Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws
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Product Highlights
- Wide Material Grades: Available in grades 4.8 to 12.9 including A2-70, A4-70, A4-80.
- Customizable Sizes: Standard sizes M3.5-M4.8 with non-standard options available upon request.
- Diverse Surface Treatments: Offers Zinc, Phosphate, and customized surface treatments for rust resistance.
- Multiple Standards Compliance: Meets DIN, GB, ANSI, BSW, JIS, and GOST international standards.
- Full Customization Support: Accepts ODM/OEM with flexible customization from designs and samples.
- ISO9001 Certified: Manufacturing process certified under ISO9001:2015 and BSCI standards.
- Fast Sample Availability: Samples are available for testing and quality verification.
- Versatile Application: Suitable for wood, sheet metal, plastic, and marine environments.
Product Attributes
- Customization
- Available
- Material
- Carbon Steel
- Type
- Countersunk Head
- Model NO.
- UNF-17
- Groove
- Cross
- Connection
- Common Bolt
- Head Style
- Hexagonal
- Standard
- DIN, GB, ANSI, BSW, JIS, GOST
- Grade
- 4.8, 5.8, 6.8, 8.8, 10.9, 12.9; A2-70,A4-70,A4-80
- Delivery
- Sea Freight, Air, Train, Express
- Certification
- ISO9001:2015, BSCI
- Sample
- Yes
- ODM/OEM
- Accept
- Transport Package
- Carton Boxes + Pallets
- Specification
- M3.5-M4.8
- Trademark
- UN
- Origin
- China
- HS Code
- 7318151001
- Production Capacity
- 700tons/Month
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws
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Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws -
Black Oxide Carbon Steel Flat Countersunk Head Drywall Screws
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Product Description
| Union Carbon Steel Self-Tapping Screws |
| Name |
| Drywall Screws |
| Material |
| Carbon Steel |
| Size |
| M3.5-M4.8 or non-standard as request&design |
| Length |
| 13mm-125mm or non-standard as request&design |
| Surface Treatment |
| Zinc/Phosphate, Customized |
| Quality |
| Sample Testing or Third-party Inspection |
| Origin |
| Made in China |
| Lead Time |
| Based on quantity |
Carbon steel is a versatile material used for making the wide array of screws that serve as vital fasteners in countless applications. Different screw types have evolved for specific uses, taking advantage of carbon steel's strength, machinability and low cost. Common carbon steel screw varieties include self-tapping, self-drilling, T17 timber, and resistant head.
Self-tapping screws have threads that cut into material as they are driven in, creating internal threads for securing into materials like plastics, sheet metal or wood.
Self-drilling screws combine drilling and tapping into one operation, fully eliminating any pilot hole requirement. Self-drilling screws provide fast assembly of overlapped metal sheets or other materials up to moderate thicknesses.
T17 screws are designed specifically for fastening into wood materials. They have a thinner shank and tapered shape for reducing wood splitting while providing holding power. T17s are commonly used in woodworking and construction projects.
Resistant screws have special head treatments to withstand specific exposure conditions. A range of coatings and surface treatments have been developed to make carbon steel screws rust-resistant for use in outdoor, marine and other demanding settings.
With the proper screw selection for the materials and conditions at hand, carbon steel screws provide an indispensable, cost-effective fastening solution.
| Carbon Steel Technical Details | |||||
| Types | Carbon content | ANSI | hardness Level | Application | character |
| low-carbon steel | 0.05-0.3% | C1010 | 4.8 | Used for general screws | relatively low tensile strength |
| C1018 | 4.8 | Used for Carburized screws or Thin screws with M4.0 diameter or less | |||
| C1022 | 5.8 | - | |||
| Medium-carbon steel | 0.3-0.6% | C1045 | 8.8 | - | good wear resistance |
| 35ACR | 10.9 | Used for thin screws with M4.0 diameter or less | |||
| 40ACR | 10.9 | Used for M4~M10 diameter screws | |||
| High-carbon steel | 0.6-1.0% | - | - | extremely strong yet more brittle high wear resistance |
|
| Ultra-high-carbon steel | 1.25-2.0% | - | - | can be tempered to great hardness Used for special purposes |
|
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2432432". Items marked "
" are certified.
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Company Profile
Established in the early 2000s, Union Hardware began as a manufacturer and distributor of fasteners and hardware tools. In 2023, we officially consolidated into a globally focused professional hardware exporter. Our expansive product range includes photovoltaic fasteners, stainless steel fasteners, highly corrosion-resistant carbon steel fasteners, and a wide selection of hand tools (Mechanic Tools, Fastening Tools, Measuring Tools, Storage Tools, Tool Sets, PTA Kits, etc. ). Our hardware solutions are trusted across the construction, machinery, automotive, and DIY sectors. With decades of expertise producing durable, reliable products, over 85% of our goods are exported internationally.
Strategically located in Hangzhou Xiaoshan Industrial Zone, we are part of a vibrant manufacturing hub that promotes clustering effects and supply chain efficiency. Our modern facilities and proximity to Shanghai Port allow for seamless production, inventory management, and timely delivery to global markets. Leveraging our hard-won reputation for integrity, dependability, and unparalleled quality, Union Hardware continues pioneering hardware distribution. We remain committed to delivering ideal products, services, and solutions at competitive costs for trade specialists and DIYers worldwide.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Room 401-1, No.58, Xiangshan Road, Wenyan Street, Xiaoshan, Hangzhou, Zhejiang, China
-
Plant Area
- 100 square meters
-
Number of Employees
- 4
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays, one month, 1-3 months
Off Season Lead Time: within 15 workdays, one month, 1-3 months -
Nearest Port
- Shanghai Port, Ningbo Port
-
Minimum Order Quantity
- 1000 pcs
-
Supply Chain Partners
- 56
Our Production Capability & Technical Expertise
-
Main Products
- Bit Holders, Bits, Sockets, Torque Wrench, Ratchet, Hex Keys, Tool Set, Pta Sets, Bi-Metal Screws, Stainless Steel Fasteners
-
Customization Options
- Full Customization, Minor Customization, Flexible customization, Customization from Designs, Customization from Samples
-
ODM Service Available
- Yes
-
R&D Engineers
- 1 people
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2023-08-03
-
Export Year
- 1 year
-
Main Markets
- Europe, Africa, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What is the minimum order quantity?
- The minimum order quantity is 1000 pieces.
- Can you provide custom sizes and designs?
- Yes, we offer full customization including non-standard sizes and designs based on your requirements.
- What are the available payment terms?
- We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.
- What is the lead time for orders?
- Lead time varies by quantity and season, ranging from within 15 workdays to 1-3 months.
- Do you offer samples before bulk production?
- Yes, samples are available for quality testing and verification.
- What certifications do your products have?
- Our products are certified under ISO9001:2015 and BSCI standards.
- What shipping methods do you support?
- We support Sea Freight, Air, Train, and Express delivery options.
- What is the warranty or quality guarantee?
- We provide quality sample testing and third-party inspection options to ensure product quality.
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