7mm Socket Head Cap Screw & 8.8 Socket Head Cap Screws | Buy
7mm Socket Head Cap Screw & 8.8 Socket Head Cap Screws โ Precision Fasteners for Heavy-Duty Applications
โ Eliminate costly downtime & thread failure with grade 8.8 socket head cap screws and 7mm socket head cap screw variants. Engineered for automotive, construction, and agricultural machinery โ backed by full traceability, competitive TCO, and 24/7 support.
โ๏ธ In-house production ยท 30+ countries served
โ ๏ธ Why 73% of Procurement Managers Report Fastener Failures Every Quarter
Sourcing 7mm socket head cap screw or 8.8 socket head cap screws from unreliable suppliers leads to:
- ๐ด Thread stripping & fatigue cracks โ 23% higher rejection rate on subโgrade fasteners (internal audit data).
- ๐ด Hidden logistics costs โ fragmented suppliers increase freight cost by up to 18% per order.
- ๐ด Certification gaps โ 41% of imported fasteners lack full ISO/CE documentation (2024 trade compliance report).
- ๐ด Long lead times โ average 6โ8 weeks for custom diameters like M7, delaying production lines.
- ๐ด Inconsistent heat treatment โ batch-to-batch hardness variation causes rework & warranty claims.
โก๏ธ You need a partner with certified grade 8.8 socket head cap screws and M7 expertise โ not just a supplier.
$2.7M
average annual loss due to fastener failure in heavy equipment (industry benchmark)
๐ฉ 7mm Socket Head Cap Screw & 8.8 Socket Head Cap Screws โ Engineered for Reliability
Every 7mm socket head cap screw and grade 8.8 socket head cap screw from Boen Fastener is manufactured under ISO 9001, with full material traceability and third-party testing.
Factory-Direct Pricing
Cut out intermediaries. Our 7mm socket head cap screw costs 15โ25% less than distributor lists.
Precision M7 Threads
6g tolerance, rolled threads, and grade 8.8 socket head cap screws with consistent HRC 22โ32 hardness.
7-Day Express Delivery
Stocked in 30+ sizes. Custom lengths ship in 10โ12 working days โ faster than industry average.
Full Certification Pack
ISO 9001, CE, RoHS, and material test reports (MTR) included with every 8.8 socket head cap screws order.
๐ Technical Specifications โ 7mm Socket Head Cap Screw & 8.8 Grade
| Parameter | 7mm Socket Head Cap Screw | 8.8 Socket Head Cap Screws (M6โM20) |
|---|---|---|
| Thread Diameter | M7 (non-standard, 7mm) | M6, M8, M10, M12, M14, M16, M18, M20 |
| Property Class | 8.8 / 10.9 / 12.9 (custom) | 8.8 (medium carbon steel, Q&T) |
| Material | 35CrMo / 42CrMo4 / 40Cr | 45# steel / 35CrMo (on request) |
| Hardness (HRC) | 22โ32 (8.8) / 32โ39 (10.9) / 39โ44 (12.9) | 22โ32 HRC |
| Tensile Strength (MPa) | โฅ800 MPa (8.8) / โฅ1040 MPa (10.9) | โฅ800 MPa |
| Yield Strength (MPa) | โฅ640 MPa (8.8) | โฅ640 MPa |
| Coating / Finish | Black oxide, zinc plated, HDG, Dacromet | Zinc plated (Fe/Zn 5โ12ยตm), black oxide |
| Standards | DIN 912 / ISO 4762 (custom M7) | DIN 912 / ISO 4762 / GB/T 70.1 |
๐ Custom lengths, coatings, and packaging (bulk bags, barcode labels, ERP-ready) available. Contact us for 7mm socket head cap screw samples.
Agricultural Machinery
Used in harvester gearboxes, tiller blades, and tractor linkages. 8.8 socket head cap screws withstand vibration and shock loads.
Automotive Assembly
Engine mounts, transmission housings, and chassis components. Our 7mm socket head cap screw fits OEM-specific M7 threads.
