860-Piece M1.2–M3 Black Carbon Steel Countersunk Screw Kit
860-Piece M1.2–M3 Black Carbon Steel Countersunk Screw Kit
860-Piece Black Cross Flat Head Screw Kit – M1.2 to M3 Carbon Steel
This comprehensive 860-piece assortment of black countersunk (cross flat head) screws covers every size from M1.2 to M3, giving you everything you need for eyeglasses repair, computer maintenance, precision instrument assembly, and a wide range of small-scale metalworking projects. Made in Mainland China from 4.8-grade carbon steel with an electrolytic oxide finish for lasting durability.
Key Features
- 860-Piece Variety Pack: Sizes ranging from M1.2 to M3 — one kit covers virtually every micro-fastening task.
- 4.8-Grade Carbon Steel: Engineered for reliable strength in demanding precision applications.
- Electrolytic Oxide Treatment: Forms a dense protective layer that resists rust, corrosion, and everyday wear.
- Countersunk (Flush) Head Design: Sits perfectly flush with the surface for a clean, professional finish in tight spaces.
- Phillips Cross Drive: Compatible with standard Phillips-head screwdrivers and precision driver sets.
- Multi-Purpose: Ideal for eyeglasses repair, laptop and PC maintenance, cameras, watches, hobby electronics, and precision instruments.
Specifications
| Material | Carbon Steel (4.8 Grade) |
| Color | Black |
| Size Range | M1.2 – M3 |
| Drive Type | Phillips Cross (Flat Countersunk Head) |
| Quantity | 860 Pieces |
| Kit Dimensions | 19.6 × 13.3 × 2.2 cm |
| Country of Origin | Made in Mainland China |
Package Contents
- 860 × Black Carbon Steel Countersunk Phillips Screws (assorted M1.2–M3)
Please Note
- Actual colour may vary slightly from on-screen images due to monitor settings and lighting conditions.
- Please allow a slight manual measurement deviation for stated dimensions.
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Frequently Asked Questions
Q: What sizes are included in the 860-piece carbon steel screw kit?
A: The kit includes an assorted selection of black countersunk Phillips screws spanning sizes M1.2 through M3. This range covers the most common micro-fastener sizes used in eyeglasses repair, laptop maintenance, cameras, and small precision instruments.
Q: Are these screws suitable for eyeglasses and computer repair?
A: Yes — the M1.2–M3 size range is specifically suited for eyeglasses frames, laptop hinges, PC components, and other precision assemblies. The countersunk flat head sits flush with the surface, making them ideal for thin frames and tight enclosures.
Q: What does the electrolytic oxide treatment do?
A: The electrolytic treatment creates a dense black oxide layer on each screw, significantly improving resistance to rust and surface wear. This extends the working life of the screws even in environments with minor moisture exposure.
Q: Do I need a special screwdriver for these screws?
A: No special tools are required. These are standard Phillips cross-head screws, compatible with any precision Phillips-head screwdriver or a standard eyeglasses/electronics repair driver set.