The SAE J512 standard serves as a comprehensive guide for various types of tube fittings used in the automotive industry, as well as in appliances and other related fields. This standard encompasses a range of fitting types, each designed to meet specific requirements. Below is a detailed look at what the standard covers:
Types of Fittings Covered:
- Flare-Type Fittings: These fittings have a flared end that provides a secure connection.
- Inverted Flare-Type Fittings: These are similar to flare-type fittings but have an inverted flare.
- Tapered Sleeve Compression-Type Fittings: These fittings utilize a tapered sleeve to secure the connection.
- Single and Double 45-Degree Flares on Tubing: These are specialized types of flare fittings that feature either a single or double 45-degree flare.
How SAE Male Fittings Work:
SAE male fittings come with a 45-degree flare that seals against a 45-degree seat in female fittings. Alternatively, they can also seal against 45-degree flared tubing using a nut and sleeve.
Compatibility with JIC 37-Degree Flare:
Interestingly, the thread forms for sizes 7/16-20, 1/2-20, 3/4-16, and 7/8-14 in the SAE J512 standard are identical to those in the JIC 37-degree flare standard. Some fittings even offer compatibility with both JIC 37-degree and SAE 45-degree seats.
Dimensional Specifications:
The standard provides complete dimensional specifications for each type of tube fitting, ensuring consistent quality and compatibility.
Performance Requirements:
For those interested in reusable fittings, especially for automotive air brake systems, the SAE J131 standard outlines the performance requirements.
Hydraxio is a leading manufacturer of stainless steel hydraulic fittings, please feel free to contact our sales team for more details.
