JB/T 58651.4-1999 Fastener Product Quality Classification Nut JB/T58651.4-1999 Standard Download Unzip Password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T58651.1~58651.14—1999
JB/T58652—1999
Quality classification of fastener products
(Internal use)
Published on December 3, 1999
National Machinery Industry
Implementation on June 1, 2000
1 Scope
Mechanical Industry Standard of the People's Republic of China
Quality classification of fastener products Nuts
(Internal use)
JB/T 58651,4-1999
5865144
This standard specifies the principles and requirements for the quality classification of parent products produced in accordance with national standards and industry standards. Other standards can be used for reference in the classification of the quality of products produced by the same industry. This standard adopts three-level classification, namely superior products, first-class products, and qualified products. This standard is applicable to the batch of single-specification products received according to GB9. All the sizes used in this standard are consistent with the current nut standards. Reference standards
The provisions contained in the following standards have become the provisions of the standards through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Offices using this standard should explore the possibility of using the latest versions of the following standards: GBT901985
GR.T 214.2--1996Www.bzxZ.net
GB.T 309R.2—1982
(confirmed in 1988)
GB.T3098.4—-1986
GB.T3098.6—1986
GD.T 3934—1983
GBT $7792—1986
JB/T 87K8—1998
JB58651.1—1999
3Nouns, terms and calculation formulas
Fastener acceptance inspection, marking and packaging
Pu standard calipers Vernier calipers
Fastener mechanical properties nuts
Slotted nut
Fastener mechanical properties
Fastener mechanical properties
Fastener mechanical properties
Stainless steel nuts, nut factories, ethylene nuts General frequency efficiency specifications|| tt||Prohibited parts surface defects
World…Requirements
General rules for fastener product quality classification
Defect grade, sensitivity, such as investment value and unit potential, the principle of the standard and the unit defect grade. The formula for the first 511 regulations A, spot check items, sampling plan, fast defect grade and supervision of nut products, sampling plan, defect grade and weighted value are as specified in the table, 5 grade standards
Nut product quality standards are as specified in Table 2. 6 Inspection methods
Nut product inspection hall is as specified in Table 3, approved by the State Machinery Industry Bureau on December 34, 1999 2 (HH0-06-01 implementation
In the project
Against the edge width 3
Negative width
JBT 586S1.4—1999
Butterfly pattern specification [Mean diameter and diameter of thread] Burning specification [Single medium and light] Burning specification [Mixed products]
Screw pit diameter
High pressure m
Opening width
Partial opening seat
Support surface diameter area
Edition treatment accuracy m
And carry the symmetry of the thread axis
Flatness of the nut support surface and the coal effective axis
Type II surface defect
-Natural table But the lack of danger
Key performance
Non-destructive inspection
Carbon reduction control
Quality city
Compatible products
First-class products
Superior products
Qualified products
· Products
Fake products
Suppress the brightness
Fill in UB/I3098.2 or GB/T3098.4 or GB/T3098.6 fixed A
Single lack of standard pool
0.133 Fst.335
0. 169 F 0.424
Oil Li said day
width on side 5
width on diagonal
depth this common now! Screw effect
making medium and large diameter!
flame thread stop gauge (single diameter of screw thread
;
miscellaneous products
scorpion minor diameter,
nut height
lower dragon degree%
support H amount d
flange point d
vibration control high waste m
opening the thread axis
to the degree
thread axis weight
a type of surface age depression
a fire installation and missing
Kai pregnancy servant
JB /TS8651.4—1999 (21 special inspection boundary 2! Special inspection products through special plug effect stop screw wave rate gauge smooth case gauge 12) special caliper gauge non-standard, now squeezed GB/T1214.2 GB:T1214.2 GB/T3934 (design scale should be included in the report, the range is still within the measurement, in the treatment of high quality from the beginning to the maximum, the room gauge should be able to pass the teacher (excluding the effective short part of the lock screw, GB3934 GS/T 3934
GHT12142
:1) Caliper R
2 Time gauge
() Caliper
(21 Special caliper
-with screw
bar, vertical gauge
GB/T1214.2
GBT1214.2
GBT1214.2
GB/T52142
GH/T 1214.2
3BT8788
Use your hand to remove the visible part of the mold at both ends of the customer gauge, and the sea is not completely clear. (Control back and hope to see the juice! , for the small Ding 3 this period of small, also can not be fully suitable for the grass and the test and the important letter
the mother's texture, the composition
benefit through the plan, does not include the A sales quality screw responsible for the effective force of the public: : stop the production of the current dismantling of the media at both ends of the machine effect in line with the view to let (1 month 2 type mother two need to be Z+2, 0.5m.. (2 net 50.8 code:
Z,+Z,*0.65mm
【3) the cumulative thickness and the file system from the support The bracket t at one end of the surface: 2e=0.350
【4】The sum of the two dimensions of the explosion: 2+,53”First measure the approximate starting point and the integral point, and then measure the distance between the inner points
Put the cross-shaped nut into the special thread, and the impact should be eliminated: parallel hole
According to GB/T.5779.2
According to GL/T3098.2 or GD/T3098.4 or GL30986, now with 23
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