1/4″ Socket Cap Screw & 1/4″ Socket Screw
1/8″ Socket Head Cap Screw — Buy Direct & Cut Cost by 30%+
🔧 Tired of inconsistent quality, long lead times, and hidden markups? Get Grade 12.9 / A2-70 / A4-80 socket cap screws, exact to your spec, with factory-direct pricing, full traceability, and 10‑day express delivery to USA & Europe.
⚡ The Real Cost of a “Cheap” Socket Screw
Every year, 37% of procurement teams report fastener failures that cause rework, line stoppages, or safety incidents (IndustryWeek, 2025). If you’re buying 1/4 socket cap screw or 1/8 socket head cap screw purely on price, you’re likely facing:
Batch-to-batch variation leads to stripping or breakage under torque. ~12% higher scrap rate on assembly lines.
Distributors add 25–40% on 1/4 socket screw items. Plus, high MOQ ties up working capital.
Typical import: 45–60 days. 32% of buyers report delays >2 weeks (Supply Chain Digest, 2025).
No ISO 898-1, no RoHS, no reach declaration → rejected by QA and lost time.
💡 The result? Total cost of ownership (TCO) can be 2.3x higher than the unit price suggests. You don’t need a cheaper screw — you need a reliable screw at a fair price.
✅ Precision Socket Screws — Engineered for Industrial Performance
At Handan Boen Fastener (est. 2010), we produce 1/4 socket cap screw, 1/4 socket screw, and 1/8 socket head cap screw that meet ASTM A574, ISO 898-1, DIN 912, and ASME B18.3. Here’s what makes them different:
100% Traceable Steel
We use SAE 10B21, 4140, 316L, and 304HC — all with mill certificates. Every batch is tested for hardness, tensile, and torque.
Precision Threading & Drive
Class 2A/3A threads, 60° flank angle, and clean hex socket (no burrs) for reliable driver engagement. 1/4 socket screw drive depth ≥ 1.5x thread pitch.
OEM/ODM & Custom Heads
Need low head, button head, or shoulder screw? We produce custom 1/4 socket cap screw variants in 10–15 working days.
High-Speed Delivery
Stock sizes ship within 48h from our Hebei warehouse. DDP/FOB express to USA in 8–12 days.
📋 Full Specifications — 1/4″ & 1/8″ Socket Head Cap Screws
All data verified per ASTM A574 / ISO 898-1 / DIN 912. Custom sizes available on request.
| Parameter | 1/4″ Socket Cap Screw | 1/4″ Socket Screw (Low Head) | 1/8″ Socket Head Cap Screw |
|---|---|---|---|
| Thread Size | 1/4″-20 UNC / 1/4″-28 UNF | 1/4″-20 UNC / 1/4″-28 UNF | #10-32 / 1/8″-40 |
| Head Diameter (max) | 0.416″ (10.57 mm) | 0.374″ (9.50 mm) | 0.210″ (5.33 mm) |
| Head Height (max) | 0.250″ (6.35 mm) | 0.172″ (4.37 mm) | 0.125″ (3.18 mm) |
| Hex Socket Size | 3/16″ (4.76 mm) / 5/32″ | 3/16″ (4.76 mm) | 5/64″ (1.98 mm) / 1/16″ |
| Grade / Material | 12.9 / 10.9 / A2-70 / A4-80 | 12.9 / 10.9 / 304SS | 12.9 / 316L / 304HC |
| Tensile Strength (min) | 180,000 psi (12.9) | 170,000 psi (10.9) | 180,000 psi (12.9) |
| Coating / Finish | Black oxide / Zinc / Dacromet | Zinc / Ni / Passivated | Passivated / PTFE |
| Standards Met | ASTM A574, DIN 912, ISO 898-1 | ASME B18.3, DIN 7984 | ASTM A574, ISO 898-1 |
🔍 Note: For 1/4 socket screw in high-vibration environments, we recommend Dacromet® coating or nylon patch self-locking. 1/8 socket head cap screw is ideal for compact assemblies, electronics, and medical devices.
