Magna-Grip Bolts Button Head Lock Bolt Ring-Grooved Never Loosening Rivet
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Product Highlights
- Unique ring-groove locking structure mechanical interlock instead of thread friction prevents loosening under heavy vibration for long-term structural safety
- High-grade carbon steel material (Grade 8.8 /10.9) uniform load distribution perfect for heavy-load steel structure connection
- Permanent locked joint after installation no need for re-torque inspection cuts your after-service cost
- Quick assembly with matched tools stable clamping force saves labor time for large-scale site erection
- Improved wear and rust resistance for outdoor projects; multiple sizes & custom specifications available
Product Attributes
- Customization
- Available
- Material
- Stainless Steel, Steel
- Type
- Mushroom Head
- Model NO.
- C50l
- Connection
- Common Bolt
- Head Style
- Round
- Standard
- DIN, ANSI, GB, JIS, Bsw, GOST
- Grade
- Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9
- Application
- Construction Industry
- Finish
- Polishing
- Minimumorder (MOQ)
- According to Customer Demand
- Non-Standards
- OEM Is Available, According to Drawing or Samples
- Transport Package
- Foam Bags / Cartons / Wooden Cases
- Origin
- China
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 Magna-Grip Bolts Button Head Lock Bolt Ring-Grooved Never Loosening Rivet
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Product Description



| Bolt | |
| Standard: | ASME/ANSI B 18.2.1,IFI149,DIN931,DIN933,DIN558, DIN601,DIN960, DIN961, ISO4014,ISO4017 |
| Diameter: | 1/4"-2 1/2",M4-M64 |
| Length: | ≤800mm or 30" |
| Material: | Carbon Steel, Alloy Steel, Stainless Steel, Brass |
| Grade: | SAE J429 Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9;A2-70,A4-70,A4-80 |
| Thread: | M,UNC,UNF |
| Finish: | Plain,Black oxide, Zinc Plated(Clear/Blue/Yellow/Black), H.D.G, Nickel, Chrome,PTFE,Dacromet,Geomet,Magni,Zinc Nickel,Zinteck. |
| Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
| Application: | Structural Steel; Metal Buliding; Oil&Gas;Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating |
| Equipments: | Caliper, Go&No-go gauge, Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter,Spectrometer |
| Supply Ability: | 1000 tons per month |
Our main markets include the

Physical Distribution

About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI2521006". Items marked "" are certified.
Company Profile
Shenzhen Shuntian Hardware Co., Ltd. is a premier manufacturer and exporter specialized in high quality fasteners, precision CNC machined parts and hand tools. Located in Shenzhen, China, we have over 16 year manufacturing experience and 5 year professional international trade experience, supplying hardware solutions to global customers.
Our goal is to be an extended partner for your business, delivering reliable, readily available and cost effective components. We serve markets across the United States, Canada, Singapore, Russia and Brazil, familiar with local quality standards and logistical requirements.
Our Core Competencies & Product RangeAs your one stop hardware supplier, we own large scale in house inventory and advanced production facilities.
1. Comprehensive Fastener Solutions
Screws: Machine screws, self tapping screws, wood screws, socket head cap screws, special purpose screws
Nuts: Hex nuts, lock nuts, flange nuts, cap nuts, weld nuts in various grades & finishes
Bolts: Hex bolts, carriage bolts, anchor bolts, U bolts, high strength structural bolts
Washers: Flat, spring, lock and tooth washers
Pins & Rivets: Dowel pins, cotter pins, clevis pins, blind rivets
2. Precision CNC Machining Services We produce high precision custom turned parts in stainless steel, carbon steel, brass, aluminum and copper. Tight tolerance components for automotive, electronics and general machinery industries.
3. Professional Hand Tools Hand tools are our sourced complementary items. Fasteners and CNC machined parts are our core in house manufactured products.
Screwdriver Bits: Phillips, Slotted, Pozidriv, Torx, Hex & security bits
Wrenches: Combination, socket, adjustable and torque wrenches
Why Partner With Us? ODM & OEM Customization We provide full range custom service. Our engineering team supports projects from concept to production based on your specifications, samples or drawings. Prototype sampling is offered; Sampling lead time and cost will be informed in advance.
Large Inventory & Fast Shipment We maintain over 5, 000 active SKUs of standard hardware. In stock goods can be shipped within 48 hours after receiving your confirmed order and payment. MOQ differs for stock and custom items; Please contact sales for details.
Strict Quality Assurance Full process QC covers raw material to final packaging. Products comply with ANSI, DIN, GB and ISO standards. We hold complete ISO9001, RoHS and REACH certificates. Material Test Certificates (MTC) can be provided upon request.
Solid Export & After sales Support With rich export experience, we handle full set of documents and global logistics. For confirmed quality defects, we offer replacement or compensation. Pre shipment third party inspection is acceptable.
Competitive Pricing & Flexible Payment Optimized manufacturing and supply chain management help us deliver good quality at competitive prices. Multiple payment terms are available, consult our sales team for details.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory
- Address
- Shenzhen, Guangdong, China
-
Plant Area
- 1505 square meters
-
Number of Employees
- 24
-
Registered Capital
- 500,000 RMB
-
Terms of Payment
- LC, D/P, T/T, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shenzhen Port
-
Supply Chain Partners
- 36
Our Production Capability & Technical Expertise
-
Main Products
- Hexagon Head Bolt, Bolts and Nut
-
Production Lines
- 5
-
Production Machines
- CNC Machine
-
QA/QC inspectors
- 2 people
-
Inspection Type for Finished Products
- Random inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Finished product checked by packing staff
-
Customization Options
- Customization from Samples, Full Customization, Customization from Designs, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 4 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2009-08-11
-
Export Year
- 16yeas in Domestic market
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 4
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO14001
-
Cooperated with Fortune 500
- No
FAQ
- What materials are available for this bolt?
- We offer 304, 316, and 316L stainless steel options to suit different environmental requirements.
- What is the thread diameter and length range?
- Thread diameter ranges from M3 to M100 (1/4-4'), and thread length from 3mm to 450mm (3/8 - 9-1/2').
- Can I order custom sizes or non-standard bolts?
- Yes, OEM is available according to drawings or samples, and custom sizes are available upon request.
- What is the minimum order quantity (MOQ)?
- The MOQ is flexible and determined according to customer demand.
- What is the typical delivery time?
- The standard delivery time is 3-7 days for most orders.
- What standards do your bolts comply with?
- Our products comply with GB, DIN, ISO, ANSI/ASTM, BS, BSW, and other international standards.
- How is the product packaged for shipping?
- We use foam bags, cartons, or wooden cases to ensure safe and secure transportation.
- What surface treatments are available?
- We provide plain finish and passivation treatments for stainless steel bolts.
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