
4x10mm (M4) Button Head Machine Screws, 8pkg, Koswork
Kosworks - KOSBS410 (M4) 4mm x 10mm long Button Head Machine Screws, 8pkg Includes little storage container Made from very high 12.9 grade hardened alloy steel. 12.9 on the ISO strength classification system is one of the strongest commonly available grades which is commonly used in motorsport, machinery, heav...
Kosworks - KOSBS410
(M4) 4mm x 10mm long Button Head Machine Screws, 8pkg
Includes little storage container
Made from very high 12.9 grade hardened alloy steel. 12.9 on the ISO strength classification system is one of the strongest commonly available grades which is commonly used in motorsport, machinery, heavy equipment as well as high stress joints. So a 12.9 bolt can withstand extremely high loads before deforming or breaking.
Metric hardware is commonly used in many modern RC airplanes, cars, drones, and boats, making these screws a must-have for builders who want the right fit every time. They thread smoothly, hold tight, and offer dependable strength for glow, gas, and electric models.
Made in Taiwan
- ·See product description for included items.
Assembly notes coming soon — ask Shane if you need a hand before your first flight.
Dispatch — Orders dispatch within 1–2 working days. Tracked courier NZ-wide; delivery typically 1–3 working days depending on location. Rural delivery adds a day.
Cost — Free over $150. Flat $9.50 under. Oversized airframes may carry a freight surcharge — shown at checkout.
Click & collect — Free pickup from 9 North Avon Road, Christchurch. After-hours by appointment — text ahead.
Returns — 30-day returns on unflown, as-new items. Crash damage isn't covered, but Shane stocks the spares to put it right.
You might also need
Notify me when back in stock
Leave your email and we'll let you know the moment this one's back on the shelf in Christchurch.
Questions before you buy? Shane's happy to talk motor choice, CG, or whether this model suits your flying site — no sales script, just straight answers from someone who fixes the real thing for a living.
ASK SHANE →