x1.25 M10x1.5 M12x1.75 M14x2 M16x2 M20x2.5 M24x3 M30x3.5 M36x4 应力面积mm2 1.27 2.07 3.39 5.03 6.78 8.78 14.2 20.1 36.6 58.0 84.3 115 157 243 353 561 817 （2） 8.8级标准载荷kN 147 212 337 490 8.8级抗拉强度最小kN 203 293 466 678 9.8级标准载荷kN 0.83 1.35 2.20 3.27 4.41 5.71 9.23 13.1 23.8 37.7 54.8 74.8 102 9.8级抗拉强度最小kN 1.14 1.86 3.05 4.53 6.10 7.90 12.8 18.1 32.9 52.2 75.9 104 141 10.9级标准载荷kN 11.8 16.7 30.4 48.1 70.0 95.4 130 203 293 466 678 10.9级抗拉强度最小kN 14.8 20.9 38.1 60.3 87.7 120 163 255 367 583 850 1、 标准载荷和抗拉强度是通过表1中的应力强度乘以螺纹应力面积来计算。 2、 应力面积=0.7854（D-0.9382P）2,D是螺纹公称直径（公制），P是螺纹节距（公制）。 7 Marking 标识
7.1 Bolts and Screws—Slotted and cross-recessed screws of all sizes and other screws and bolts of sizes smaller than M5 need not be marked. All other bolts and screws of sizes M5 and larger shall be marked permanently and clearly to identify the property class and the manufacturer. The property class symbols shall be as given in Table 6; the symbol for the manufacturer’s
identification shall be at his option. Markings shall be located on the top of the head of bolts and screws, and may be either raised or depressed at option of the manufacturer. Alternatively, for hex head products, the markings may be indented on the side of the head.
螺栓和螺钉- 所有尺寸的开槽和十字槽螺钉，尺寸小于M5的其他类别螺钉、螺栓不用标识。其他类别的螺栓、螺钉，尺寸≥M5需标记永久性标识，标识包括性能等级和制造厂商代码。性能等级符号参照表6；制造商符号按制造商己有标识。标识去标记在螺栓和螺钉的头部顶端，标记可凸可凹，制造商自行决定。或者，六角头产品的标识可打在头部侧边。
Property class marking shall conform to Table 7. 性能等级标识须符合表7规范。
Metric bolts and screws shall not be marked with radial line symbols. 公制螺栓、螺钉不能使用辐射线进行标识。
7.2 Studs—All studs of sizes M5 and larger shall be marked permanently and clearly to identify the property class. The symbols used shall be as given in Table 6. Markings shall be located on the extreme end of the stud, and may be raised or depressed at the option of the manufacturer. For studs with an interference fit thread, the markings shall be located at the nut end. Studs of sizes smaller than M12 may be marked using the property class symbols given in Table 6.
螺柱- 尺寸≥M5的所有螺柱须打上清晰可见的、永久性的标识。标识符号见表6。标识位置螺柱末端，字体可凸可凹。对于过盈配合螺纹的螺柱，标记位于螺母装配端。尺寸小于M12的螺柱，性能等级标记符号可采用表6。 表6-性能等级标识符号 等级 4.6 4.8 5.8 8.8(1) 9.8(1)(2) 10.9(1) 螺栓、螺钉、螺柱尺寸≥M5性能等级符号 4.6 4.8 5.8 8.8 9.8 10.9 螺柱可选标识符号，M5≤尺寸≤M11 。 + 1、 低碳马氏体钢产品标识须在等级符号数字下加下划线。 2、 和组件一样加工的无垫片产品，材料选于表2允许的含碳钢，等级标识9.8须在数字之间加一个倒转的T:如9^8。 表7-性能等级标识 螺栓、螺钉尺寸 mm 符号高度mm M5到M6 1.5min M8到10 2.3min M12到M14 3.2min ≥M16 4.0min 8 Notes 注
8.1 Marginal Indicia — The change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report.
边缘标记-在左边的更改栏（1）是为方便使用者定位此版本哪些地方对旧版进行了修订。文件标题左边符号（R）标识此文件进行了完整的修订。
Rationale—The change to this document is because SAE J1216 has been cancelled. The referenced document is now ASTM F 606M. Also in Table 4, the symbol Q was removed.
