Phillips Flange Head Trilobular Screw
The Cross Recess Hex Flange Serrated Underside Screw with Triangular/Buttress Thread is a high-performance fastener integrating convenient driving (cross/hex), pressure distribution (flange), powerful vibration resistance (serrated flange), and high-tensile locking (triangular/buttress thread). It is the ideal solution for preventing connection failure under extreme vibration, shock, and high loads, widely used in automotive, machinery, engineering, and other fields demanding ultimate connection reliability
Key Features
✅ Flush Aerodynamic Surface：90° head angle (ISO 10642)
✅ Zero Cam-Out Torque：≥12N·m at M6 size (ISO 10664)
✅ Vibration Immunity：＞85% residual clamp load (ISO 16130)
✅ Extreme Environment：Ti6Al4V (650℃)/A4-80 SS (2000h salt spray)
Technical Data
|
Parameter |
Requirement |
Inspection Std. |
|
Thread Type |
Buttress Thread |
DIN 513 / GB/T 6559 |
|
Flange Diam. (D) |
≈2.5 × Nominal Diam. (d) |
DIN 6921 |
|
Flange Thick. (h) |
≥0.15 × Nominal Diam. (d) |
|
|
Serration Density |
16-24 teeth/circumference, Tooth height 0.1-0.3mm |
Enterprise Std. |
|
Cross Recess Depth |
Compliant with Phillips PH or Pozidriv PZ series |
ISO 7045 |
Parameter
Key Applications:
Tri-Lobular Thread Screws leverage their tri-lobular thread cold-forming locking mechanism to address fastener loosening failures caused by high-frequency vibration/dynamic loads. They are indispensable in the following fields:
|
Industry |
Typical Application |
Failure Consequence |
Solution |
|
Automotive |
Engine mounts, Transmission housings |
Bolt loosening may trigger accidents |
M8-M12 high-strength tri-lobular screws (Grade 10.9) |
|
Rail Transport |
Railway signaling equipment, Carriage connectors |
Vibration-induced control system failure |
A4 stainless steel tri-lobular screws + Anticorrosive coating |
|
Aerospace |
Avionics equipment brackets |
Extreme vibration causing device displacement |
Titanium alloy tri-lobular screws (40% weight reduction) |
|
Industrial Robots |
Joint bearing fixation units |
Micromovement from repetitive motion |
M4-M6 micro-sized tri-lobular screws |
SERIVCE
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Swift resolution for all technical issues & product inquiries.
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Customizable spec sheets for informed purchasing decisions.
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Branded/secure packaging with photo confirmation before dispatch.
Premium Quality at Competitive Pricing
Industry-leading products optimized for value & performance.
CONTACT US
HANDAN BOEN FASTENERS MANUFACTURING CO.,LTD
Email:shaun@boenfasteners.com
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