bulge head drywall screws diameter covers #6 ,#7 ,#8 and #10 black or grey phosphate coated

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$0.001 - $0.10 / Piece | 5000 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Guangdong, China
Brand Name:
Model Number:
OEM are available
Supply Ability
Supply Ability:
3000000 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
Inner-Plastic Bag.Outer -Standard Carton Box;exported with pallet package,or according to customer's requirement.
Lead Time :
7-15 days

bulge head drywall screws diameter covers #6 ,#7 ,#8 and #10 black or grey phosphate coated 

Different head drive style and bulge head , diameter covers #6 ,#7 ,#8 and #10 , black or grey phosphate coated , AISI 1018 or 1022 material , HV550-800 case hardness , HV300-450 Core hardness , 0.08mm of carburizing depth .


Item NameAll kinds of screws
Drivephilips,phil-slot,pozi,hexsocket,six-lobe,square,triangle,slotted,torx,Y & Special security drive

1)      Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420

2)      Steel:C45(K1045), C46(K1046),C20

3)      Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58),C27200CuZn37), C28000(CuZn40)

4)      Bronze: C51000, C52100, C54400, etc

5)      Iron: 1213, 12L14,1215

6)      Aluminum: Al6061, Al6063 etc

7)      Carbon steel:C1006,C1010,C1018,C1022,C1035K,C1045

8)      Alloy steel: SCM435,C10B21,C10B33

Specification & Gauge M1 - M30
Surface Finishing(1) Zn- Plated (2) Ni-plated (3) Passivated (4) Tin-plated (5) Sandblast and Anodize (6) Chromate (7) Polish (8) Electro Painting (9) Black Anodize (10) Plain (11) Chrome plated (12) Hot Deep Galvanize(H. D. G. ) etc.
Heat Treatment(1)Tempering (2)Hardening (3)Spheroidizing (4)Stress Relieving.
Manufacture Process(1)Heading (2)washer assembly (3)Threading (4)Secondary machine (5)heat treatment (6)plating (7)Anti-slipping (8)Baking (9)QA (10)Package (11)Shipping
After sales serviceWe will follow up goods for every customer and help solve problem after sales.


1)     Petrochemical.

2)     Ship building.

3)     Chemical industry.

4)     Sugar industry.

5)     Automobiles



Advantage of  Our Products


1)       Manufacturing technical Springs, Screw, CNC parts,Metal Stamping since 2000

2)       Being a long time partner of the Automotive Industry

3)       Having experienced engineers and advanced equipments

4)       Providing high precision and quality products for you

5)       Passing ISO  9001:2008 certification

Business Conditions

Business Conditions

MOQSmall quantity for testing are available
TermsFOB Shenzhen /CFR /CIF
PaymentT/T 30 % deposit, 70% balance payment before shipment
Lead Time7-25 working days,it is depand on the order quantity
Sample AvailablityMaking sample within 7 days free of charge if we have existing tooling
Warranty 3 Years 




 Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 1-3 working days if the goods are in stock. or it is 7-25 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below


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