Stainless Steel 316 CNC Machined Hanging Ring Screws

Product Specification

Stainless Steel 316 Hanging Ring Screws - CNC Machined High-Strength Fasteners

Product Overview : Stainless Steel 316 CNC Machined Hanging Ring Screws

Our Stainless Steel 316 Hanging Ring Screws are precision-engineered fasteners designed for superior strength, reliability, and corrosion resistance. Manufactured using advanced Computer Numerical Control (CNC) machining processes, each screw guarantees exceptional dimensional accuracy, consistent quality, and flawless thread integrity.

Ideal for overhead lifting, rigging, and secure suspension tasks, these high-strength eye bolts provide a safe and dependable point of attachment. The use of AISI 316 stainless steel makes them exceptionally resistant to corrosion, pitting, and cracking in harsh environments, including exposure to chemicals, saltwater, and extreme temperatures.

Key Features & Benefits:

• Unmatched Corrosion Resistance: Constructed from AISI 316 Stainless Steel (Marine-Grade), offering excellent performance in corrosive environments, far superior to standard 304 grade.

• Superior Strength & Durability: CNC machining from solid bar stock creates a continuous grain flow, resulting in higher tensile strength and a greater workload limit compared to cast or forged alternatives.

• Precision Engineering: The CNC process ensures perfect thread engagement, a smooth load-bearing surface, and strict adherence to dimensional tolerances. This eliminates weak points and ensures consistent performance.

• Enhanced Safety: The machined finish allows for thorough inspection for defects, providing critical assurance for overhead lifting and safety-critical applications.

• Versatile Applications: Perfect for marine hardware, architectural installations, theatrical rigging, industrial machinery, automotive systems, and any application where reliability is paramount.

Specifications

• Material: AISI 316 Stainless Steel

• Manufacturing Process: Precision CNC Machined

• Finish: Natural Mill Finish (can be polished upon request)

• Standards: Can be manufactured to meet or exceed relevant ISO, ASTM, or DIN standards.

• Availability: Custom diameters, thread sizes, and ring diameters available. OEM services offered.

Product Specifications Table

Frequently Asked Questions (FAQ)

1. Material & Properties

Q1: Why is AISI 316 stainless steel better than 304 for these screws?
A: AISI 316 stainless steel contains molybdenum, which significantly increases its resistance to corrosion, particularly from chlorides and acids. This makes it the "marine-grade" choice, ideal for environments with saltwater, pool chemicals, industrial solvents, or exposure to harsh weather. 304 is adequate for general purposes, but 316 is superior for demanding or corrosive applications.

Q2: What is the maximum weight these screws can hold?
A: The safe working load (SWL) or working load limit (WLL) varies significantly by size (thread diameter). It is critical to never exceed the SWL. The SWL is typically 1/4 or 1/5 of the minimum breaking load (a 4:1 or 5:1 safety factor). Please refer to the specific Load Ratings Table in our product specifications for each size. For example, an M10 screw may have a SWL of 6.6 kN (~673 kg). Always consult the technical data for your specific model.

Q3: What is the temperature range for these fasteners?
A: AISI 316 fasteners are generally rated for continuous service temperatures from -60°C to 200°C (-76°F to 392°F). For short-term exposure, they can handle higher temperatures, but mechanical properties may start to degrade above 400°C (752°F).

2. Manufacturing & Quality

Q4: What is the advantage of CNC machining over casting or forging?
A: CNC machining from solid bar stock eliminates the porosity, inclusions, and potential internal voids that can occur in cast products. This results in:

• Higher Strength: A continuous grain structure provides superior tensile and fatigue strength.

• Greater Reliability: No hidden internal defects, which is critical for safety.

• Precision: Exceptional dimensional accuracy and perfect threads for secure fastening.

Q5: Do you provide material certification?
A: Yes. We can supply a Mill Test Certificate (MTC) or Certificate of Conformity 3.1 with your order, which verifies the chemical composition and mechanical properties of the raw material, ensuring it meets AISI 316 standards.

3. Application & Usage

Q6: What is the correct way to install a hanging ring screw?
A: Incorrect installation is a major cause of failure.

1. Pilot Hole: Drill a pilot hole slightly smaller than the root diameter of the screw's thread.

2. Engagement Depth: Ensure the threaded shank is fully engaged in the material. A general rule is an engagement depth of at least 1.5 times the thread diameter (e.g., for an M10 screw, engage at least 15mm of thread).

3. Tightening: Tighten firmly using a wrench on the hexagonal shoulder (if present) or the ring itself. Do not overtighten, as this can gall the stainless steel threads.

4. Alignment: The load should be applied along the axis of the screw. Avoid side-loading or angular forces unless the design is specifically for it.

Q7: What applications are these best suited for?
A: They are ideal for:

• Marine: Deck hardware, boat rigging, sailboat fittings.

• Architectural: Hanging lighting fixtures, artwork, signage, ceiling systems.

• Industrial: Securing equipment, machinery components, chain hoists, rigging.

• Automotive: Tie-down points, custom fabrication.

• Theatrical: Stage rigging for lights and scenery (within rated limits).

4. Ordering & Customization

Q9: Can I order custom sizes or configurations?
A: Absolutely. As a specialist in CNC machining, we excel at custom orders. We can produce:

• Non-standard thread sizes (e.g., UNF, BSW) and lengths.

• Custom ring diameters (O.D.) and thicknesses.

• Special markings or finishes (e.g., electropolishing, passivation).

• Please contact us with your drawings or specifications for a custom quote.

Q10: What is your minimum order quantity (MOQ)?
A: Our standard MOQ is low, often starting at 1000 pieces for common sizes.

Q11: What is the lead time for samples and production orders?
A: Sample orders are typically processed and shipped within 3-5 working days. Production order lead times are generally 30-45 days after order confirmation, depending on order volume and customization.