🌟 Star Internal Tooth Washer – Flush Fit Locking Washer with Internal Serrations | Neo Fasteners
Neo Fasteners manufactures and supplies precision-grade Star Internal Tooth Washers, also known as Internal Star Lock Washers, engineered to provide secure fastening and anti-loosening protection in compact, flush-mounted assemblies. Featuring radial inward-facing teeth, these washers bite into both the fastener head and mating surface, creating a reliable locking effect without protruding beyond the washer's outer edge.
Ideal for electronics, electrical panels, PCBs, telecom equipment, enclosures, and automotive interior assemblies, internal star washers offer a clean look, excellent conductivity, and dependable vibration resistance.
🔧 Key Features
- Internal Radial Teeth: Provide locking grip around fastener shank
- Flush, Aesthetic Fit: No external teeth — perfect for tight or visible assemblies
- Anti-Loosening: Resists back-off due to vibration, shock, or movement
- Conductive Contact: Maintains grounding in electrical assemblies
- Ideal for Flat Head & Round Head Screws
📐 Technical Specifications
- Size Range: M2 to M24 (Metric) | #4 to 1" (Inch)
- Outer Diameter (OD): 5 mm to 35 mm
- Thickness: 0.3 mm to 2 mm
- Teeth Type: Uniform inward-pointing serrations
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Standards:
- DIN 6798 J – Internal Tooth Washer
- ISO 8812 / IS 5370
- BS 4464 / ANSI B18.21.1
🧱 Material Options
- Mild Steel (MS) – Cold Rolled (CRCA) or Hot Rolled
- Spring Steel (Hardened & Tempered)
- Stainless Steel – SS 304 / SS 316 / SS 202
- Brass – For anti-corrosive or decorative applications
- Copper / Phosphor Bronze – For electrical contact and conductivity
- Beryllium Copper / Nickel Alloys – On request for EMI shielding
🎨 Finish Options
- Zinc Plated (White / Yellow / Blue)
- Tin Plated (preferred for electrical grounding)
- Nickel / Chrome Plated
- Black Oxide
- Passivated (for stainless steel variants)
- Self-Color (Plain, uncoated for secondary processing)
⚙️ Applications
- Electrical terminals, earthing & wiring
- Control panels & distribution boards
- Printed circuit boards (PCB)
- Telecommunication devices & enclosures
- Automotive dashboards & assemblies
- Consumer appliances & electronics
- Robotics & compact control modules
- Sheet metal & fabricated housings
📦 Packaging & Delivery
- Available in polybags, jars, or industrial cartons
- Custom OEM branding, barcodes & labeling available
- ISO 9001:2015 certified, RoHS compliant
- Material Test Certificates (MTC) on request
- Standard sizes in ready stock
- Rapid delivery across India and export-ready packaging
📞 Contact Us
📧 Email: neofasteners@yahoo.com
📞 Call/WhatsApp: +91-96328 07665
🌐 Website:
🔗 neofasteners.com (Google Site)
📍 Location: Bengaluru, Karnataka, India