1.Exceptional Mechanical Performance – Machined from high-grade alloy steel (e.g. SAE 4130) and quenched & tempered, these Phillips countersunk flat head machine screws offer tensile strengths exceeding 800 MPa and yield strengths above 600 MPa, with a hardness of 28–34 HRC. The precisely formed 82° countersunk head ensures reliable, flush seating in pre-countersunk holes, while a uniform zinc-plated or black-oxide finish provides moderate corrosion protection and maintains tight dimensional tolerances.
2.Broad Application Versatility –Wind power industry, the aerospace industry, office equipment industry, petrochemical industry, the electronics industry, the communications industry, shipbuilding industry, machinery, etc.
Engineered for fastening into tapped holes or with nuts, these machine screws excel in electronics enclosures, automotive assemblies, instrumentation panels, appliance housings, metal chassis, furniture hardware, and light industrial machinery. The flat head profile delivers a clean, low-profile finish—critical for aesthetic, safety, and space-limited applications—while standard metric sizes (M2–M6) cover a wide range of design requirements.
3.Fast, Reliable Installation – The cruciform Phillips drive delivers positive bit engagement and minimizes cam-out, reducing installation errors and bit wear. Accurate thread tolerances (6g/6H) prevent cross-threading and ensure smooth insertion into pre-tapped holes or nuts. The self-centering head seats automatically, eliminating the need for secondary countersinking tools and speeding up both manual and power-drive assembly.
4.Certified Quality & Consistency – Produced in ISO 9001-certified facilities, each batch undergoes rigorous dimensional inspection (±0.1 mm), hardness testing, drive torque validation, and plating-thickness measurement (≥8 μm for zinc). Salt-spray resistance meets or exceeds 48 hours per ASTM B117. Full material traceability and batch-specific certificates are available for critical applications requiring documented supply-chain integrity.
| Coating | Black, color customizable |
|---|---|
| Diameter | M3, M4, M6, M8, M10, M12, M14, M18, 1/4-20, 10#-24, 10#-32, 5/16-18, 8#-32 |
| Drive Type | Philips Cross Drive |
| Head Type | Flat Head |
| Length | 1-1/2, 1-1/4, 1-3/4, 1'', 1/2, 100, 110, 16, 20, 25, 3/4, 3/8, 30, 35, 40, 45, 5/8, 50, 60, 7/8, 70, 80, 85 |
| Manufacturer | GUXIANG |
| Material | Alloy Steel, Carbon Steel |
| Package Size(cm) | 30*20*20 |
| Shipping Term | EXW Guangdong Province |
| SKU | 1，000,000 pieces |
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