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High Precision GB/T 802.3 Hex Flange Cap Nut - Carbon Steel Zinc Plated
Product Description
Standard:GB/T 802.3
The hex flange cap nut (also known as hexagonal flange cap nut) is a high-performance fastener integrating the functions of a hex nut, a flange washer, and a protective cap. Designed for industrial assembly and mechanical fastening, it features a hexagonal head for easy torque application, a integrated flange face (with serrations in most cases), and a closed cap-style top—combining reliability, anti-loosening performance, and corrosion protection in one component.
Core Structural & Functional Features
Hexagonal Head Design: The standard hexagonal shape enables compatibility with common tools (wrenches, sockets), ensuring efficient installation and disassembly even in confined spaces.
Integrated Flange Face: The built-in flange (a circular washer-like structure) eliminates the need for additional washers, increasing the contact area with the workpiece. Serrated flanges enhance anti-loosening performance by preventing rotation under vibration, making it ideal for dynamic load scenarios.
Closed Cap Style: The closed top seals the internal thread, protecting it from dust, moisture, debris, and corrosion—extending the fastener’s service life and maintaining connection integrity in harsh environments.
Application Scenarios:
Widely used in machinery manufacturing, automotive industry, electronic equipment, construction machinery, furniture assembly, and marine hardware. It is particularly suitable for scenarios requiring stable fastening, corrosion resistance, and thread protection—such as outdoor equipment, automotive components, and precision instruments.
Technical Specifications
d
M5
M6
M8
M10
M12
M16
M20
M24
P
coarse thread
0.8
1
1.25
1.5
1.75
2
2.5
3
fine thread
/
/
1
1
1.5
1.5
2
2
fine thread
/
/
/
1.25
1.25
/
1.5
/
dk
MAX
7.5
9.5
12.5
15
17
23
28
34
dc
MAX
11.8
14.2
17.9
21.8
26
34.5
42.8
46
e
MIN
8.79
11.05
14.38
17.77
20.03
26.75
32.95
39.55
h
MAX
9
11
14
18
22
30
32
36
MIN
8.64
10.57
13.57
17.57
21.48
29.48
31
35
m
MAX
5
6
8
10
12
16
20
24
MIN
4.7
5.7
7.64
9.64
11.57
15.3
18.7
22.7
SR
≈
3.75
4.75
6.25
7.5
8.5
11.5
14
17
s
MAX
8
10
13
16
18
24
30
36
MIN
7.78
9.78
12.73
15.73
17.73
23.67
29.16
35
t
≈
0.5
0.8
0.8
0.8
1
1
1.2
1.2
Packaging
Carton Packaging
Outer Cartonbox Packaging
Pallet Packaging
Bolts are packed in neutral packaging boxes, with standard quantities arranged in small cartons. The exact number of units per carton will be confirmed with the customer to align with their specific requirements. Customized packaging configurations are available upon request.
The small cartons are then consolidated into larger master cartons for secure transportation and storage. The quantity per master carton can be customized based on client specifications or aligned with standard logistical requirements.
The palletized units are securely wrapped with waterproof film and reinforced with packaging straps. Customer-specific shipping marks or labels are affixed to each pallet, ensuring clear identification and compliance with logistics requirements. This final packaging stage guarantees weather-resistant protection and stability during transportation.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2012
Total Annual:
5000000-6000000
Employee Number:
45~53
Ecer Certification：
Verified Supplier
Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work... Ningbo Yongbiao Fastener Manufacturing Co., Ltd. is located in Ningbo, the second largest port city in China. The factory is 50 kilometers away from Ningbo Port and can reach the sea freight warehouse in one hour, with very fast logistics. The company was founded in 2012 and after years of hard work...
