Description
The 316 Stainless Steel GB93 Split Lock Washer is a high-performance, helical spring washer designed to provide a positive locking action in bolted assemblies. Conforming to the Chinese National Standard (GB93), this fastener is specifically engineered to resist the loosening of nuts and bolts caused by vibration, dynamic loads, and thermal expansion.
Manufactured from premium 316 Stainless Steel, this Split Lock Washer offers a substantial upgrade in corrosion and oxidation resistance over standard steel or 304-grade stainless steel. Engineered for marine, chemical, construction, and heavy industrial applications, the stainless steel washer is a reliable component in critical fasteners assemblies where joint integrity and corrosion resistance are essential.
Features & Benefits
- Superior 316 Stainless Steel Material: Contains molybdenum, providing excellent resistance to pitting and crevice corrosion. It is the industry standard for marine and offshore applications where 304-grade steel would fail.
- Active Locking Function: The helical split-ring design creates constant spring tension against the fastener head and the mating surface. This "spring" effect maintains bolt tension and increases friction to prevent loosening under heavy vibration.
- Enhanced Durability: Highly resistant to wear, deformation, and rust. These fasteners maintain their structural integrity and spring rate even when exposed to harsh chemicals or extreme weather conditions.
- Precision Manufacturing & Finish: Features a smooth, uniform surface with high concentricity and dimensional accuracy. This ensures a fine fit with GB-standard bolts and even load application across the assembly.
Specification
|
Specification (large diameter of thread) |
d1 |
s（b） |
h |
The weight of every 1000 steel products is ≈kg |
||||
|
min |
max |
nominal |
min |
max h |
min |
max h |
||
|
2 |
2.1 |
2.35 |
0.5 |
0.42 |
0.58 |
1 |
1.25 |
0.2 |
|
2.5 |
2.6 |
2.85 |
0.65 |
0.57 |
0.73 |
1.3 |
1.63 |
0.3 |
|
3 |
3.1 |
3.4 |
0.8 |
0.7 |
0.9 |
1.6 |
2 |
0.6 |
|
4 |
4.1 |
4.4 |
1.1 |
1 |
1.2 |
2.2 |
2.75 |
0.15 |
|
5 |
5.1 |
5.4 |
1.3 |
1.2 |
1.4 |
2.6 |
3.25 |
0.26 |
|
6 |
6.1 |
6.68 |
1.6 |
1.5 |
1.7 |
3.2 |
4 |
0.47 |
|
8 |
8.1 |
8.68 |
2.1 |
2 |
2.2 |
4.2 |
5.25 |
1.07 |
|
10 |
10.2 |
10.9 |
2.6 |
2.45 |
2.75 |
5.2 |
6.5 |
2.05 |
|
12 |
12.2 |
12.9 |
3.1 |
2.95 |
3.75 |
6.2 |
7.75 |
3.49 |
|
14 |
14.2 |
14.9 |
3.6 |
3.4 |
3.8 |
7.2 |
9 |
5.47 |
|
16 |
16.2 |
16.9 |
4.1 |
3.9 |
4.3 |
8.2 |
10.25 |
8.08 |
|
18 |
18.2 |
19.04 |
4.5 |
4.3 |
4.7 |
9 |
11.25 |
10.91 |
|
20 |
20.2 |
21.04 |
5 |
4.8 |
5.2 |
10 |
12.5 |
14.59 |
|
22 |
22.5 |
23.34 |
5.5 |
5.3 |
5.7 |
11 |
13.75 |
20.11 |
|
24 |
24.5 |
25.5 |
6 |
5.8 |
6.2 |
12 |
15 |
26.06 |
|
27 |
27.5 |
28.5 |
6.8 |
6.5 |
7.1 |
13.6 |
17 |
37.64 |
|
30 |
30.5 |
31.5 |
7.5 |
7.2 |
7.8 |
15 |
18.75 |
50.73 |
|
33 |
33.5 |
34.7 |
8.5 |
8.2 |
8.8 |
17 |
21.25 |
71.96 |
|
36 |
36.5 |
37.7 |
9 |
8.7 |
9.3 |
18 |
22.5 |
87.47 |
|
39 |
39.5 |
40.7 |
10 |
9.7 |
10.3 |
20 |
25 |
117.4 |
|
42 |
42.5 |
43.7 |
10.5 |
10.2 |
10.8 |
21 |
26.25 |
138.7 |
|
45 |
45.2 |
46.7 |
11 |
10.7 |
11.3 |
22 |
27.5 |
162.3 |
|
48 |
48.5 |
49.7 |
12 |
11.7 |
12.3 |
24 |
30 |
206.7 |
FAQ:
Q1: What is the difference between GB93 and DIN 127 standards?
A: While both are helical spring washers, GB93 is the Chinese national standard, and DIN 127 is the German standard. They are very similar in function and appearance, but they may have slight variations in thickness and outer diameter tolerances. Always verify your project’s technical specifications to ensure the correct standard is used.
Q2: Why is 316 stainless steel better than 304 for a Split Lock Washer?
A: 316 stainless steel includes 2% molybdenum, which makes it significantly more resistant to corrosion from chlorides (like seawater and de-icing salts). If your assembly is located near the coast or in a chemical plant, a 316 stainless steel washer is required for long-term safety.
Q3. Does a split lock washer prevent all types of loosening?
A: Split Lock Washer is highly effective against loosening caused by vibration and thermal cycling. However, for assemblies subject to extreme rotation or critical safety loads, engineers often combine these with thread-locking compounds or lock nuts for redundant security.
Q4: Is the GB93 washer reusable?
A: Lock washers work by "biting" into the mating surfaces. Upon removal, the sharp edges of the split may wear down, and the spring tension may decrease. For maximum safety in industrial applications, it is recommended to replace the washer whenever the joint is disassembled.
Q5: Can this washer be used with all metric fasteners?
A: It is designed for metric systems in compliance with GB93 standards. Proper sizing should match the bolt or screw diameter.
