A
Anonymous
Apr 16, 2026
Rating: 5/5
Excellent bulk value
Needed these for a deck project. The galvanization looks solid and helps prevent rust.
Description
Galvanized External Hex Bolt 4.8 Grade, GB30 Hex Bolt, 50 lbs Free Shipping
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Carbon Steel |
| Surface Treatment | Zinc Plated |
| Strength Grade | 4.8 |
| Head Style | External Hex |
| Standard | GB30 |
| Thread Type | Coarse Thread |
| Package Weight | 25 kg |
| Color | Silver |
| Thread Direction | Right-Handed |
| Application | Construction and Machinery |
5 reviews
A
Anonymous
Apr 13, 2026
Rating: 4/5
Heavy shipment
Great bolts but the box was very heavy. Product quality is good though.
A
Anonymous
Mar 09, 2026
Rating: 5/5
Strong and reliable
Grade 4.8 is perfect for general construction. No stripped heads during installation.
A
Anonymous
Mar 03, 2026
Rating: 5/5
Fast delivery
Arrived earlier than expected. Packaging protected the bolts well.
A
Anonymous
Feb 18, 2026
Rating: 5/5
Perfect fit
Threads are clean and match standard nuts perfectly. Will buy again.
5 FAQ
Q: Is the zinc coating thick?
A: The galvanization provides standard rust resistance for indoor and outdoor use.
Q: Are these metric sizes?
A: Yes, these follow metric dimensions according to GB30 standard.
Q: Are nuts included?
A: No, this listing is for bolts only. Nuts are sold separately.
Q: What is the head size?
A: Head size varies by diameter. Please check the specific size chart.
Q: Can I use these for wood?
A: Yes, they are commonly used for wood framing and structural connections.
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