Customization:
With 304 stainless steel construction, you can ensure corrosion resistance and durability in harsh environments, outperforming standard steel screws*.
With a pan head design, you can achieve secure fastening using standard screwdrivers while minimizing head stripping compared to flat-head alternatives*.
With lengths ranging from 4mm to 150mm, you can accommodate diverse applications, from precision electronics to heavy-duty construction projects*.
With adaptability to industries like construction, automotive, and electronics, you can address both indoor and outdoor needs, from delicate assemblies to heavy-load fastening*.
With RoHS certification, you can ensure compliance with environmental regulations and reduce health risks in manufacturing and consumer products*.
These OEM stainless steel pan head machine screws feature a half-thread anti-falling design for secure fastening in dynamic environments. Available in lengths from 4mm to 150mm and thread sizes from M2 to M24, they are engineered for precision applications across industries. Certified to RoHS standards and compliant with ISO, JIS, DIN, and GB specifications, these screws combine durability with customizable finishes like zinc-aluminum coating and cadmium plating.
Feature | Specification | Benefit |
---|---|---|
Material | 304 Stainless Steel (default) | Corrosion resistance, high tensile strength |
Head Type | Pan Head | Secure torque grip, reduced stripping risk |
Thread Design | Half-thread anti-falling | Prevents loosening under vibration |
Length Range | 4mm to 150mm | Customizable for diverse applications |
Surface Finishes | Zinc-Aluminum, Chrome, Anodizing, etc. | Enhanced corrosion resistance/aesthetics |
Certifications | RoHS, ISO 9001 (Advanced/Pro) | Environmental and quality compliance |
Thread Sizes | M2 to M24 | Universal compatibility with global standards |
Adjustable parameters include material (e.g., titanium for aerospace), length (from 4mm to 150mm), and surface finish (e.g., cadmium plating for extreme durability). Specify requirements for corrosion resistance, torque load, or aesthetic integration.
With half-thread anti-falling technology, these screws ensure secure fastening in machinery and automotive assemblies. Their pan head design provides consistent torque distribution, while finishes like zinc-aluminum coating extend lifespan in marine environments.
Parameter | Base Model | Advanced Model | Pro Model |
---|---|---|---|
Material | Steel | Stainless Steel 304 | Titanium |
Corrosion Resistance | Zinc Plated (-20% vs Pro) | Zinc-Aluminum (+20% vs Base) | Cadmium Plated (+40% vs Base) |
Max Length | 50mm | 120mm | 150mm |
Thread Precision | Class 6g | Class 5g | Class 4g |
Certifications | RoHS | RoHS + ISO 9001 | RoHS + MIL-SPEC |
Technical Breakthroughs:
Version Selection Guide:
Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
---|---|---|---|---|
Material Composition | Marine/Outdoor Equipment | Industry Standard: Carbon Steel (ASTM A36) Our Base: 304 Stainless Steel (ASTM A240) Our Advanced: 316 Stainless Steel (ASTM A276) | ▲▲▲ Corrosion resistance: Withstands 1000+ hours salt spray (ASTM B117) | ▲ Base: Moderate cost ▲▲ Advanced: Higher cost vs. carbon steel |
Surface Finish | Automotive/Consumer Electronics | Industry Standard: Zinc Plating (ISO 1461) Our Base: Zinc-Aluminum Coating (ASTM B633) Our Advanced: Chrome Plating (SAE AMS-QQ-P-235) | ▲▲▲ Durability: 2000+ abrasion cycles (per ASTM D4060) (Chrome: 30% harder than zinc) | ▲ Base: Limited aesthetic appeal ▲▲ Advanced: Requires specialized coating facilities |
Thread Standardization | Global Manufacturing | Industry Standard: ISO Metric (ISO 261) Our Base: Dual Metric/Inch (ISO 261 + ASME B1.1) Our Advanced: Custom Thread Tolerance (IT6 per ISO 286-2) | ▲▲▲ Compatibility: Fits 95% global machinery standards (IT6: ±0.01mm precision) | ▲ Base: Standard tolerance may require reaming ▲▲ Advanced: 2x cost of base |
Length Range | Heavy Machinery/Small Electronics | Industry Standard: 4mm-50mm (ISO 2329) Our Base: 4mm-150mm (ISO metric) Our Advanced: 4mm-200mm (Metric/Inch hybrid) | ▲▲▲ Versatility: Covers 4mm-200mm (e.g., 150mm for deep mounting) (150mm: Best for structural beams) | ▲ Base: Limited to 150mm max ▲▲ Advanced: Requires custom tooling for longest lengths |
Head Design | Appliance Assembly | Industry Standard: Flat Head (ASME B18.2.1) Our Base: Pan Head (ASME B18.2.1) Our Advanced: Hex Socket (DIN 931) | ▲▲▲ Installation: 30% torque resistance improvement (Pan vs. Flat) (Hex Socket: Tool access in tight spaces) | ▲ Base: Requires Phillips driver ▲▲ Advanced: Higher unit cost |