理论说明-此文件的变更是因为SAE J1216标准已被取消。参考文献已变更为ASTM F 606M。所以表4中，符号Q也去掉了。
Relationship of SAE Standard to ISO Standard—Not applicable. SAE 标准和ISO标准之间的关系-不适用。
Application—This SAE Standard covers the mechanical and material requirements for eight property classes of steel, externally threaded metric fasteners in sizes M1.6 through M36, inclusive, and suitable for use in automotive and related applications.
适用性- SAE标准涵盖了8个性能等级钢材、尺寸M1.6到M36（含）外螺纹公制紧固件的机械性能和材料要求，适用于汽车行业及相关行业。
Products included are bolts, screws, studs, U-bolts, preassembled screw and washer assemblies (sems), and products manufactured the same as sems except without washer.
产品包括螺栓、螺钉、螺柱、U型螺栓、预装配螺钉和垫片组件以及和组件一样机加的无垫片产品。
Products not covered are tapping screws, thread-rolling screws, and self-drilling screws. Mechanical and material requirements for these products are covered in other SAE documents. 产品不包括自攻螺钉、自挤螺钉、钻尾螺钉。这些产品的机械性能与材料要求包含在SAE另外的标准中。
The term stud as referred to herein, applies to a cylindrical rod of moderate length, threaded on either one or both ends or throughout its entire length. It does not apply to headed, collared, or similar products which are more closely characterized by requirements shown herein for bolts. 螺柱这里是指适用于中等长度圆柱杆，螺纹在一端有或两端都有，或全螺纹的产品。它并不适用于有头的、带定位的或类似于本文中所要求的螺栓特性近似的产品。
For specification purposes, this document treats U-bolts as studs. Thus, wherever the word studs appears, U-bolts is also implied. U-bolts covered by this document are those used primarily in the suspension and related areas of vehicles. (Designers should recognize that the U configuration may not sustain a load equivalent to two bolts or studs of the same size and grade; thus actual load-carrying capacity of U-bolts should be determined by saddle load tests.)
为了规范，本标准将U型螺栓是为螺柱。因此，本文中涉及到的螺柱要求，U型螺栓同样适用。本文所提及的U型螺栓是使用于车辆悬挂位置或相关位置的产品。（设计者应了解到同样尺寸、等级的U型螺栓与两个螺栓或螺柱的载荷是不相等的，因此，U 型螺栓的实际承载应以鞍型荷重测试方法来判定。
Reference Section 参考文献
SAE J121M—Decarburization in Hardened and Tempered Metric Threaded Fasteners 公制螺纹紧固件淬硬和回火的脱碳要求
SAE J123—Surface Discontinuities on Bolts, Screws, and Studs in Fatigue Applications 用于疲劳载荷的螺栓、螺钉及螺柱的表面不连续性
SAE J429—Mechanical and Material Requirements for Externally Threaded Fasteners 外螺纹紧固件的机械性能及材料要求
SAE J1061—Surface Discontinuities on General Application Bolts, Screws, and Studs 通用螺栓、螺钉及螺柱的表面不连续性
ASTM A 307—Specification for Carbon Steel Bolts and Studs, 60 000 psi Tensile 抗拉强度 60kpsi碳钢螺栓、螺柱的相关规范要求
ASTM A 354—Specification for Quenched and Tempered Alloy Steel Bolts, Studs, and Other Externally Threaded Fasteners
淬火和回火合金钢螺栓、螺柱和其他外螺纹紧固件的标准规范
ASTM A 449—Specification for Quenched and Tempered Steel Bolts and Studs 淬火和回火钢制螺栓及螺柱的标准规范
ASTM F 606M—Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, and Rivets
测定外螺纹及内螺纹紧固件、垫圈及铆钉的机械特性的试验方法(米制) ASME B18.2.1
六角方型美制螺栓螺钉标准规范
Developed by the SAE Fastener Committee SAE紧固件委员会发布
翻译：夏目隐花( BETTY) 2016.08.17