Inch series2 standards7 specification pages
1-8 Fasteners
Every 1-8 bolt and nut in the database. 1-8 has a nominal major diameter of 1 in, threaded 8 tpi to the UNC series, across 2 standards. Rivets are not on this page: they carry no thread, so they are indexed by shank diameter rather than by size designation.
Nominal Ø1 in
Threads per inch8 tpi
Pitch Ø0.9189 in
Tap drill0.875 in
1-8 thread dimensions
Full thread page- Designation
- 1-8 UNC
- Major diameter
- 1 in
- Threads per inch
- 8 tpi
- Pitch diameter
- 0.9189 in
- Minor diameter — external
- 0.8465 in
- Minor diameter — internal
- 0.8646 in
- Tap drill size
- Ø 0.875 in
1-8 Bolts
6 pages1-8 Nuts
1 pagesASME B18.2.2Hex Nut — Inch Series