Long Screws For Socket & Long Socket Head Cap Screw | Factory
🔩 Long Screws For Socket & Long Socket Head Cap Screw – Factory‑Direct Precision
Eliminate thread stripping, assembly delays, and costly supplier markups. Get ISO‑9001 socket head cap screws engineered for automotive, agricultural, and construction applications — shipped from our Chinese factory in 10–18 days.
📦 Get Free Quote in 24h✅ Free samples • ✅ ERP‑friendly ordering • ✅ OEM/ODM accepted
⚙️ 50,000 m² smart factory · 30+ countries
⚠️ The Hidden Cost of “Cheap” Socket Screws
Procurement managers and technical directors tell us the same story — low‑cost long screws for socket often lead to expensive downstream failures.
of field failures trace back to inconsistent thread hardness in imported socket cap screws.
higher total logistics cost when ordering from multiple small suppliers vs. a single factory‑direct source.
longer lead time for long socket head cap screw custom lengths from non‑specialized mills.
extra per unit in rush shipping when stock runs out — a cost that erodes your margin on every order.
“We switched to Boen after three consecutive shipments of M10×80 socket screws failed torque testing. Their long screws for socket batches have been 100% consistent since 2022.” — Procurement lead, European agricultural machinery OEM
🔧 Our Solution: Factory‑Engineered Long Socket Head Cap Screws
Powerful Factory
50 cold‑heading & CNC machines • 10,000 ton monthly capacity • 10+ years export to 30 countries.
Quality Assurance
ISO 9001:2015 • RoHS • CE • 100% dimensional inspection • Hardness & torque test reports on every batch.
OEM/ODM Design
Custom head markings, thread lengths, material grades (304, 316, 12.9 alloy), and packaging ready for your ERP.
High‑Speed Delivery
10–18 days standard • 5–8 days express • Factory‑direct pricing saves you 15–25% vs. distributors.
| Parameter | Available Range | Standard / Grade | Notes |
|---|---|---|---|
| Thread Diameter | M3 – M30 (inch #4 – 1‑1/8″) | DIN 912 / ISO 4762 / ASME B18.3 | Metric & UNC/UNF |
| Length (long screws for socket) | 6 mm – 300 mm (0.25″ – 12″) | Custom lengths ≤ 600 mm by request | +/- 0.5 mm tolerance |
| Material Grades | Carbon steel 8.8 / 10.9 / 12.9, SS304, SS316, 316L, A2‑70, A4‑80 | ISO 898‑1 / ASTM F593 | Surface: black oxide, zinc, HDG, Dacromet |
| Hex Socket Size | 2 mm – 22 mm (5/64″ – 7/8″) | DIN 912 / ISO 4762 | Counter‑bored depth controlled |
| Packaging & Certification | Bulk, poly‑bag, box, pallet, custom label | ISO 9001, CE, RoHS, REACH | ERP‑friendly barcode & COC |
📐 All long socket head cap screw batches include a dimensional report and material certificate — no extra charge.
📍 Where Long Socket Head Cap Screws Deliver Real Impact
- 🚜 Agricultural machinery — blade retention, chassis fastening (M12×100–M16×180, 10.9 grade)
- 🏗️ Construction formwork & scaffolding — high‑clamp‑load bolting (M20×250, 12.9 black oxide)
- ⚙️ Automotive powertrain & chassis — stainless steel A4‑80 for corrosion resistance
- 🔧 Industrial tooling & die sets — precision‑length M8×40–M16×120 for mold clamping
- 📦 Cross‑border e‑commerce sellers — ready‑to‑ship SKUs in poly‑bag or display box
Case: A German tractor builder reduced fastener rejection rate from 5.2% to 0.3% after switching to Boen’s long screws for socket in 12.9 alloy. Annual savings: ~€47,000.
✅ Certifications
ISO 9001:2015 · CE · RoHS · REACH · UL recognized
Trusted by
⭐ What Our Customers Say About Long Screws For Socket
Marc D. · Procurement Manager, France“The long socket head cap screw M12×160 we ordered arrived with a perfect 12.9 hardness batch. Zero failures in our press tooling. Boen is now our sole supplier.”
Anna K. · Supply Chain Lead, UK“We cut our fastener spend by 18% after moving to Boen’s factory‑direct long screws for socket. Lead times are consistent and the COC is always included.”
Carlos R. · Operations Director, Spain“Emergency order for M16×200 socket cap screws — Boen delivered in 7 days. The quality exceeded our German supplier’s. Highly recommend.”
✍️ Written by Chen Wei — Senior Fastener Engineer, Boen Fastener
12 years in cold‑heading and thread rolling. Chen leads our R&D team and has overseen over 800 custom long socket head cap screw projects for European and American OEMs. He regularly audits production lines to ensure every batch meets ISO 898 & ASTM standards.
❓ Frequently Asked Questions
🔹 What is the minimum order quantity (MOQ) for long screws for socket?
Standard MOQ is 2,000 pcs per size. For custom long socket head cap screw lengths (≥200 mm), MOQ is 1,000 pcs. We also offer sample orders (50–200 pcs) for qualification.
🔹 Can you provide OEM packaging with my company logo?
Yes. We offer custom head markings, laser etching, and private‑label poly‑bags, boxes, or pallets. ERP‑friendly barcode labels are available at no extra cost for orders above 5,000 pcs.
🔹 What shipping options do you offer for US/Europe buyers?
We ship via FOB Tianjin, CIF Hamburg/Rotterdam, or DDP for qualified accounts. Standard transit: 10–18 days (sea), 5–8 days (air). Free sample shipping for first‑time buyers.
🔹 How do you ensure the quality of long socket head cap screws?
Every batch undergoes: chemical composition analysis, hardness testing (HRC), torque test, and dimensional inspection (thread pitch, head height, socket depth). ISO 9001:2015 process control. A COC is included with each shipment.
🔹 What payment terms do you accept?
T/T (30% deposit, 70% before shipment), L/C at sight, and for repeat customers — net 30 days (credit limit up to $50,000). PayPal available for sample orders.
🔹 Can you make non‑standard lengths or custom thread forms?
Absolutely. Our tool room can produce custom long screws for socket up to 600 mm, with full thread, partial thread, or special underhead fillet. Send your drawing for a rapid quote.
🚀 Ready to Secure Reliable Long Socket Head Cap Screws?
📅 Limited‑time offer: Free sample pack + priority production slot for first‑time factory buyers.
⏳ Offer valid for the next 14 days.
📧 shuan@fastenboen.com · 📞 +86 15630072814 / +86 13293070568
📍 Hanguang Industrial Park, Yongnian District, Handan, Hebei, China · Mon–Sat 09:00–17:00
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