Square Neck Mushroom Head Black Oxide Bolts

• Material: Steel
• Type: Round Head
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 4.8, 6.8, 8.8, 10.9
• Model NO.: DIN 603
• Application: Machinery, Chemical Industry, Environmental, Building, Industry
• Finish: Plain
• Head Type: Mushroom
• Surface Treatment: Black Oxide
• Transport Package: Carton+Pallet
• Specification: M6-M100
• Trademark: ningbo-bolt
• Origin: Zhejiang, China
• Production Capacity: 100000 Piece/Pieces Per Month

Product Description

item	value
Finish	Plain
Material	Steel
Place of Origin	China
	Zhejiang
Model Number	DIN603
Standard	DIN
Material	Steel
Surface treatment	Black Oxide
Application	Industry
Head type	Mushroom

Ningbo Steel Bolt Co., Ltd - FAQ

Frequently Asked Questions

1. Are you a manufacturer or trading company?
   
   Ningbo Steel Bolt Co., Ltd is a manufacturer of fasteners with years of experience in producing Bolts, Nuts, Threaded Rods, and Washers in Ningbo, China.



2. Do you provide OEM/ODM services?
   
   Yes, Ningbo Steel Bolt Co., Ltd accepts OEM/ODM orders.



3. How do you guarantee quality?
   
   We have strict quality control processes from raw materials to finished products following the ISO9001 quality management system, ensuring all products are 100% qualified with lifetime warranty support.



4. How can I trust you?
   
   As a fasteners factory in China with a Gold membership on *** and Made in China, we have credit guarantees from *** Group. You can place orders directly through ***.



5. What about your pricing?
   
   We offer high-quality products at reasonable prices. Contact us for a quote.



6. How do you control quality?
   
   Our QC team inspects every production link for each batch of goods. We provide MTC and mill certificates upon completion.



7. Do you provide free samples?
   
   New customers can receive free samples for standard fasteners, with express charges covered by the client. Old customers receive free samples with express charges covered by us.



8. Do you accept small orders?
   
   Yes, we accept any size orders and maintain stock for various fasteners. Custom production is also available.



9. What is your delivery time?
   
   If in stock, we can deliver within 15 days. For larger quantities, delivery may take 25-35 days.



10. What is your packaging?
    
    Our standard packaging is 20-25kg per carton, with 36 or 48 cartons per pallet. Customized packaging with logos is available upon request.



11. What are your payment terms?
    
    We accept T/T, L/C, D/P for general orders, and Paypal or Western Union for small or sample orders.