Galvanized Socket Head Cap Screws & HD Cap Screw | Factory
Galvanized Socket Head Cap Screws & HD Cap Screw โ
Factory-Direct Strength for Critical Applications
Stop overpaying for unreliable fasteners. Engineered for heavy machinery, structural steel & automotive assembly โ delivered with full traceability, fast lead times, and 30โ45% cost savings vs. European/US distributors.
๐ฅ Get Free Quote in 24hโ 30+ countries served ยท ISO 9001 certified ยท Free samples available
โ ๏ธ Why Your Current Fastener Supplier Is Costing You More Than You Think
Inflated unit prices
European/US distributors routinely add 30โ55% markup on galvanized socket head cap screws. For a mid-size OEM buying 50k units/year, thatโs $18kโ$35k in unnecessary overhead.
Lead times > 12 weeks
โIn-stockโ promises often turn into 10โ14 week delays. 47% of procurement managers report production stoppages due to late fastener deliveries (2025 Industry Survey).
Inconsistent quality & plating
Non-uniform galvanizing leads to early corrosion, thread galling, and field failures. One automotive Tier-2 supplier told us: โWe rejected 12% of incoming HD cap screws โ the zinc layer was half the spec.โ
Hidden shipping & tariff costs
Split shipments, minimum order quantities, and unexpected duties inflate total landed cost by 18โ27%. Procurement teams waste 6+ hours per week chasing freight quotes.
โ Why Handan Boen Fastener Is the Smarter Source for Galvanized Socket Head Cap Screws & HD Cap Screws
Factory-direct power, 14 years of export expertise, and a quality system that protects your reputation.
Powerful Factory, Direct Pricing
100,000+ sq ft manufacturing facility in Hebei, China. We produce galvanized socket head cap screws from M3 to M36, grades 8.8โ12.9, with hot-dip or electro-galvanizing. No middlemen โ you pay factory price.
Quality Assurance You Can Trust
Every batch of HD cap screw is tested for hardness, tensile strength, plating thickness, and salt spray resistance. ISO 9001, CE, RoHS compliant. Full material traceability from mill to finished product.
High-Speed Delivery, Global Reach
15โ25 day lead time for standard orders. We ship via air, sea, or rail to 30+ countries. Dedicated logistics coordinator tracks every container until it reaches your warehouse.
๐ Technical Specifications โ Galvanized Socket Head Cap Screws & HD Cap Screw
| Parameter | Galvanized Socket Head Cap Screw | HD Cap Screw (Heavy Duty) |
|---|---|---|
| Material | Carbon steel / Alloy steel (SCM435, 40Cr) | Alloy steel (SCM440, 42CrMo4) |
| Grade | 8.8 / 10.9 / 12.9 | 10.9 / 12.9 |
| Plating | Hot-dip galvanized (HDG) / Electro-galvanized | Hot-dip galvanized (HDG) / Dacromet |
| Thread Size Range | M3 โ M36 (inch sizes: #4 โ 1ยฝ") | M6 โ M36 (ยผ" โ 1ยฝ") |
| Length Range | 6 mm โ 300 mm (ยผ" โ 12") | 16 mm โ 300 mm (โ " โ 12") |
| Standards | DIN 912, ISO 4762, ANSI/ASME B18.2.3.5M | DIN 912 (modified), ISO 4762 (heavy duty) |
| Hardness (HRC) | 22โ32 (Grade 8.8) / 32โ39 (Grade 10.9) / 39โ44 (Grade 12.9) | 32โ39 (Grade 10.9) / 39โ44 (Grade 12.9) |
| Salt Spray Resistance | 72โ200 h (depending on plating thickness) | 120โ300 h (HDG + Dacromet) |
๐ฉ Real-World Applications
HD cap screws used in bridge bearings, tower bolting, and heavy equipment anchoring. Galvanized socket head cap screws provide corrosion resistance for outdoor structures.
Tractor assemblies, harvester frames, irrigation systems โ high tensile strength resists vibration loosening and harsh environments.
Engine mounts, suspension components, chassis frames. Grade 12.9 HD cap screws meet OEM torque and fatigue requirements.
Pump housings, gearboxes, conveyor systems โ galvanized socket head cap screws simplify maintenance with hex socket drive and corrosion-resistant finish.
๐ Trusted by Engineers & Procurement Teams Across 30+ Countries
Handan Boen Fastener โ 100,000 sq ft manufacturing facility, Hebei, China
Our fasteners are used by leading companies worldwide
+ 25 more global brands
RoHS ยท REACH ยท ASTM
โWe switched to Boen for our galvanized socket head cap screws and cut our fastener spend by 37% while improving on-time delivery from 68% to 96%. The plating quality is consistent โ weโve had zero corrosion complaints in 18 months.โ
โTheir HD cap screw grade 12.9 performed flawlessly in our heavy equipment assembly line. Field failure rate dropped from 1.2% to 0.08%. The teamโs responsiveness during the trial run was impressive.โ
โ Frequently Asked Questions โ Galvanized Socket Head Cap Screws & HD Cap Screw
What is the difference between a standard socket head cap screw and an HD cap screw?
What galvanizing options do you offer for socket head cap screws?
What is the minimum order quantity (MOQ) for galvanized socket head cap screws?
How do you ensure the quality of HD cap screws before shipment?
What are the typical lead times for galvanized socket head cap screws?
Do you offer OEM/ODM services for custom fastener specifications?
What payment terms do you accept for international orders?
How do you handle after-sales issues or product defects?
โญ What Our Customers Say About Our Galvanized Socket Head Cap Screws & HD Cap Screws
โThe galvanized socket head cap screws from Boen are exactly as specified. Plating thickness has been consistent across 3 shipments โ our inspection team is very satisfied.โ
โ Marco V., Italy
โWe switched to Boenโs HD cap screw for our excavator arm assembly. Torque repeatability improved by 22% and weโve eliminated thread galling issues. Excellent support from the engineering team.โ
โ David K., Texas, USA
โFastest lead time weโve experienced from a Chinese supplier. 18 days from order to warehouse in Rotterdam. The galvanized socket head cap screws look and perform like premium European brands at 40% lower cost.โ
โ Lars J., Netherlands๐ฌ Real-time support โ as experienced by our customers
Our team responds to inquiries within 1 hour during business hours (09:00โ17:00 CST).
With 14 years in industrial fastener manufacturing and export, David has overseen the production of over 200 million units of galvanized socket head cap screws and HD cap screws for global clients. He is a certified ISO 9001 internal auditor and has led quality improvement projects that reduced customer rejection rates by 67%. David writes regularly on fastener specification, plating technology, and supply chain optimization.
๐ Ready to Secure Reliable Supply of Galvanized Socket Head Cap Screws & HD Cap Screws?
Take the next step in 60 seconds. Free sample packs, 48-hour quotation, and a dedicated account manager assigned to your project.
Or email: shuan@fastenboen.com ยท mary@fastenboen.com
Handan Boen Fastener Manufacturing Co., Ltd. ยท Hanguang Industrial Park, Yongnian District, Handan, Hebei, China ยท +86 15630072814
