🔧 M1.4–M12 Low Head Socket Cap Screws – A2 Stainless Steel, Space‑Saving Design for Tight Clearances
You’re designing a compact 3D printer, a slim electronic enclosure, or a piece of machinery where head height is critical – a standard socket cap screw sits too tall. These low head socket cap screws (also known as thin head or reduced height cap screws) give you the same hex drive strength but with a head that’s about 40‑50% lower. Made from A2 stainless steel (304), they resist rust, heat, and corrosion – perfect for outdoor, marine, and industrial environments. Available in diameters from M1.4 up to M12, with a wide range of lengths (select from dropdown). Fully threaded for maximum grip. Ideal for tight spaces, panels, and applications where every millimeter counts.
✨ Key Features – Low Head Socket Cap Screws (A2 Stainless)
- 🔧 Low profile head (reduced height) – Head height is approx. 40‑50% lower than standard socket cap screws. Perfect for clearance‑limited assemblies.
- 🔩 Hex socket (Allen) drive – Allows high torque without cam‑out. Clean recess won’t collect debris.
- 🛡️ A2 stainless steel (304) – Excellent corrosion resistance, oxidation resistance, heat resistance, high strength and toughness.
- 📏 Wide metric range M1.4 to M12 – From micro‑screws for watches up to medium duty for machinery and marine hardware.
- 📐 Fully threaded, length measured under head – Example: M5 x 10mm means thread diameter 5mm, length from under head to tip is 10mm. Fully threaded for maximum grip.
- ⚙️ ISO 7380‑2 / DIN 7984 standard – Precision dimensions, consistent quality. Low head design reduces weight and profile.
- 🔩 Versatile use – 3D printers, CNC machines, electronic enclosures, marine hardware, bicycle components, and industrial equipment.
📏 Dimensional Specifications – Low Head Socket Cap Screws (M1.4–M12)
| Thread Diameter (M) |
Thread Pitch (mm) |
Head Diameter (dk) – mm |
Head Height (k) – mm |
Hex Socket Size (s) – mm |
| M1.4 |
0.3 |
2.5 |
0.8 |
1.3 |
| M1.6 |
0.35 |
3.0 |
1.0 |
1.5 |
| M2 |
0.4 |
3.8 |
1.2 |
1.5 |
| M2.5 |
0.45 |
4.5 |
1.5 |
2.0 |
| M3 |
0.5 |
5.5 |
1.8 |
2.0 |
| M4 |
0.7 |
7.0 |
2.2 |
2.5 |
| M5 |
0.8 |
8.5 |
2.8 |
3.0 |
| M6 |
1.0 |
10.0 |
3.3 |
4.0 |
| M8 |
1.25 |
13.0 |
4.4 |
5.0 |
| M10 |
1.5 |
16.0 |
5.5 |
6.0 |
| M12 |
1.75 |
18.0 |
6.5 |
8.0 |
📐 Lengths available: typical range from 3mm to 60mm (under head). Select exact size from dropdown. All screws fully threaded. Dimensions based on ISO 7380‑2 / DIN 7984. Please allow minor manual measurement errors.
📋 Why A2 Stainless Steel for Low Head Screws?
| Property |
Benefit |
| Corrosion resistance |
Excellent – resists rust in outdoor, humid, and coastal environments. No plating needed. |
| Strength |
High tensile strength (A2‑70 ~700 MPa). Withstands high torque despite lower head height. |
| Heat & oxidation resistance |
Suitable for applications up to moderate temperatures (e.g., engine compartments, industrial equipment). |
| Magnetic |
Almost non‑magnetic (slightly magnetic after cold working – normal for 304). |
❓ Frequently Asked Questions – Low Head Socket Cap Screws
1. How do low head socket screws differ from standard socket cap screws?
Low head screws have a shorter head height (typically 40‑50% lower) than standard DIN 912 cap screws. This makes them ideal for applications with limited vertical clearance. However, the hex socket is shallower, so maximum torque is slightly lower. For most light to medium duty applications, the strength is still excellent.
2. How do I measure the length of a low head socket screw?
Length is measured from the underside of the head to the tip. The head itself is NOT included. So an “M5 x 10mm” screw has a 10mm long threaded shaft under the head. All our lengths follow this standard.
3. Are these screws fully threaded? What about longer lengths?
Yes – all screws in this range (M1.4 to M12, up to the maximum length) are fully threaded from under the head to the tip, giving you maximum grip in blind holes or when using nuts.
4. Can I use these screws outdoors? Will they rust?
A2 stainless steel (304) is highly corrosion‑resistant and suitable for outdoor use in most environments – rain, humidity, and coastal areas. For continuous saltwater immersion, consider A4 (316) stainless, but for general outdoor and marine‑adjacent applications, A2 is excellent and will not rust.
5. What hex key size do I need for each screw?
Refer to the table above. For example: M3 uses 2.0mm, M4 uses 2.5mm, M5 uses 3.0mm, M6 uses 4.0mm, M8 uses 5.0mm, etc. Always use a quality hex key that fits snugly.
6. Do you offer these screws in other materials like carbon steel or titanium?
This listing is for A2 stainless steel. We also carry carbon steel and other materials – please check our store or contact us for custom orders.
