Lycoming Internal Tooth Lock Washer, 3/8 in, STD-678 (STD678)

Enjoy complimentary shipping on orders valued at $199 AUD or more. This offer is available to delivery addresses within Australia only. No delivery fee will be charged if your order meets or exceeds this amount.

All international orders incur a delivery fee. Within Australia, orders under the free shipping threshold also incur a delivery fee.

We charge only what it costs to ship your order, and sometimes absorb some cost to ensure you receive competitive rates.

Exact delivery costs are calculated at checkout after entering your shipping address, and vary depending on your location and country.

Most in-stock items ship the same day when your order is placed before 3:00 pm AEST on a weekday. Orders are dispatched from our warehouse and handed to the carrier that same day.

During peak periods some delays may occur, but we'll do our best to notify you in advance.

Not 100% satisfied? You can return eligible items within 60 days of purchase for a refund or exchange. We aim to make the process quick, simple and stress-free.

Exceptions: batteries, and items marked on their product page as not returnable for change of mind. Faulty or incorrect items are always covered.

Your payment information is protected using industry-standard PCI DSS security, strong encryption and ongoing system monitoring.

We accept major credit cards, PayPal and other trusted providers.

All orders are securely packed for safe transit. If your order arrives damaged or is lost in transit, you're covered by our full refund or replacement guarantee.

Every order includes tracking so you can follow its journey.

We never sell your personal information. Your details are used only to process your order and improve your experience.

We are committed to keeping your information safe and uncompromised.

Shop confidently knowing that if something goes wrong, we're here to help until the issue is resolved.