M5 positioning screws, semi-threaded screws, and special-head adjusting screws - high-precision marine hardware

1. Typical Applications in Shipbuilding Industry (Specific Products)

1.1 Hull Structure & Deck System

• Marine Flat-head Eye Bolts with Hole

  Application: Connection of deck railings, hatch covers, ladders, bollards, ventilators and other movable/detachable structures.

  Characteristics: Flat head with center hole, suitable for split-pin or wire locking; resistant to severe vibration during navigation.

  Material: 316L stainless steel, duplex stainless steel, titanium alloy, resistant to seawater and salt-spray corrosion.
• Flat-head Flange Screws

  Application: High-strength fastening for hull shell stiffeners, bulkhead frames, deck machinery foundations.

  Characteristics: Large flange surface distributes stress, prevents plate crushing, and adapts to irregular mounting surfaces.

1.2 Marine Power & Propulsion System

• Flat-head Positioning Screws for Main Engine & Gearbox

  Application: Positioning and fastening of engine cylinder heads, crankcases, gearboxes, thrust bearing seats.

  Characteristics: Side flat structure ensures precise positioning, withstands explosion pressure and torsional impact.
• Flat-head Locking Screws for Propeller Shafting

  Application: Locking and anti-loosening for propellers, intermediate shafts, stern shaft sealing devices.

  Characteristics: Cooperate with shaft keyways/flats to transmit high torque and prevent rotation loosening.

1.3 Marine Piping & Valve System

• Flat-head Screws for Pipe Clamps & Supports

  Application: Fixing of seawater pipes, fuel pipes, hydraulic pipes, fire-fighting pipes.

  Characteristics: Flat head fits the clamp surface, suitable for narrow engine room spaces.
• Flat-head Screws for Valve Bonnet

  Application: Fastening for marine globe valves, check valves, safety valves, pressure reducing valves.

  Characteristics: Anti-rotation flat ensures even loading of sealing surfaces, resistant to medium corrosion.

1.4 Marine Electrical & Outfitting Equipment

• Flat-head Screws for Electrical Boxes & Equipment Foundations

  Application: Mounting of bridge consoles, radar & navigation equipment, emergency generators, lighting.

  Characteristics: Anti-loosening, suitable for frequent vibration, ensuring reliable electrical connection.
• Flat-head Screws for Marine Furniture & Interior

  Application: Fixing of cabin furniture, galley equipment, sanitary units.

  Characteristics: Low-profile flat head, polished/passivated surface, suitable for humid indoor environment.

1.5 Offshore Engineering & Special Vessels

• Flat-head Lifting Eye Screws

  Application: Lifting and fixing of offshore modules, crane booms, life-saving equipment.

  Characteristics: Integrated flat and lifting eye, high load-bearing capacity.
• Flat-head Sealing Screws for Underwater Equipment

  Application: Pressure-resistant sealing for ROVs, diving bells, subsea valves.

  Characteristics: Face seal with O-ring, withstands high pressure; titanium alloy for anti-magnetic and corrosion resistance.

We have introduced advanced equipment and technology from Japan and Germany (CNC 5-axis and 6-axis machines) to better serve our customers' needs.

Our maximum processing outer diameter is 60, and the minimum control tolerance is 0.001. We have Japanese CNC Tsugami, CNC Citizen, multi-station cold extrusion forming machines, 500T press machines, casting equipment, and various process equipment, which can effectively provide customers with the best technical solutions.

Our company has a total of 300 employees, including 20 technicians, 10 engineers, and 15 quality control personnel. We have over 300 pieces of equipment.

Our company implements 8S management and has passed ISO9001 and TS16949 automotive certifications.

Our customers include , bo-sch, Foxconn, Motors, Husqvarna, Shimano, NVIDIA, DJI Drones, Siegenia, and Cater-pillar.