This standard specifies hexagonal flange self-drilling and self-tapping screws with thread specifications of ST2.9 to ST6.3. GB/T 15856.4-2002 Hexagonal flange self-drilling and self-tapping screws GB/T15856.4-2002 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
CB/T15856.42002
This standard is followed by the national standard "Self-drilling and self-tapping screws\product series standard one. The series includes; ten-piece pan head white drill white tapping screw
a1GB/T15856.1-22
1:) G3/T 185.2-2302
c)GB/-5556,32002
d:GT 58E.4—2002
; Countersunk head self-drilling screws
Cross head self-drilling screws
Hexagonal flange self-drilling screws
GBT-595.5-2002
Hexagonal flange self-drilling screws
This standard is consistent with GB156.1-1995. The main specifications are as follows: Add ST2.9 (Table 1)
6) Add $14.13.515.5×16 (Table 1); Add 11u, 12 0, 130, 140, 150, 160, 170, 180, 190 and 200mm in length (Table 1). This standard replaces (B15556.[995, Appendix 1 of this standard) from the date of implementation. This standard was proposed by the China Machinery Industry Federation and is the National Technical Committee for Standardization of Fasteners. The responsible drafter of this standard is the Institute of Mechanical and Electrical Engineering. The main body of this standard is Ningbo Shijing Special Parts Co., Ltd. The previous versions of the standards replaced by this standard are GB/T 1.A56. 4—1933. 1 Scope National Standard of the People's Republic of China Hexagonal Flange Head Drilling Screws with Tapping Screws Hexagon Tungsten Flange Head Drilling Screws with Tapping Screws Lliread
GB/T15856.4—2002
Generation G15As5.42
This standard implements the modified version of ST2.S--5T6.3, 2 Referenced Standards
The following standards contain the texts, which become the general texts of this standard through reference in this standard: When this standard is used, the versions shown are all in effect. The standard department will make revisions, and the possibility of using the following versions of the standard will be considered when using this standard. G /0.2002 Fasteners collection standard 502000
G5.2-20 Fasteners marking and packaging
G237-Vortex reading parts marking method (e99196)
02002 Fasteners machine bottle performance self-drilling and self-tapping 6: GB, T5103.2002 Fasteners tolerance bolts, screws and nuts (ictIS75!-1.20) (+B: 522:-2003 Fasteners electrical mystery layer (IS0442:1999.117) 28 effect:
1! The actual and selected performance of the T work is determined according to 03, 1
The State General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China approved 1
2903-06-01 for implementation
Frequency effect welcome
iron steel standard due to
new thick product
nominal—x
requires
GB/T15856.4—2002
table size
property: the product has passed the risk record mark! The object should meet the requirements of "size". The maximum height of the east road is the height of the blood, the height of the garbage treatment, and the nominal length. To determine the nominal length, it is necessary to add the length specification of each demolition or decision seat SI5.5
5>50m, the main supply and demand must be specified, the supply specification is 1=5.60, 55.7).735.65.90.9.1c0.11012c,13c,1.c,15:,1sc,17c,13o..y0.209 mm2 added spicy effect to grams of meat
4 Technical records and reference standards
Machine cover and a. Work properties
Table of external treatment
Guide and package
5 Marking
5. The marking method is in accordance with GH/1237.
5.2 Marking example
GB/T15856.4-202
Table of technical works and European standards
Product grade
Not certified
GE/T HU3. JI
GHT b28
GB/T H9R. I
Quality requirements technology 20.1
GB/T 90. 1,GI/T 90. 2
Beam mosquito heat grid 5S3..Nominal length waste (=16m, zinc tinned hexagonal flange surface self-standing self-ignition calcium mark: self-tapping frequency GB/T_5856.4ST3.5×16
G6/T15856.4-2002bzxZ.net
Appendix
Standard Appendix)
Inspection of hexagon and flange
A, in order to determine the height of the hexagonal, to control the production degree, use and width of the opposite side are equal, the user and two light ring gauges are measured,
Ship A should be the hexagonal part and put it on the ten method,
The most standard B should be left with the top surface of the head multiplied by the axis of the bamboo. The two mother gauges should not be used.
Gauge
Note, W=theoretical angle degree
W. .. cl ns..
Table A1
Channel Efficiency Specifications
Quantity H
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