Metric Measurement System Grade 12.9 Black Concave End Hexagon Socket Set Screws ISO9001 2015 Certified
Price:
$0.01/pieces 10000-29999 pieces
MOQ:
30000
Delivery Time:
7~15 Working Day
Brand:
FinExpress
Product Description
Grade 12.9 Black Concave End Hexagon Socket Set Screws
Product Overview
Our Grade 12.9 Black Concave End Hexagon Socket Set Screws are engineered for extreme durability and precision in high-stress environments. Featuring a hexagon socket (Allen key) drive, concave (cup) point, and a black protective coating, these set screws combine exceptional tensile strength with corrosion resistance.
Made from Grade 12.9 carbon steel (the highest strength class in ISO 898-1), they are ideal for securing gears, pulleys, shafts, and other critical components in machinery, automotive systems, and industrial equipment. The black finish enhances aesthetics while providing an additional barrier against moisture and abrasion.
Technical Specifications
| Parameter | Details |
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| Grade | 12.9 (Tensile Strength: 1200 MPa) |
| Head Type | Hexagon Socket (Allen) Head |
| Point Type | Concave (Cup) Point |
| Material | High-Strength Carbon Steel (Grade 12.9) |
| Surface Finish | Black Oxide or Electroless Nickel Coating |
| Diameter Range | M3–M30 |
| Length Range | 6mm–150mm |
| Applications | Automotive, industrial machinery, aerospace, robotics, and heavy equipment |
Applications
These set screws are widely used in:
- Automotive Manufacturing: Securing transmission components, bearings, and drive shafts.
- Industrial Machinery: Fastening pulleys, couplings, and motor parts under high torque.
- Aerospace & Defense: Critical fastening in aircraft engines, landing gear, and hydraulic systems.
- Heavy Equipment: For construction machinery, mining tools, and agricultural equipment.
- Automation & Robotics: Ensuring vibration-resistant fastening in robotic arms and conveyor systems.
Why Choose Our Grade 12.9 Set Screws?
- Unmatched Strength: Grade 12.9 ensures maximum load-bearing capacity and fatigue resistance.
- Corrosion Protection: Black coating extends service life in humid, chemical, or outdoor environments.
- Precision Engineering: ISO/DIN-compliant dimensions for seamless integration into global projects.
- Custom Solutions: Tailor diameters, lengths, and finishes to meet your exact specifications.
- Cost-Effective: Competitive pricing with bulk order discounts (minimum 500 pieces).
Specification
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More Detail Informations
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Available Material
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1.Stainless Steel: SS303, SS304, SS316, SS410, SS420;
2.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045; 3.Brass: C3602,C3604,Hpb59,Hpb62,Hpb65,Hpb58,Hpb70 ; 4.Aluminum: Al6061, Al6063 etc or as your requirements |
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Head type
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CSK Head,Pan Head,Truss Head,Hexagon Head,Round Head,Oval Head,Button Head,Cap Head,Cheese Head,etc.
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Hardness
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Carbon Steel:HRC:28~35 ,HV450~700
Alloy Steel:HRC:32~39(grade10.9) HRC:39~44(grade12.9) |
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Finish
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Zinc plated, Nickel plated, Bronze, Copper,Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Silver,
Phosphorization,Zinc-nickel alloy plated etc. |
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Sample Available
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The sample is free of charge if we have the existing tooling,you only need to pay for the freight cost
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Delivery time
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Samples time 3-5 working days, Lead time 20-25 working days
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Pricing Term
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EXW Dongguan(FCA),FOB, CIF, CNF, DDU,etc.
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Packing
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Bulk in PE bag or Small boxes.then in carton .pallet
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Payment term
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TT (30% in advance as deposit, balance before delivery) , L/C, Western Union,PayPal etc
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Management system
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ISO9001:2015
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Certificate
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ISO,ROHS
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Why Choose Us
Company Profile
FAQ
Q1: What is your main products and material supply?
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
Q2: When can I get the price?
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
Q3: What about the transportation and delivery date?
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
Q5: Can I get discounts?
A: Yes, for big order, frequent customers, we give reasonable discounts.
A: Yes, for big order, frequent customers, we give reasonable discounts.
Q6: Do you have enough capacity?
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
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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
Finexpress Precision Manufacturing (dongguan) Co., Ltd
Location
Building 2, No. 129 Xinmalian Xinma Road, Dalang Town, Dongguan, Guangdong, China
Contact Person
Irene chen