[{"id":189145677960,"handle":"coupon-eligible","title":"Coupon Eligible","updated_at":"2026-02-10T09:35:13-05:00","body_html":"","published_at":"2020-12-14T21:11:58-05:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"vendor","relation":"not_equals","condition":"Lightspeed Aviation"}],"published_scope":"global"},{"id":174246985864,"handle":"david-clark","title":"David Clark","updated_at":"2026-02-09T22:09:46-05:00","body_html":"\u003cp data-mce-fragment=\"1\"\u003eDavid Clark Company has pioneered air and space crew protective equipment design, development and manufacture since 1941, with products ranging from anti-G suits to space suits.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eDavid Clark Company's tradition of providing crew protective equipment for leading edge, manned aerospace programs continues into the future, as our designers apply their expertise to passenger and crew protection in the commercial space flight market.\u003c\/p\u003e","published_at":"2020-03-11T14:53:53-04:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"vendor","relation":"equals","condition":"David Clark"}],"published_scope":"web","image":{"created_at":"2020-09-29T23:30:06-04:00","alt":"Shop for David Clark products.","width":800,"height":800,"src":"\/\/www.pilotshq.com\/cdn\/shop\/collections\/David_Clark_Logo1.jpg?v=1672277318"}},{"id":172784943240,"handle":"misc-aviation-headset-parts","title":"Misc. Aviation Headset Parts","updated_at":"2026-02-09T22:09:46-05:00","body_html":"","published_at":"2020-03-04T16:24:31-05:00","sort_order":"best-selling","template_suffix":null,"disjunctive":true,"rules":[{"column":"type","relation":"equals","condition":"Misc. Aviation Headset Parts"}],"published_scope":"web"}]
David Clark Flat Lock Washer, 10/Pack – 43M-01 | 40688G-09
Genuine David Clark flat lock washers, designed for secure headset assembly. Includes 10 washers per pack, part number 43M-01 / 40688G-09.
OEM-Approved Hardware: Manufactured by David Clark for precise compatibility and performance.
Secure Fastening Solution: Helps maintain headset assembly integrity under vibration and frequent use.
Flat Lock Design: Provides even load distribution and enhanced locking strength.
High-Quality Material: Corrosion-resistant and built to withstand demanding aviation environments.
Multipack Value: Includes 10 washers—ideal for repairs, replacements, and stocking up.
Universal Fit for DC Headsets: Trusted replacement part for various David Clark models.
The David Clark Flat Lock Washer 10-Pack (Part Number 43M-01 / 40688G-09) is a genuine OEM component built to support secure headset construction and maintenance. These flat lock washers are precision-manufactured for consistent performance and long-lasting durability, making them essential for aviation headset upkeep.
Engineered for vibration resistance and firm fastening, each washer in this 10-pack ensures a tight, reliable fit in David Clark headset assemblies. Whether you're replacing worn components or stocking up on essential spares, these corrosion-resistant washers offer dependable quality backed by David Clark's trusted engineering. Perfect for aviation professionals, technicians, and headset owners who prioritize performance and reliability.
Technical Specifications
Part Numbers: 43M-01 / 40688G-09
Quantity: 10 washers per pack
Design: Flat lock
Material: Corrosion-resistant metal
Compatibility: Suitable for multiple David Clark headset models
Best priced around great and speedy service!
Also is the better of the 2 options since it is rated at 5,000 psi, not that I go to that high of pressure but I like the safety and security knowing that my chances of it blowing up in my face are a whole lot better and I can also purchase replacement seals for them at the same shop!!!
I bought the DC PTT because I know and trust the DC quality/durability to hold up to using every day. And so far it’s the best PTT I’ve used. I have a couple other no-name PTTs and the cable sheathing is crumbling and falling off. The DC PTT has worked even in sub zero cabin temp conditions when I didn’t have a functioning heater. I bought two to have a spare but the first one has been working great for 300hrs so far.
