The TM Large Flat Head Screw (JIS B1111-1996) is a precision fastener that features a wide, thin umbrella-shaped head. In particular, the tm flat head screw has an enlarged head that is 1.5–2 times the thread diameter. As a result, it distributes load evenly and protects soft materials such as plastic, wood, and thin metal from cracking or deformation.
Moreover, manufacturers produce the tm flat head screw using MLO8AI low-carbon steel or SUS304/316 stainless steel. The screw includes high-precision 6g threads, and this ensures smooth engagement during installation. In addition, surface treatments such as zinc plating, Dacromet, and phosphating improve corrosion resistance.
Furthermore, the tm flat head screw supports efficient assembly. It does not require pre-drilled countersinks or washers. At the same time, the cross-slot head allows both manual and automated installation, which improves production efficiency.
In terms of specifications, the tm flat head screw is available in sizes from M2 to M16, with lengths ranging from 5 to 100 mm and custom options available. Therefore, it is widely used in home appliances, furniture, electronics, light industrial products, and thin-walled mechanical components. Overall, the tm flat head screw delivers reliable fastening performance, strong corrosion resistance, and easy installation.
| Parameter | Details |
|---|---|
| Standard | JIS B1111-1996 |
| Product Type | Large flat head machine screw |
| Head Structure | Wide, thin umbrella-shaped head |
| Material & Strength | MLO8AI low-carbon steel (4.8), SUS304 stainless steel (A2-70), SUS316 stainless steel (A4-70) |
| Thread Type | Metric coarse (default), fine threads customizable; 6g accuracy, 60° angle, ISO 68-1 pitch |
| Slot Type | Cross-slot (PH/PZ), optional hex or Torx; optimized depth for torque efficiency |
| Surface Treatment | Blue/white zinc (48h salt spray), color zinc (72h), Dacromet (800h), black oxide, phosphating, stainless passivation |
| Size Range | M2–M16 diameter, 5–100 mm length (customizable), full thread default; half thread optional |
| Applications | Fastening soft or thin materials: plastic, wood, thin metal; widely used in home appliances, furniture, electronics, light industry, thin-walled machinery |
| Installation Advantage | No pre-drilled countersink or washers needed; manual or automated assembly; efficient, stable, and reliable |
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