As listed
| Field | Value |
|---|---|
| Seller | Yardstore |
| Seller's item # | 10096 |
| Pilots | #40 (12995), #30 (12996), #21 (12997), #10 (12998), 1/4" (12999) |
| Angle | 100° |
| Material | Cobalt |
| Flutes | 3 |
| Thread | 1/4"-28 |
| Body | 1/2" |
| Listing checked | 2026-09-29 |
Taken from Yardstore's product page on 2026-09-29. Where the listing does not state a figure, this table does not either.
What it is for
Cobalt cutters, where the 9-piece kit does not state the material. They thread into a cage such as the Wescon 596-S.
As with the kit, the #10 pilot matches the 3/16" cleco hole on our drill chart, not the #11 rivet hole.
Where to buy
The link opens Yardstore's own page for this item, so the price and stock you see are theirs and current. We do not copy prices.
The Aviation Point links to third-party manufacturer and distributor websites. We may earn a commission on purchases made through these links, at no additional cost to you. The Aviation Point has no partnership or affiliate agreement with Yardstore, and these links carry no tracking parameters.
Sources
- Yardstore — Cobalt Countersink 5 Piece Set — product listing, item 10096, checked 2026-09-29.