Precision Aluminum Bronze Acme Split Nuts

Short Description:

Product Specifications
Name： Aluminum Bronze Split Nut
Standard： ASTM B148 / B505, UNS C95400 / C95500 / C95800, RoHS Compliant, REACH Compliant
Material： C95400 (Aluminum Bronze), C95500 / C95800 (Nickel Aluminum Bronze)
Surface： Precision Threaded, Smooth Split Face, Optional Anti-Galling Coating
Thread Diameter： M20 – M200 (or equivalent UNC/Acme)
Overall Height： 30mm – 300mm
Thread Type： Trapezoidal (Acme), Metric, or Custom
Product Features: Exceptional seawater corrosion resistance · High tensile strength and load capacity · Superior wear and galling resistance · Easy opening for quick installation/removal · Excellent fatigue resistance · Good impact toughness · Reliable self-locking in vibration environments
Application Field: Marine propulsion screw systems, Valve actuators and gate drives, Heavy machinery lead screws, Offshore lifting equipment, Pump and compressor shafts, Industrial presses and jacks, Ship steering mechanisms, Chemical processing valves, Severe service transmission systems

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Aluminum Bronze Split Nut – Process & Quality Assurance Statement
Our aluminum bronze split nuts are engineered for applications requiring rapid assembly, high reliability, and resistance to harsh conditions, offering a robust alternative to solid nuts in maintenance-intensive environments.

Key process features

Production combines proven casting with precision machining for consistent performance and easy operation:
●Alloy Melting: Certified ingots are melted under controlled conditions to ensure exact composition and freedom from impurities.
●Casting Method: Centrifugal or sand casting creates dense blanks with excellent material integrity.
●Heat Treatment: Solution annealing optimizes strength, ductility, and corrosion resistance.
●Rough Machining: CNC turning establishes basic outer dimensions and split features.
●Precision Threading: Accurate thread cutting ensures smooth engagement and self-locking properties; split faces are machined for clean opening.
●Surface Finishing: Contact surfaces are honed; optional coatings applied for reduced friction.
●Final Assembly Check: Nuts are tested for easy opening/closing and secure fit before packaging.

Quality control system

● Complete traceability from melt batch to finished nut
● Material test certificates and dimensional reports supplied with each shipment
● Sample retention ≥3 years for third-party verification (SGS, BV, TÜV, etc.)
● 100% inspection of key parameters:
• Chemical composition (optical emission spectrometry)
• Mechanical properties (tensile and hardness testing on samples)
• Thread accuracy (go/no-go gauges and CMM; typical tolerance ±0.1mm)
• Split face alignment and surface finish (profilometer checks)
• Functional testing (opening force and load simulation on samples)
● Internal standards exceed ASTM B148 requirements. Typical C95800 properties: Tensile strength ≥690 MPa, Yield strength ≥345 MPa, Outstanding resistance to corrosive media and heavy cyclic loading.
● ISO 9001:2015 certified processes guarantee every aluminum bronze split nut delivers dependable operation and long service life in your critical transmission systems.