Socket Head Cap Screw Covers & Socket Head Screw Key | Wholesale
โ Eliminate high prices, inconsistent quality & shipping delays. Get OEM/ODM socket head cap screw covers and socket head screw keys from a trusted Chinese manufacturer with 10+ years export experience.
๐ฆ Get Free Quote in 24hโญ Trusted by 30+ countries | ISO 9001 | CE | RoHS

๐ญ Handan Boen Fastener โ Hanguang Industrial Park
Sourcing socket head cap screw covers and socket head screw key sets from unreliable suppliers hits your bottom line โ hard. Here are the top pain points we hear every day from purchasing managers and technical directors:
High Price, Low Value
Markups from intermediaries add 30-50% to your unit cost. Factory-direct sourcing eliminates the bloat.
Inconsistent Quality
Poor heat treatment, wrong tolerances, or brittle plastic covers cause field failures and rework costs.
High Shipping Costs
LTL and express air freight for urgent orders can eat 20% of your margin. We consolidate and optimize sea freight.
Compliance Headaches
Missing CE, RoHS, or REACH docs can hold your shipment at customs for days. We provide full certification.
๐ โA single batch of substandard socket head cap screw covers caused a 3-day production halt for a German automotive client โ thatโs โฌ12,000 in downtime.โ
We combine powerful factory capability, rigorous quality assurance, and high-speed delivery to serve buyers in the USA, Europe, and beyond. Hereโs what sets us apart:
10,000+ mยฒ production base, 50+ injection molding & CNC machines. 30% lower cost than trading companies.
Every batch of socket head cap screw covers undergoes dimensional, hardness, and salt-spray testing. 0.3% defect rate โ verified by SGS.
Custom colors, logos, materials (PA66, PP, silicone), and socket head screw key geometries. 15-day sample lead time.
Stock items ship within 3-5 days. Production orders: 15-25 days. Express DDP available for USA/Europe.
All dimensions, materials, and performance data below are based on production batches shipped to US and EU clients. Custom specs available upon request.
| Parameter | Socket Head Cap Screw Cover | Socket Head Screw Key |
|---|---|---|
| Material | PA66 (nylon), PP, silicone, or ABS | Alloy steel (SCM435), 304 stainless steel, or titanium |
| Hardness (HRC) | N/A (plastic cover) | 48-52 HRC (black oxide), 42-48 HRC (stainless) |
| Thread Sizes | M3, M4, M5, M6, M8, M10, M12, M16, M20 | Hex: 1.5mm โ 10mm; Torx: T8 โ T55 |
| Color Options | Black, white, red, blue, green, yellow, custom RAL | Black oxide, bright zinc, nickel, or plain |
| Temperature Range | -40ยฐC to +120ยฐC (PA66), -50ยฐC to +200ยฐC (silicone) | -40ยฐC to +300ยฐC (alloy steel) |
| Certification | CE, RoHS, REACH, UL 94 V-2 | ISO 898-1, DIN 912, CE, RoHS |
| Packaging | Bulk bag, poly bag with label, or custom blister | Loose in box, hex key set pouch, or custom display |
๐ Note: Tolerances follow ISO 2768-m (covers) and ISO 4759-1 (keys). Full inspection reports provided with every shipment.
Engine covers, interior trim fasteners, battery pack screws
Harvester bolt covers, quick-release key sets for field maintenance
Panel mount screws, guard covers, tool-less access keys
Charger housing screws, busbar covers, tamper-proof key sets

๐ฑ WhatsApp & email conversations with US, UK, and German buyers โ ask us for more references!

Marc Dubois
Procurement Manager, France
โWe switched to Boen for M6 socket head cap screw covers. Cost reduced by 28%, and the dimensional consistency is far better than our previous supplier. Delivery was 4 days early.โ

Sarah Chen
Operations Director, UK
โThe custom socket head screw key sets with our logo arrived in 18 days. Zero defects out of 5,000 units. The team is very responsive โ highly recommended for OEM projects.โ

Tom Miller
Supply Chain Manager, USA
โDDP shipping to Texas made import seamless. No hidden fees, full customs clearance. The PA66 covers have excellent UV resistance โ perfect for our outdoor equipment.โ
1. What sizes of socket head cap screw covers do you offer for wholesale?
We stock M3 to M20 in PA66, PP, and silicone. Custom sizes up to M30 are available for OEM orders. Minimum order quantity (MOQ) for stock sizes is 500 pcs/size.
2. Can I get a custom socket head screw key with my brand logo?
Yes. We offer OEM/ODM for socket head screw keys โ laser engraving, embossing, or custom color handles. 15-day sample turnaround. MOQ for custom keys: 1,000 pcs.
3. What certifications do your socket head cap screw covers have?
All covers are CE, RoHS, and REACH compliant. PA66 and silicone grades are UL 94 V-2. We provide full certification documents with each shipment.
4. How do you handle shipping and logistics for USA/Europe?
We offer FOB, CIF, and DDP terms. Air freight (3-5 days) and sea freight (15-25 days) to major ports. DDP to USA, UK, Germany, France, and Netherlands includes customs clearance.
5. What is the payment term for wholesale orders?
Standard: 30% deposit, 70% before shipment. T/T, L/C, and PayPal (for samples) accepted. For established clients, we offer net 30 terms up to $20,000.
6. Can I request free samples before placing a bulk order?
Absolutely. Free samples for stock items (you pay shipping). Custom samples: $50-$100 per design, refundable with bulk order. Request via our contact form.
7. Do you provide after-sales support for quality issues?
Yes. We offer a 100% quality guarantee. If a batch fails inspection, we replace or refund within 15 days. Our technical team is available on WhatsApp/email for troubleshooting.

โ๏ธ David Harrington
Senior Industrial Fastener Engineer & Export Consultant | 18+ years in fastener sourcing & quality systems
David has overseen over 500 B2B fastener projects for automotive, agricultural, and energy clients across 30+ countries. He specializes in socket head cap screw covers, screw key design, and supply chain optimization for mid-to-large volume buyers.
๐ฅ Limited-time offer: Free sample kit for first-time wholesale orders over $500.
โ 100% quality guarantee โ DDP shipping โ 24h response โ ISO 9001 certified
๐ง shuan@fastenboen.com โ mary@fastenboen.com โ grace@fastenboen.com โ stella@fastenboen.com
๐ญ Hanguang Industrial Park, Yongnian District, Handan, Hebei, China โ Daily 09:00 โ 17:00
๐ค Trusted by Global Buyers โ Certificates & Partners
๐ธ Real factory shots โ Hanguang Industrial Park, Handan. 10+ years of export expertise.