Construction & Structural
Steel-to-steel connections, scaffolding, and heavy bracketry. Grade 8.8 socket head cap screws provide high clamping force.
Industrial Equipment
Presses, conveyors, and robotic arms. Replace ordinary fasteners with 8.8 socket head cap screws for longer service intervals.
โ Frequently Asked Questions โ 7mm Socket Head Cap Screw & 8.8 Grade
๐ Is the 7mm socket head cap screw a standard metric size?
M7 is a non-standard thread diameter, but it is widely used in specific automotive and agricultural applications. We produce 7mm socket head cap screws to DIN 912 / ISO 4762 geometry with full traceability. Custom lengths from 12mm to 200mm available.
๐ What does grade 8.8 mean for socket head cap screws?
Grade 8.8 indicates a medium-carbon steel fastener that has been quenched and tempered. It offers a minimum tensile strength of 800 MPa and yield strength of 640 MPa. Our 8.8 socket head cap screws meet or exceed ISO 898-1 requirements.
๐ Can I get a sample of the 7mm socket head cap screw before bulk order?
Yes! We offer free samples (up to 10 pcs) for qualified B2B buyers. Just pay shipping. Request via our contact form or WhatsApp +86 15630072814.
๐ Do you provide certificates for 8.8 socket head cap screws?
Absolutely. Every shipment includes a Mill Test Report (MTR) and certificate of conformity. ISO 9001, CE, and RoHS documentation available. Third-party inspection (SGS, TรV) can be arranged.
๐ What is the minimum order quantity for 7mm socket head cap screw?
Standard MOQ is 500 pcs for M7. For 8.8 socket head cap screws in popular sizes (M8, M10, M12), MOQ starts at 200 pcs. Contact us for volume discounts.
๐ How do you handle logistics for international orders?
We ship via FOB Tianjin, CIF, or DDP (for USA/EU). Express (DHL, FedEx) for samples, sea freight for bulk. Typical transit: 5โ7 days air, 20โ30 days ocean. We provide real-time tracking.
๐ Can you customize the head marking or packaging?
Yes. We offer OEM head stamps (e.g., your brand, grade mark), barcode labels, and bulk packaging (25kg bags, palletizing). Just share your requirements.
๐ What payment terms do you accept?
T/T (30% deposit, 70% before shipment), L/C, and PayPal for samples. For long-term contracts, we can discuss net 30/60 terms after credit review.
โญ Real Feedback from Buyers of 7mm & 8.8 Socket Head Cap Screws
"We use 8.8 socket head cap screws for our harvester gearboxes. Boen's consistency is outstanding โ zero failures in 6 months. We saved 22% compared to our previous distributor."
โ โ โ โ โ
"The 7mm socket head cap screw was exactly what we needed for a specialized steel joint. Boen provided MTR and hardness test reports without hesitation. Fast delivery, great communication."
โ โ โ โ โ
"We evaluated 5 suppliers for 8.8 socket head cap screws. Boen offered the best balance of price, quality, and lead time. Their 10-day delivery saved our production schedule."
โ โ โ โ โNeed 7mm Socket Head Cap Screw or 8.8 Socket Head Cap Screws? Letโs Talk.
Get a quote within 24 hours. Free samples for qualified buyers. Risk-free: if the product doesn't meet spec, we replace or refund.
๐ง shuan@fastenboen.com ยท mary@fastenboen.com ยท grace@fastenboen.com ยท stella@fastenboen.com
๐ Hanguang Industrial Park, Yongnian District, Handan City, Hebei, China ยท Daily 09:00โ17:00
๐ Trusted by 300+ Engineering & Procurement Teams Worldwide
CNC thread rolling
Hardness testing
Export-ready packaging
30,000+ pcs in stock
"We switched to Boen for our 8.8 socket head cap screws and reduced fastener rejection from 12% to 1.8%. Their M7 custom batch arrived in 9 days โ half the lead time of our previous supplier."