Short Rod Nut

SAE 45° series: refers to the hydraulic connector system that complies with the American Society of Automotive Engineers standard (SAE J514). Its core feature is the use of a 45° conical sealing surface. This seal is achieved by tightly pressing the 45° conical surface on the connector body with the 45° conical surface inside the nut to produce a metal-to-metal seal, usually without the need for additional gaskets.

Space savings: Short nuts provide valuable extra clearance in tight installation locations, around obstructions, or when piping needs to be closely packed.
Weight savings: Slightly less weight than long nuts (although not usually a top consideration in a fitting).
Potential cost savings: Less material is used, theoretically resulting in slightly lower material costs.

Hydraulic systems with limited space (medium and low pressure).
Compact pneumatic systems.
Internal pipelines of industrial machinery.
Local pipelines of automobiles and construction machinery.
Connections of instruments and meters.
Refrigeration and air conditioning systems (for refrigerants and lubricants compatible with brass).
Parts that require frequent disassembly and maintenance and have limited space.

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