GB/T 9074.4-1988 Cross recessed pan head screws and spring washers and flat washers assemblies

GB/T 9074.4-1988 Cross recessed pan head screws and spring washers and flat washers assemblies GB/T9074.4-1988 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Cross pan head screw, spring
washer and flat washer assembly
Crassrecessed panhead srrew,slngle catgpraylock wusher end plaln washet assemhFiey theme wear
UDC621.882
CB80T4.4—
This standard specifies the combination of cross pan head screws, spring washers and flat washers with specifications of M3~M6. 2 Reference standards
BB1B Cross pan head end
G Ugly 44.1 End nails with 1-shaped
GB9074.26 Spring washers for combination
GH9074.24 Type drawing for assembly
GB6267 Operating thread fastening tools
Installation B1237 Marking method for fasteners
G Acceptance inspection, marking and installation of fasteners 3 Dimensions
The dimensions are shown in the figure below and I1.
National Machinery Industry Committee 198-046 approved 14www.bzxz.net
19890101 implementation
public expense:
GEe074.4-88
Note, the company can not handle the number of rules. The length of the construction is more than Zheng: a valid.
Technical case
Technical conditions non-technical 2 small mines
Other slow requirements
Delivery and quotation
·Table 2
To GR1
Hot cakes, etc. CSnY
tiH 907.26
Should be able to rotate when the figure does not
Except a and, other R countries
5 marking
5.1 marking method is in accordance with GB1237 regulations.
GB8074.4-88
5.2 Marking example
Marking of cross-block pan head screws with thread size = M, nominal length !-20mm, performance level 4.8, surface zinc-coated, spring washer and flattening ring assembly
Screw assembly
GB 9074.4M6 × 20
Attached explanation:
This standard is proposed by the Technical Committee for Standardization of Hardware. This standard is drafted by the National Standardization Institute of the Industrial Committee of the State Council. This standard is drafted by the National Standardization Institute of the Industrial Committee of the State Council.
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