As listed
| Field | Value |
|---|---|
| Seller | Yardstore |
| Seller's item # | 17177 |
| Size | #11 (0.1910") |
| Length | 1 1/4" (Yardstore's "short") |
| Material | NAS 965 cobalt steel |
| Point | 135° split |
| Shank | 1/4"-28 threaded |
| Made in | USA |
| Volume price | Reduced unit price from 50 |
| 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
Yardstore's decimal for this size, 0.1910", is the one on our drill chart, where #11 is the drill for a 3/16" rivet.
The 1/4"-28 thread fits the Sioux 90° drill listed here.
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 — #11 x 1 1/4" Cobalt 1/4" x 28 Threaded Shank Bit — product listing, item 17177, checked 2026-09-29.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.