Global Specialist in Fin Bolt / Silo Bolt for Storage Tanks
High‑strength bolts, nuts and washers for bolted steel silos and storage tanks.
Products Description
The M12 / M16 Fin Neck Bolt Kit is the metric standard solution for FRP and steel storage tank assembly across Europe, Asia and the Middle East.
Engineered to eliminate the #1 failure point in bolted tank construction
— fiberglass cracking at bolt holes
— trusted by tank manufacturers in 30+ countries since 1990.
Why European and Asian Tank Manufacturers Choose Our Metric Fin Neck Bolt Kit:
✓ Metric thread (M12 / M16)
— direct fit for DIN and ISO standard tank projects
✓ Eliminates FRP cracking
— fin neck design distributes stress evenly across panel
✓ NSF/ANSI 61 certified
— legally approved for drinking water storage tanks
✓ Salt spray tested >1,000 hours
— outlasts standard metric bolts by 50%+
✓ ISO 898.1 Class 10.9 bolt + ISO 4032 Class 10 nut
— meets European structural standards
✓ EU C824 tariff eligible
— anti-dumping duty ~40% lower than standard China suppliers
✓ CE EN 15048 certified
— accepted on European construction projects
✓ Complete kit
— bolt, nut, steel washer, rubber washer and plastic cap in one order
✓ Sample trial up to 100kg
— test before committing to bulk order
| Standard Metric Bolt | Our M12/M16 Fin Neck Bolt Kit | |
|---|---|---|
| FRP crack prevention | ✗ | ✓ Fin neck design |
| Salt spray resistance | < 500 hrs | > 1,000 hrs |
| Drinking water certified | ✗ | ✓ NSF/ANSI 61 |
| CE certified | ✗ | ✓ EN 15048 |
| EU preferential tariff | ✗ | ✓ C824 eligible |
| Bolt grade | Varies | ISO 898.1 Class 10.9 (1040 N/mm²) |
| Nut grade | Varies | ISO 4032 Class 10 |
| Complete kit supplied | ✗ | ✓ 5-piece kit |
| Color options | 1 | 7 colors |
| Sealing gasket material | Limited | EPDM / NBR / ABS / PP |
| Quality traceability | Optional | ✓ Batch report included |
| Carbon footprint cert | ✗ | ✓ ISO 14067 |
Order inquiry, provide samples
1 Set =
1x Encapsulation Fin Neck Bolt + 1x Hex Nut + 1x Steel Washer + 1x Rubber Washer + 1x Plastic Cap
| Specification | Detail |
|---|---|
| Size (M12) | M12×30 / M12×35 / M12×40 / M12×50 / M12×60 |
| Size (M16) | M16×55 / M16×63 |
| Unit weight M12 (per 1000 sets) | 77.42 / 81.225 / 86.925 / 93.1 / 100 kg |
| Color | Red / Yellow / Blue / Green / Black / White / Gray |
| Material (bolt) | — Tensile ≥1040 N/mm², Proof Load ≥940 N/mm² |
| Material (nut) | ISO 4032 Class 10 |
| Surface treatment | Encapsulation coating (eco-friendly, heat & corrosion resistant) |
| Head design | Fin Neck |
| Tensile strength | ≥ 800 MPa |
| Salt spray test | > 1,000 hours |
| Sealing gasket | EPDM / NBR / ABS / PP |
| Temperature range | -40°C ~ +80°C |
| Brand | FAST |
| Quality traceability | Batch inspection reports; O1PB available in USA |
| Certification | ISO 9001:2015 / EN 15048 CE / NSF/ANSI 61 / ISO 14067 |
| OEM pricing | Available for orders ≥ 30,000 sets (15% discount) |
【Applicable Industries】
✓ Water treatment projects (drinking water, sewage treatment plants)
✓ Agricultural storage (grain silos, liquid fertilizer storage tanks)
✓ Petrochemical industry (crude oil storage tanks, chemical storage tanks)
✓ Industrial manufacturing (cement silos, powder storage tanks)
【Applicable Environment】
✓ Desert high temperature environment (Middle East region)
✓ Coastal high humidity environment (Southeast Asia)
✓ Cold regions (North America, Northern Europe)
✓ Chemical corrosion environment
【Problem Solved】
✓ Prevent water/oil leakage at the joints of tank panels
✓ Resist loosening caused by long-term vibration and temperature differences
✓ Maintain long-term stability in corrosive media
✓ Meets drinking water safety standards
Why Choose Tank-Bolt.com:
35 years exclusively focused on storage tank fasteners (since 1990)
The only China manufacturer combining NSF/ANSI 61 + CE EN15048 + ISO 9001:2015 + ISO 14067
Metric and imperial both available
— M12/M16 for European/Asian projects, 1/2" UNC for North American projects
EU C824 preferential tariff
— legally verified, ~40% lower anti-dumping duty
Malaysia workshop under preparation
— future local supply for Southeast Asia
Batch quality traceability
— full inspection reports with every order
OEM pricing for orders ≥ 30,000 sets
Ready to Test Our M12 / M16 Fin Neck Bolt Kit?
Sample Program: Trial orders up to 100kg available
Response Time: Within 24 hours
Shipping: In-stock items ship within 1 week, door-to-door delivery
To get started, please tell us:
Your tank type (water tank / grain silo / oil tank / chemical tank)
Panel material (FRP / steel)
Required bolt size (M12 or M16) and length
Estimated annual purchase volume
→ [Contact Us for Pricing and Samples]
Related Products:
1/2" UNC Fin Neck Bolt Kit
— imperial size for North American projects
Plastic Cap
— replacement protective caps for existing installations
Nylon Washer
— FRP panel sealing washer
Bin Bolt
— for grain silos and dry bulk storage
Related Pages:
Quality & Testing
— laboratory standards and test methods
Quality Certificate
— ISO 9001, NSF/ANSI 61, CE EN15048, ISO 14067
About / Company
— 35 years factory history
Contact Us
— quote within 24 hours
OUR ADVANTAGE
Industry Authority
FAST® Zhonglian is the first manufacturer in China to obtain dual EN 14399 & EN 15048 (SB Bolts) certifications .
Our silo bolts meet ASTM Grade 8 (150,000 PSI) and ISO 10.9 high-tensile standards .
NSF/ANSI 61 & 372 Certified (Lead-Free)
ISO 9001:2015 Quality Management
Green Supply Chain
Committed to ESG goals, we provide verified ISO 14067 Product Carbon Footprint statements.
Our screws feature a verified GHG emission of 7027.78 kg CO2e per tonne .
Traceable manufacturing via Intelligent Cloud Management System .
Global Presence
Supporting mega-infrastructure from Dubai Tower to the Riyadh Cables Group.
Local support available via our global hubs:
📍Middle East:Dubai Branch
📍Asia:Malaysia & Indonesia
Brand Identity: FAST® | 01PB (US Registered)