This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of ring groove nails and spiral groove nails. This standard applies to ring groove and spiral groove nails. This standard applies to ring groove and spiral groove nails. JB/T 6361.5-1992 Technical conditions for ring groove nails and spiral groove nails JB/T6361.5-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T 6361.5-1992
Technical conditions for ring groove nails and spiral groove nails
Published on July 15, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Technical conditions for ring groove nails and spiral groove nails
Subject content and scope of application
JB/T6361.51992
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of ring groove nails and spiral groove nails. This standard applies to ring groove and spiral groove nails. Reference standards
Technical requirements
General purpose low carbon steel wirebzxz.net
Fastener acceptance inspection, marking and packaging
Material and surface treatment are shown in Table 1.
3.2 The nail tip type and code are as follows:
Rhombus tip
-A type; conical tip
3.3 The nail tip angle α is shown in the figure.
α=30~45°
Standard number
Type B; Shaped tip
① No surface treatment, but rolling is required
② Galvanized passivation
③ Oxidation
α=30°~45%
The top surface of the nail head can be made into a mesh pattern, the type of which is determined by the manufacturer, and it can also be made into a smooth surface. 3.4
3.5 The shape and position tolerances are shown in Table 2. Table 2
Concentricity of nail head to nail rod axis
Roundness of nail head
Straightness of nail rod
@f=2IT15
T=2IT13
α45°
3.6 The nail head and other surfaces are not allowed to have surface defects such as cracks, flash, floating rust and bumps that affect use. Approved by the Ministry of Machinery and Electronics Industry on July 15, 1992 and implemented on January 1, 1993
Test method
4.1 Dimensions
Check with special calipers or universal measuring tools, roundness
JB/T 6361.51992
Measure 4 or more diameters of the circumference of the head of the measured piece with an outside micrometer, and 1/2 of the difference between the maximum and minimum values ​​is the measured value.
Coaxiality
Use a 0.02mm caliper to first measure the minimum distance between the main line of the nail rod and the outer circle of the nail head, and then measure the distance value of the relative aspect. 4.4 Straightness
Measure with an inspection platform and a feeler gauge.
4.5 Surface quality
Visual inspection.
Inspection rules
Inspection rules are in accordance with the provisions of GB90. Among them, the main size items and qualified quality levels are: a. Diameter specification d qualified quality level AQL=1.5; b Top diameter d, qualified quality level AQL=4.0; All other size items qualified quality level AQL=4.0. c.
Marking, packaging, transportation and storage
Marking, packaging, transportation and storage are in accordance with the provisions of GB90. Additional remarks:
This standard is proposed by the National Technical Committee for Standardization of Fasteners. This standard is under the jurisdiction of the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Mechanical Standardization Institute of the Ministry of Machinery and Electronics Industry.
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