GB-T 16674.2 Small Hexagon Head Flange Bolts
Product: GB-T 16674.2 Small Hexagon Head Flange Bolts-Fine Pitch Thread
Property Class:4.6,4.8,5.6,5.8,8.8,10.9,12.9,
A2-70, A4-70,A4-80
Finish:Zinc Plating（Yellow Zinc, Zinc Blue, Rinse Color), Black, Phosphate & Oil, Zinc Phosphate, Hot-dip Galvanized(HDG),Dacromet, Geomet
Material:Steel
Export country: USA, Japan, Australia, Europe and so on
Support customer customization
GB/T 16674.2 is a standard for fine-threaded, small series hexagon head flange thick-stem bolts.
These bolts have a hexagonal head and flange face. The flange face increases the contact area between the bolt and the connecting piece, providing better support and stability. Additionally, the fine thread design allows the bolt to provide a more even load distribution when tightened, reducing stress concentrations.
Pictures
Product drawing
Product Specification
Size | M8 | M10 | M12 | M14 | M16 | |
P | 1.0 | 1.0/1.25 | 1.25/1.5 | 1.5 | 1.5 | |
a | max | 3.0 | 3.0 | 4.5 | 4.5 | 4.5 |
min | 1.0 | 1.0 | 1.5 | 1.5 | 1.5 | |
b | l<125 | 22 | 26 | 30 | 34 | 38 |
125<l<200 | 28 | 32 | 36 | 40 | 44 | |
l>200 | / | / | / | / | 57 | |
c min | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | |
da max | Type F | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 |
Type U | 10.0 | 12.5 | 15.2 | 17.7 | 20.5 | |
dc max | 17.0 | 20.8 | 24.7 | 28.6 | 32.8 | |
ds | max | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 |
min | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | |
dv max | 8.8 | 10.8 | 12.8 | 14.8 | 17.2 | |
dw min | 14.9 | 18.7 | 22.5 | 26.5 | 30.6 | |
e min | 10.95 | 14.26 | 16.50 | 19.86 | 23.15 | |
k max | 8.5 | 9.7 | 12.1 | 12.9 | 15.2 | |
kw min | 3.8 | 4.3 | 5.4 | 5.6 | 6.8 | |
lf max | 2.1 | 2.1 | 2.1 | 2.1 | 3.2 | |
r1 min | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | |
r2 max | 0.5 | 0.6 | 0.7 | 0.9 | 1.0 | |
r3 | max | 0.36 | 0.45 | 0.54 | 0.63 | 0.72 |
min | 0.16 | 0.20 | 0.24 | 0.28 | 0.32 | |
r4 | 5.7 | 5.7 | 5.7 | 5.7 | 8.8 | |
s | max | 10.0 | 13.0 | 15.0 | 18.0 | 21.0 |
min | 9.78 | 12.73 | 14.73 | 17.73 | 20.67 | |
v | max | 0.25 | 0.30 | 0.35 | 0.45 | 0.50 |
min | 0.1 | 0.15 | 0.15 | 0.2 | 0.25 | |
Support customer customization | ||||||
Some introduction about our company
Application
Jinan Star Company specializes in the production of fastener products. Our bolts, nuts and other products are widely used in machinery, railways, automobiles, construction, electrical, bridges, communications, firefighting and other industries.
Certification
Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification through the scientific management of leaders of various departments and the pursuit of high quality for bolts and other fasteners. In addition, Star Company's laboratory has obtained certification in 2017 and 2018. It passed the national CNAS certification in 2018, and in 2018 the company passed the European CE certification.
Workshop
The workshop of Jinan Star Fastener Co., Ltd. is the core area of the company's production and manufacturing, with advanced production equipment. The reasonable layout of the workshop and the scientific production process ensure the efficient production and high-quality output of fastener products.
Testing Equipment
Jinan Star Fastener Company attaches great importance to product quality and is equipped with a complete range of quality testing equipment, such as tensile testing machines, torque testers, metallographic microscopes, optical projectors, salt spray test chambers, coating thickness gauges, etc., for Detect the tensile strength and elongation of fastener products, and evaluate the mechanical properties of the products to ensure that every link from raw materials to finished products can be strictly controlled.
Production equipment
In order to meet the needs of different customers, the company has introduced a series of advanced production equipment, such as multi-station cold heading machines, thread rolling equipment, heat treatment equipment, shot blasting machines, sand blasting machines, electroplating lines and other surface treatment equipment, and fully automatic packaging equipment. These equipment not only improve production efficiency, but also ensure the consistency and stability of product quality.
Packing
Service
1. Product supply. Manufacturers can provide hexagonal flange bolts that meet the requirements according to the GB/T 16674.2 standard, including products of various sizes, specifications, and performance levels.
2. Customized production according to customer requirements. If the customer requires bolts of special size, material or performance level.
3. Provide bolt selection suggestions, installation guidance, usage instructions and other technical support to ensure customers use bolts correctly and safely.
4. Fast and accurate logistics and distribution services
5. If customers encounter any problems during use or need to repair or replace bolts, the manufacturer can provide after-sales service and technical support in a timely manner.
FAQ
1. Is the product produced according to standards?
Answer: We produce bolts in strict accordance with the GB/T 16674.2 standard and conduct strict quality inspections on the products to ensure that the product quality meets the standard requirements. At the same time, we use high-quality materials and advanced production processes to ensure that the bolts have excellent mechanical properties and reliability.
2. How to choose bolt specifications?
A: We can provide suitable bolt selection suggestions based on the customer's specific needs and application environment. Please provide customers with detailed connection requirements, material properties and other information so that we can recommend the most suitable bolt type and specification for you.
