Grade Class 8.8 10.9 12.9 Black Oxide Zinc Nickel Plating Cross Recessed Round Head Metal Screw Assembled With Washer
Price:
$0.01~2.56,Piece/Pieces
MOQ:
10pcs
Delivery Time:
about 12-18days
Brand:
JIASHAN
Product Description
Grade Class 8.8 10.9 12.9 Black Oxide Zinc Nickel Plating Cross Recessed Round Head Metal Screw Assembled With Washer
Product Description
This series of SEMS screws uses high‑strength carbon steel with property classes 8.8, 10.9 and 12.9 to cover medium to extreme load conditions. The cross recessed round (pan) head accepts standard Phillips drivers. Surface finishes include black oxide (with oil film), blue/white/yellow zinc plating, and nickel plating – each offering different levels of corrosion protection and appearance. A flat or combination washer is pre‑assembled to distribute load and protect the workpiece surface. These screws are designed for general mechanical, automotive and industrial applications where strength and cost‑effectiveness are key.
Applications
| Industry | Usage |
|---|---|
| Automotive | High-strength applications in engines, heavy-duty machinery, and bridge construction |
| Mechanical | Connecting mechanical parts, circuit boards, engines, transmissions in various industries |
| Energy | Connecting power generation equipment and transmission lines |
| Architectural | Building structures, shipbuilding, and petrochemical equipment |
- Automotive brackets and shields: Grade 10.9 black oxide for engine periphery.
- Heavy‑duty packing cases: Grade 12.9 for impact resistance.
- Power tool housings: Grade 8.8 zinc plated for economy.
- Automation frames: nickel plating matches stainless steel colour.
- Furniture hardware: black oxide for indoor use with oil lubrication.
Key Features
- Three strength grades allow precise selection for different loads.
- Multiple finishes provide flexibility between cost, corrosion resistance and appearance.
- Captive washer speeds up automated assembly.
- Cross recess is compatible with common PH/PZ bits.
- High toughness even at Grade 12.9 due to proper heat treatment.
Company Information
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days if not in stock (depending on quantity).
Q: Do you provide samples? Is it free or extra?
A: Yes, we offer free samples but customers pay the freight cost.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hunan Jia Shan Hardware Tech Co., Ltd.
Location
1st Floor,Building 8 Phase II Factory Building,No.8 Lutian Road,Lugu Base,Lugu Street,Xiangjiang New Area,Hunan Province.Postal Code:410205
Contact Person
Tan