ASME B18.2.6-2010 pdf download

ASME B18.2.6-2010 pdf download.Fasteners for Use in Structural Applications.
In October of 1961, Subcommittee 2 appointed a subgroup to review all product standards for square and hexagon bolts, screws, and nuts, and to recommend simplifications which would be compatible with technical, production, and distribution advances that had occurred over the prior several years. The subgroup presented its recommendations at a meeting of Subcommittee 2 in October 1962. It was agreed that the internally and externally threaded products should be published in separate documents as suggested, and draft proposals for each were completed. The proposed revision for square and hex bolts and screws incorporated the following subgroup recommendations: consolidation of hexagon head cap screws and finished hexagon bolts into a single product, consolidation of heavy semifinished hexagon bolts and heavy finished hexagon bolts into a single product, elimination of regular semifinished hexagon bolts, new length toleranc- ing values for all bolts and screws, documentation of a positive identification procedure for determining whether an externally threaded product should properly be designated a bolt or a screw, and an abbreviated and purified set of product nomenclature reflecting application of the identification procedure. 1.1 Scope 1.1.1 This Standard covers the complete general and dimensional data for five products in the inch series recognized as an American National Standard. These five structural products include (a) Heavy Hex Structural Bolts: ASTM A 325 and ASTM A 490 (b) Heavy Hex Nuts: ASTM A 563 and ASTM A 194 (c) Hardened Steel Washers; Circular, Circular Clipped, and Beveled: ASTM F 436 (d) Compressible Washer-Type Direct Tension Indicators: ASTM F 959 (e) Twist-Off-Type Tension Control Structural Bolts: Heavy Hex and Round: ASTM F 1852 and ASTM F 2280 1.1.2 The inclusion of dimensional data in this Standard is not intended to imply that all products described herein are stock production sizes. Consumers should consult with suppliers concerning lists of avail- able stock production sizes. 1.2 Dimensions All dimensions in this Standard are in inches, unless stated otherwise, and apply to an unplated or uncoated product. When plating or coating is specified, the fin- ished product dimensions shall be as agreed upon between supplier and purchaser. Symbols specifying geometric characteristics are inaccord withASME Y14.5. 1.3 Options Options, where specified, shall be at the discretion of the supplier, unless otherwise agreed upon by the purchaser with the manufacturer or distributor. 1.4 Terminology For definitions of terms relating to fastener dimen- sional or component features used in this Standard, refer to ASME B18.12. 1.5 Referenced Standards Unless otherwise specified, the referenced Standard shall be the most recent issue at the time of order place- ment. The following is a list of publications referenced in this Standard. ASME B1.1, Unified Inch Screw Threads (UN and UNR Thread Form)
ASME B1.3, Screw Thread Gaging Systems for Dimensional Acceptability — Inch and Metric Screw Threads (UN, UNR, UNJ, M, and MJ) ASME B18.2.1, Square and Hex Bolts and Screws (Inch Series) ASME B18.2.2, Square and Hex Nuts (Inch Series) ASME B18.2.9, Straightness Gage and Gaging for Bolts and Screws ASME B18.12, Glossary of Terms for Mechanical Fasteners ASME B18.18.2, Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners ASME B18.24, Part Identifying Number (PIN) Code System Standard for B18 Fastener Products ASME Y14.5, Dimensioning and Tolerancing Publisher: The American Society of Mechanical Engi- neers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 (www.asme.org) ASTM A 194/A 194M, Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service or Both ASTM A 325, Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength ASTM A 490, Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength ASTM A 563M, Carbon and Alloy Steel Nuts [Metric] ASTM B 695, Coatings of Zinc Mechanically Deposited on Iron and Steel ASTM F 436, Hardened Steel Washers ASTM F 788/F 788M, Surface Discontinuities of Bolts, Screws, and Studs ASTM F 812/F 812M, Surface Discontinuities of Nuts, Inch and Metric