HB 0-4-1974 Bolt and screw head recess

HB 0-1-1974 The threaded portion of the bolt is positioned within the nut and the interlayer HB 0-2-1974 Thread locking methods for preventing loosening \nHB 0-3-1974 Marking of threaded parts HB 0-9-1974 Hexagon part's insurance hole HB 0-10-1974 board minimum radius of bend HB 0-11-1974 Enhancing the trough HB 0-12-1974 Metal structure lightening hole HB 0-13-1974 Enhance nesting area HB 0-14-1974 "Lateral reduction hole" HB 0-15-1974 The 60° bent edge reduced hole is made by molding with rubber HB 0-16-1974 Right angle relief hole HB 0-17-1974 Rubber-molded convex flange height HB 0-18-1974 The height of the concave bending edge of rubber pressing HB 0-19-1974 opening bend-up HB 0-20-1974 wrinkle-edged HB 0-23-1974 Frame gap classification for profiles and trusses HB 0-24-1974 The gap in the angle-shaped profile truss bars HB 0-25-1974 Gusset Plate Gap for Gammadion-shaped Materials HB 0-26-1974 The gap in the angle-shaped profile of the truss bars HB 0-27-1974 The gap in the angle-shaped metal frame crossbars HB 0-28-1974 Angular Beam Rafter with Gap HB 0-29-1974 T-bar bracket with a gap HB 0-30-1974 Notch of channel-shaped profiles truss bar HB 0-31-1974 Slot-shaped angle iron members have gaps HB 0-32-1974 Gap in channel-shaped truss bars HB 0-33-1974 Gap in channel-shaped truss bars HB 0-34-1974 Z-shaped metal truss members with gaps HB 0-35-1974 Extruded profiles tilt angle limit value HB 0-45-1974 Spreadsheet for Length Calculation HB 0-49-1974 Frame and Outline HB 0-51-1974 The center-to-center distance tolerance of fasteners and locating pin holes HB 0-60-1974 Elastic self-locking spiral groove HB 0-63-1974 The maximum torque required for screws with diameters ranging from 5 to 33mm HB 0-65-1974 Welding end of tube shrinkage-fit

HB 0-4-1983