Can you quote the Assy fasteners 88-50-16-00007-00? see pic.

Yes, we recognize the Turnlock , this model is use for soft panel such plastic cover.
We have in stock the following Turnlock corresponding to the dimension of your image.
See below our Turnlock HHSTLHS-2ZP
We have stock of the part HHSTLHS-2ZP.
See below other Turnlocks with the extra washer.
| HHSTLHS-1ZP |
| HHSTLHS-2ZP |
| HHSTLHS-3ZP |
| HHSTLHS-4ZP |
| HHSTLHS-5ZP |
| HHSTLHS-6ZP |
| HHSTLHS-7ZP |
| HHSTLHS-8ZP |
| HHSTLHS-9ZP |
| HHSTLHS-10ZP |
| HHSTLHS-11ZP |
| HHSTLHS-12ZP |
| HHSTLHS-13ZP |
| HHSTLHS-14ZP |
| HHSTLHS-15ZP |
| HHSTLHS-16ZP |
| HHSTLHS-17ZP |
| HHSTLHS-18ZP |
| HHSTLHS-19ZP |
| HHSTLHS-20ZP |
| HHSTLHS-21ZP |
| HHSTLHS-22ZP |
| HHSTLHS-23ZP |
| HHSTLHS-24ZP |
| HHSTLHS-25ZP |
| HHSTLHS-26ZP |
| HHSTLHS-27ZP |
| HHSTLHS-28ZP |
| HHSTLHS-29ZP |
| HHSTLHS-30ZP |
| HHSTLHS-31ZP |
| HHSTLHS-32ZP |
| HHSTLHS-33ZP |
| HHSTLHS-34ZP |
| HHSTLHS-35ZP |
| HHSTLHS-36ZP |
| HHSTLHS-37ZP |
| HHSTLHS-38ZP |
| HHSTLHS-39ZP |
| HHSTLHS-40ZP |