Blind rivet nut | Small countersunk head half-hex | A2
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Do you need to create a strong and permanent thread in thin-walled materials? The Blind Rivet Nut WS 9318 in A2 stainless steel (AISI 304) is the solution where standard threading is not possible. The small countersunk head allows the nut to be mounted flush with the material, while the semi-hexagonal shank prevents it from rotating during installation and use.
The blind rivet nut is installed quickly using standard tools and provides a stable thread even when you only have access from one side. Thanks to the A2 stainless material, it has good corrosion resistance and is therefore suitable for both indoor and outdoor use.
AREA OF APPLICATION
Perfect for sheet metal structures, thin-walled profiles, chassis construction, metal cabinets, machine parts, and installations. Common within the automotive industry, construction, electronics, ventilation systems, and general workshop production. The blind rivet nut provides a strong and vibration-resistant thread without the need for welding or through-bolts. Easy to install, requires no access from the rear, and provides a clean and durable fastening.
Watch video: Which blind rivet nut should you choose? Cylindrical, countersunk, or semi-hexagonal
TECHNICAL SPECIFICATIONS
Product type: Blind rivet nut
Standard: WS 9318
Quality: A2 (AISI 304) stainless steel
Material grade: Stainless A2
Thread: Not specified (available in several dimensions)
Grip range: Varies depending on dimension
Flange: Small countersunk head (small csk head)
Shank: Semi-hexagonal
Surface finish: Untreated (natural stainless steel)
FREQUENTLY ASKED QUESTIONS (FAQ)
What is the advantage of the semi-hexagonal shank on the blind rivet nut?
The semi-hexagonal shank (hex grip) is mounted in a punched or laser-cut hexagonal hole. This design provides a mechanical stop that effectively prevents the rivet nut from slipping or rotating in the material when tightening the screw with high torque, which is otherwise a common risk with completely round rivet nuts in smooth holes.
What does the small countersunk head mean for installation?
The small countersunk head (often called micro-head or reduced head) ensures that the rivet nut protrudes minimally from the material's surface. You get an almost completely flush contact surface without having to deburr or countersink the hole before installation, which saves time and facilitates mounting when attached components need to lie flat against the sheet metal.
When should you choose a blind rivet nut over traditional threading or a weld nut?
Blind rivet nuts are ideal for thin sheet metal, tubes, and profiles where the material is too thin to cut a durable thread directly into the base material. They only require access from one side (blind installation) and eliminate the need for welding, which prevents thermal deformation and damage to finished surface paintings or coatings.