Hardware fasteners, Drenky Allen Socket Cap Head Bolts, designed for secure, corrosion-resistant fixing in assemblies. Home improvers and workshop professionals gain reliable torque and tidy threads for repeatable installations. Are M8 cylinder head bolts a sensible choice for outdoor or humid environments?
⚡ At a Glance
- • Corrosion Resistance: 304 stainless steel offers resistance to rust in humid conditions.
- • Best for: Machinery, furniture and light marine use where corrosion resistance matters.
- • Not ideal for: Applications that demand specialist high-strength alloy fasteners.
M8 x 40 mm cylindrical head bolts conforming to DIN 912 (ISO 4762). Consistent dimensions suit standard metric assemblies.
Long-lasting corrosion protection - with 304 stainless steel and black oxidation
304 stainless steel provides inherent resistance to oxidation, while the surface receives a black oxidation treatment rather than electroplating. The combination improves resistance to fading and surface wear.
Durable finish and material choice keep fastenings serviceable in humid indoor or sheltered outdoor environments, reducing replacement frequency.
Secure tightening and low cam-out - thanks to hexagon socket and suitable hardness
Hexagon socket heads and controlled hardness reduce driver slip by ensuring even contact between tool and drive recess. Uniform socket geometry helps distribute torque evenly during tightening.
More secure torque transfer minimises rounded heads and makes assembly or maintenance less fiddly, especially in confined spaces.
Clean assembly and consistent fit - with smooth, burr-free threads and DIN 912 standard
Threads are described as obvious and smooth without burrs, and the fasteners meet DIN 912 (ISO 4762) cylindrical head standards for dimensional consistency. Smooth threads allow easier engagement with mating components.
Faster installations with lower risk of cross-threading and predictable fits across repeat jobs.
✨ The 4 Key Reasons for Drenky Allen Socket Cap Head Bolts
- Black oxidation surface - Keeps finish stable and resists fading and scratches
- Hexagon socket head - Reduces driver cam-out for more accurate tightening and less tool wear
- Smooth precision threads - Make assembly quicker and lower cross-threading risk
- Pack of 10 - Convenient quantity for small projects and quick replacements
📋 Technical Details at a Glance
- Category: Fasteners
- Size: M8 x 40 mm
- Quantity: Pack of 10
- Material: Stainless steel 304 (A2)
- Head type: Cylinder head
❓ Frequently Asked Questions
Q: Are these suitable for outdoor or humid conditions?
A: Yes. Stainless steel 304 combined with a black oxidation surface treatment is described as suitable for indoor and outdoor use in humid conditions.
Q: What size and standard are these fasteners?
A: Size is M8 x 40 mm with a cylindrical head, and the fasteners conform to DIN 912 (ISO 4762) standard.
Q: Will the hex socket slip when tightening?
A: Unlikely, as the socket geometry and stated material hardness reduce the chance of driver slippage while smooth, firm threads help achieve a reliable grip.
🏆 Our Verdict
Suitable for DIY enthusiasts, workshop users and industries that need reliable, corrosion-resistant metric fastenings. 304 stainless steel, a black oxidation finish and precise hexagon sockets combine for durable, consistent performance. Given the robust materials and tidy manufacturing, long-term value is strong for those replacing or fitting fastenings regularly.
