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GB/T 6188-2017: Hexalobular internal driving feature for bolts and screws
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 6188-2017	English	199	Add to Cart	3 days [Need to translate]	Hexalobular internal driving feature for bolts and screws
GB/T 6188-2008	English	399	Add to Cart	3 days [Need to translate]	Hexalobular internal driving feature for bolts and screws
GB/T 6188-2000	English	399	Add to Cart	3 days [Need to translate]	Hexalobular internal driving feature for bolts and screws
GB/T 6188-1986	English	RFQ	ASK	3 days [Need to translate]	Hexagon lobular for fasteners--Type T

GB/T 6188-2017: Hexalobular internal driving feature for bolts and screws

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Hexalobular internal driving feature for bolts and screws ICS 21.060.10 J13 National Standards of People's Republic of China Replacing GB/T 6188-2008 Bolts and screws with hexagonal flower-shaped (ISO 10664.2014, IDT) 2017-12-29 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the provisions given in GB/T 1.1-2009. This standard replaces GB/T 6188-2008 "hexagonal bolt and screw-shaped", compared with GB/T 6188-2008, the main changes as follows. --- Increased slot number .1 ~ 5,7,9,27 and the corresponding basic dimensions, the depth of the allowable insertion f, the regulatory limit size, limit gauge limit Inch, cylindrical gauge diameter size (Table 1 ~ Table 5). This standard uses the translation method identical with ISO 10664.2014 "hexagonal bolt and screw-shaped flower." This standard is proposed by the China Machinery Industry Federation. This standard by the National Standardization Technical Committee fasteners (SAC/TC85) centralized. This standard is drafted by. Machine Productivity Promotion Center. Participated in the drafting of this standard.Dongfeng Commercial Vehicle Co., Ltd. Dongfeng Commercial Vehicle Technology Center, Dongfeng Automobile Fasteners Co., Ltd., machinery Industrial General Parts Product Quality Supervision and Testing Center. This standard by the National Standardization Technical Committee fasteners responsible for the interpretation. This standard replaces the standards previously issued as. --- GB/T 6188-1986, GB/T 6188-2000, GB/T 6188-2008. Bolts and screws with hexagonal flower-shaped

1 Scope

This standard specifies the shape of the hexagonal flower-shaped bolts and screws, basic dimensions and measurement methods. Bolts or screws with hexagonal flower-shaped profile curve in line with the provisions of Table 3 to Table 5 to determine the gauge. Appendix A gives the outline of the drawing Curve reference information. This standard applies to hexagonal flower size inspection, does not apply as a manufacturing standard.

2 basic size

The hexagonal flower shape and basic dimensions are shown in Figure 1 and Table 1. Description. Counterbore. C ≤ 0.13mm, suitable for slot ≤ No.15; c≤0.25mm, suitable for slot number > No.15; Insert depth t see related product standards. a See Table 2. NOTE The inner hexagonal flower bottom outline outside the measurement area is to be determined by the manufacturer. Figure 1 basic dimensions ...