[{"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 Lock Washer (100 Pack) – OEM Headset Hardware | 40688G-40
The David Clark Lock Washer (Part No. 40688G-40 / 00070M-03) is a genuine OEM hardware component designed to provide secure fastening and vibration resistance in David Clark aviation headsets. Each washer is precision-engineered to maintain tension and prevent loosening, ensuring long-lasting performance and reliability.
Authentic OEM David Clark hardware for aviation headset assembly.
Designed to maintain secure tension and resist vibration.
Ideal for headset repair, overhaul, and general maintenance work.
Pack of 100 lock washers – perfect for aviation service professionals.
Manufactured to meet David Clark’s exacting quality and durability standards.
The David Clark Lock Washer (40688G-40) offers dependable performance in environments where consistent fastening is critical. Commonly used in headset earcup and headband assemblies, this washer prevents component loosening caused by regular vibration and repeated use. Built from OEM-grade materials, these washers deliver superior corrosion resistance and fit precision. Whether you’re maintaining a single headset or servicing a fleet, this 100-pack provides the authentic hardware needed to ensure reliable headset operation and extended product lifespan.
Technical Specifications
Manufacturer: David Clark Company
Part Numbers: 40688G-40 / 00070M-03
Type: Lock Washer
Quantity: Pack of 100
Material: OEM-grade metal
Application: Headset assembly and maintenance
Compatibility: Select David Clark aviation headsets
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.
