Hengfei Fastener Co., Ltd. produces a wide range of nuts, including:
- Castle Nuts (Galvanized)
- Slotted Nuts
Product Specifications:
- Standard: DIN935
- Grade: 6, 8
- Mark: None
- Size: M4-M100
- Finish: Galvanized
- Material: Carbon Steel
- Delivery Time: Typically 30-40 Days
- Trade Assurance: Protects Your Order
- Package: Cartons and Pallets or Customized
Explore More Products:

Nuts Range:
M3-M20
Materials Available: Carbon Steel, Alloy Steel, Stainless Steel, Brass
Surface Treatments: ZP, Phosphating, HDG, Mechanical Galvanized, Powder Coating, Dacromet
Types of Nuts: U Nuts, Hexagon Nuts, Hexagon Weld Nuts, Hexagon Flange Nuts (Plain & Serrated), Square Weld Nuts, Castle/Slotted Nuts, Nylon Insert Nuts, Domed Cap Nuts, Square Nuts, T-Nuts, Lock Nuts, and Special Nuts as per Customer Requirements.
Standards | DIN, ASME, SIO, JIS, BS, NFE, GOST |
Size Range | Diameter: M5 - M64; 1/4" - 2 1/2"; Length: 10-1000mm; 1/2" - 40" |
Materials | SS304, 316, 316L, 316LN, 316Lmod, 316Ti, 317L, 317LN, 321, 310S, 904L, 254SMO, AL-6XN, 1.4529 |
Duplex: 2205/2507 | |
Hastelloy: C4, C22, C276, C2000, B2, B3, G3, G30, Hastelloy X | |
Inconel: 600, 601, 617, 625, 690, 718, 725, X750 | |
Incoloy: 800/800H/800HT, 825, 901, 925, 926 | |
Monel: K500, 400 | |
Titanium Alloy: GR2/5/7 | |
Urea Steel: 724L, 725LN | |
Alloy: 20, 28, 31, 286, 80A (Nimonic 80A) | |
Product Range | Bolt, U Bolt, Studs, Threaded Bar, Nut, Washers, Machining Parts |
Marking | Custom Marking (OEM) According to Client’s Requirements |
MOQ | Washers: 100 pcs, Nuts: 50 pcs, Bolts and Studs: 10 pcs |
Sample Policy | Free Samples if in Stock, Buyer Pays Freight |
Sample Time | About 7-10 Days |
In Stock Items | SS304/316 Bolt, Nut, and Washer M6-20 |
DIN7967 Pal Nut M6-20 | |
Titanium Alloy Bolt, Nut, and Washer M6-20 | |
Other Sizes May Also Be Available | |
One Stop Purchase | We Help You Achieve One-Stop Purchasing. Our Sales Team Has Over 20 Years of Trading Experience. |
Q: Are you a trading company or a manufacturer?
A: We are a factory. We also have an independent foreign trade sales department based in Qingdao City.
Q: How long is your delivery time?
A: If the goods are in stock, it usually takes 5-10 days. If not in stock, it takes about 15-20 days, depending on the quantity.
Q: Do you provide samples? Are they free or paid?
A: Yes, we can provide samples for free if available, but the buyer is responsible for the shipping cost.
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