No burrs, cracks or deformation on housing; uniform surface treatment without scratches or oxidation.
Seal rings have good elasticity, no hardening/cracks; proper size without deformation or misalignment.
Threads are smooth without deformation or damage; easy to assemble/disassemble with no stuck or rough feel.
Uniform plating on contact terminals without peeling, blistering or uneven thickness; ensures corrosion resistance.
Technical Note: For critical applications, conduct sample testing (contact resistance, insulation resistance, torque) to verify compliance with specifications before bulk procurement.