Corrosion Resistance | Chemical Plants | Industry Standard: Uncoated Steel (ASTM A36) Our Base: Passivation (ASTM A967) Our Advanced: PTFE Coating (MIL-C-83435) | ▲▲▲ Chemical Exposure: Resists 50+ chemicals (ASTM D543) (PTFE: 0.05 friction coefficient) | ▲ Base: 200hr salt spray vs. 1000hr for Advanced |
⭐⭐⭐⭐⭐ James Carter - Industrial Maintenance Engineer
"These pan head screws are a game-changer for our facility. We installed the Advanced Model (304 stainless steel, zinc-aluminum coating) on outdoor utility covers exposed to heavy traffic and weather fluctuations. After 5 months of use, zero loosening or corrosion—unlike the standard screws we used before that failed within 3 months. The half-thread design really holds under vibration from passing vehicles. Installation was smooth with our Phillips drivers, and the M8 x 70mm size fit perfectly in our manhole ring assemblies."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ Lena Park - Automotive Manufacturing Plant
"We integrated the Pro Model (titanium, cadmium-plated, M5 x 40mm) into our engine compartment fastening lines for sensor housings. The Class 4g thread precision made alignment flawless, and the RoHS compliance was critical for our export models. Even under constant thermal cycling and vibration, these screws haven’t budged. The pan head design allows consistent torque without cam-out—something we struggled with flat heads. Worth every penny for high-reliability zones."Purchase Date: November 2024 | Usage Period: 7 months
⭐⭐⭐⭐☆ Marcus Thompson - Infrastructure Contractor
"Used the Base Model (zinc-plated steel, M12 x 100mm) across several road-side manhole installations. The anti-falling ring nut system works as advertised—no incidents of dislodgement even after heavy truck traffic. I’d rate it 5 stars if not for the slightly limited finish options for aesthetic applications. But for pure function and durability in harsh environments, these outperform competitors. Delivery was fast, and custom length support helped us match legacy hardware."Purchase Date: September 2024 | Usage Period: 8 months
⭐⭐⭐⭐⭐ Elena Rodriguez - OEM Parts Supplier
"We supply automation equipment globally and needed a reliable screw solution for control panel mounting. Chose the Advanced Model (304 SS, blue anodized finish, M4 x 12mm) for its dual metric/inch compatibility and visual differentiation. The pan head allows flush mounting without damaging enclosure surfaces, and the RoHS certification cleared our compliance checklist instantly. After 4 months in service, no field failures reported. Customer support also helped us finalize thread tolerance specs—very responsive."Purchase Date: April 2025 | Usage Period: 3 months
⭐⭐⭐⭐☆ David Lin - Marine Fabrication Specialist
"Installed these on a boat deck hatch system using M6 x 50mm screws with chrome plating. Saltwater exposure is brutal, but so far—after 6 months at sea—no rust or pitting. The half-thread design provides solid grip without over-penetration into composite layers. Only downside: the Phillips drive can strip if over-torqued, so we now use torque-limited drivers. Still, far better than the plastic screws we tried earlier that cracked in UV light."Purchase Date: January 2025 | Usage Period: 6 months
Average Rating: 4.8/5 ⭐ (89 Reviews)
Michael Wu - Urban Infrastructure Safety Expert
"In my 15 years evaluating public works hardware, few fasteners deliver both safety and longevity like these anti-falling manhole screws. The half-thread design combined with 304 stainless steel addresses two major failure points: vibration-induced loosening and corrosion. For municipalities upgrading aging utility covers, this is a cost-effective, long-term solution that meets ISO and RoHS standards—rare in this category."
Dr. Anita Patel - Automotive Materials Specialist
"Modern vehicles demand fasteners that are lightweight, corrosion-resistant, and vibration-secure. The titanium Pro Model with cadmium plating exceeds typical OEM specs for underhood applications. Its micron-level thread precision (Class 4g) ensures consistent preload, reducing fatigue risk. I recommend this series for EV battery enclosures and sensor mounts where reliability is non-negotiable."
Posted: 2 days ago
"Using these in conveyor motor mounts—zero loosening after weeks of continuous operation. The pan head holds torque better than any hex socket we’ve tested."
Posted: 1 week ago
"Needed M10 x 138mm screws for legacy manhole frames. Supplied exact specs and received them in 10 days. Quality is industrial-grade. Will reorder."
Posted: 3 weeks ago
"Screws perform flawlessly in outdoor telecom enclosures. Only note: labeling on boxes could be clearer for inventory tracking."
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