This standard specifies cross recessed countersunk head self-drilling and tapping screws with thread specifications of ST2.9 to ST6.3. GB/T 15856.2-2002 Cross recessed countersunk head self-drilling and tapping screws GB/T15856.2-2002 Standard download decompression password: www.bzxz.net

jcs 21,c60.10
National Standard of the People's Republic of China
Self-drilling and self-tapping screws
Drilling srrews with tapping screw thread2002-12-05 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
2003-06-01 Implementation
GB/T15856.2-·2002 bzxZ.net
This standard is equivalent to the international standard 1S015482:19S9 countersunk head screw 3. This standard is the national standard "Self-drilling and self-tapping screws\Product Series This series includes: a) GB/T15856.1-2002 self-drilling nails with round head and cross-shaped head; b) GB/T15856.2-2002 self-drilling nails with cross-shaped head and cross-shaped head; c) GB/T15856.3-2002 self-drilling nails with cross-shaped head and cross-shaped head; g) GB/T15836.4-2002 self-drilling nails with hexagonal flange; e) GB/T15856.5-2002 self-drilling nails with hexagonal flange IS154X2 does not specify packaging technical requirements, this standard specifies them (Table 2). 1S015482 does not specify simplified labeling, this standard provides a simplified labeling example (5.2) in accordance with the simplification principle of GB/T1237. Compared with GH/15856.2-1905, this standard mainly changes the technical content. This standard replaces GE/T158:6.2-1995 from the date of implementation: This standard is issued by China Machinery Industry Corporation The product of the joint venture: the National Standardization Technical Committee of the National Standardization Committee. The drafting unit of the standard: the Institute of Mechanical Engineering. The drafting unit of this standard: Ningpi Zhongjing Special Fastener Co., Ltd. The version of the standard replaced by this standard is: R/715855.2-1095.
1 National Standard of the People's Republic of China
Cross recessed countersunk head self-drilling and tapping screws
Cmss recessed couitersunk bead drilling screwswlth npplg serew thread
GB/T15856.2—2002
eqv1So 15482:1999
#Gh/185t.2-1995
This standard specifies the modification requirements for the ten-point head with a drying effect of ST2.9~S16.3. 2 Reference standards
The following standards contain clauses that shall be used in conjunction with the references in this standard. The versions shown in this standard are valid at the time of publication. All standards are subject to change. The use of the latest version should explore the possibility of the following standards being updated. Same as item 26)
G3/T SC. 2 --2(02
Fastener marking and other equipment
GB/T944.11985 Palm + word (cqvIS) 4757:193) GB/1237—2000 Fastener marking method (q198991:1986) GB/T RO9R.11—2O0S
GB/T 3.03. I—2002
G15:5257.12002
GB/T5279—1982
GT/T 5280—2002
Tightening machine self-drilling self-tapping screws t)
Fastener tolerance welding inspection screws, screws and nuts (dl1S) 479-, 20001 fastener 1 piece electric scene (15 () 4042: 1999, IDT) sinking frequency head shape measurement (idt [0772: 1983) self-tapping end thread
.) station real part diameter working super connection/95.11 standard 1
People's Republic of China Soviet quality Quality Supervision, Inspection and Quarantine General Administration 2002-12-C5 approved 2
2003-0601 implementation
Cross brace
Frequent failure regulations
Re-silting
Actual value
Broadcast number N
Station planning Huangtian
People's Baoding
General people's insurance degree
GB/T15856.2—2002
The last expansion is completely submerged to the center of the support, 3> See GB/T b2Y5.
For the starting nominal length, the central layer degree is required
Disease·Buckle complete screw is relatively close to the support and within the distance. $T4.2
4 Technical symbols and reference marks
Cross abstract
Memorial and working properties
Surface treatment
Acceptance and packaging
5 Marking
5.1 Marking method is in accordance with GB/T1837,
5.2 Marking example
GH/T15856.2—2002
Table 2 Technical conditions and reference standards
Product grade
Without test treatment1
CB/I 3C28.11
GB/T 6280
GL/I 9:+, 1
GB/I ​​3CE,11
GB/T 31US.1
Electric lock technical requirements according to GLT5267.1
GB/T 90.1.CB;T X.2
Frequency pattern tree grid S13.5 nominal length (-16mm.H plastic fine, chain zinc passivation will cross block sink meaning white drill self-tapping width Ting standard; white attack frequency GBT15856.2ST3.5×16
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