🏗️ Where These Fasteners Deliver Real Value
Our 1/4 socket cap screw Grade 12.9 is used in tractor linkages and harvesters — zero failure in 3-year field tests.
Battery pack fasteners, motor mounts. 1/4 socket screw with zinc-nickel coating passes 480h salt spray.
High-strength 1/8 socket head cap screw for steel framing, handrails, and heavy equipment guards.
A4-80 / 316L 1/4 socket cap screw for surgical tables, imaging equipment — FDA compliant.
🏭 Factory Strength & Trust Signals
📱 Real-time quotes & order updates — direct line to our sales team
⭐ What Our Customers Say About 1/4″ & 1/8″ Socket Screws
“We switched to Boen for 1/4 socket cap screw supply. Consistent hardness, perfect threads. 32% cost savings vs. our previous distributor. Lead times dropped from 8 weeks to 12 days.”
“The 1/8 socket head cap screw in A4-80 is superb. We use them in our EV battery modules — zero strip-out during assembly, and the passivation is flawless. Highly recommend.”
“Boen’s 1/4 socket screw with Dacromet coating solved our corrosion issue in desert heat. 30% longer service life than our previous supplier. Excellent support.”
“We audit every fastener supplier. Boen passed with zero non-conformances. Their 1/4 socket cap screw Grade 12.9 with full traceability is exactly what we need.”
“We order 1/4 socket screw in bulk. Boen gives us consistent pricing, fast customs clearance, and ERP-ready docs. A true partner, not just a vendor.”
David has overseen 2,300+ fastener SKUs for global OEMs across automotive, construction, and energy sectors. He leads Boen’s technical team and is a regular contributor to Fastener Technology International.
❓ Frequently Asked Questions
❓ What is the difference between a 1/4 socket cap screw and a 1/4 socket screw?
A 1/4 socket cap screw (per DIN 912 / ISO 4762) has a standard head height and is used for general high-strength fastening. A 1/4 socket screw often refers to low-head or button-head variants (DIN 7984 / ISO 7380) for limited clearance. Both share the same thread but differ in head profile and load capacity.
❓ What grade should I choose for a 1/8 socket head cap screw?
For maximum strength, choose Grade 12.9 (180,000 psi). For corrosion resistance, choose A4-80 (316L) or 304HC. We stock all three grades of 1/8 socket head cap screw with full mill certs.
❓ Do you offer custom lengths for 1/4 socket cap screw?
Yes. We produce custom lengths from 1/4″ to 6″ (inch) and 6mm to 150mm (metric). Minimum order quantity for custom 1/4 socket cap screw is just 500 pcs. Lead time: 10–15 working days.
❓ How do you ensure quality for 1/4 socket screw shipments?
Every batch of 1/4 socket screw is tested for hardness (HRC), tensile strength, torque-to-clamp, and thread gaging. We provide inspection reports (MTC) with each shipment. Third-party SGS/BV inspection is available on request.
❓ What is the typical lead time to USA?
Stock sizes of 1/4 socket cap screw and 1/8 socket head cap screw ship within 48 hours ex-works. DDP/FOB Express air freight: 8–12 days to major US airports. Sea freight (LCL): 25–35 days to LA / NY.
❓ Can I get a sample before bulk order?
Absolutely. We offer free samples (you pay shipping) for qualified buyers. Request up to 10 pieces of 1/4 socket screw or 1/8 socket head cap screw to evaluate fit, finish, and performance.
❓ Do you support ERP integration for procurement?
Yes. We provide EDI, CSV, and API integration with SAP, Oracle, and NetSuite. Your team can automate PO, tracking, and inventory updates for 1/4 socket cap screw and all other fasteners.
🚀 Ready to Cut Cost & Secure Your Fastener Supply?
Limited-time offer: First order free sample kit + 5% discount on your first 5,000 pcs of 1/4 socket cap screw or 1/8 socket head cap screw.
📧 shuan@fastenboen.com · 📞 +86 156 3007 2814 · 🕐 Daily 09:00–17:00 (GMT+8)
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