Item # GR2FJN7/8-9HDG
7/8" - 9 FINISHED HEX JAM NUT A563 GRADE A COARSE HDG
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Item # GR2FJN7/8-9HDG
7/8" - 9 FINISHED HEX JAM NUT A563 GRADE A COARSE HDG
- UM: EA
The 7/8-9 A563 DH hex jam nut is a unc-thread hex jam nut in a hot-dip galvanized finish stocked at Eugene Fastener & Supply. Part of our full hex jam nuts selection.
At a glance
| Wrench size (across flats) | 1-5/16" |
| Thread | 7/8-9 UNC (Coarse) |
| Grade | A563 DH |
| Material | Steel |
| Finish | Hot-Dip Galvanized |
Good to know
- Use with A563 DH bolts/studs — match or exceed the bolt grade so the nut is never the weak link.
- Coarse (UNC) thread — faster to install and more tolerant of nicks and corrosion.
- A thin nut — used to lock a primary nut (double-nut method) or set and hold a position on threaded rod.
- Hot-dip galvanized for outdoor and structural service.
Other sizes in this series — A563 DH Hex Jam Nuts
| Size | Part # | Wrench |
|---|---|---|
| 7/8-9 (HDG) (this page) | GR2FJN7/8-9HDG | 1-5/16" |
| 1-8 (ZP) | GR2HJN1-8ZP | 1-1/2" |
Need a different material, finish, or thread, or bulk pricing? Contact our sales team, or view all hex jam nuts. Eugene Fastener & Supply, since 1969.
Specifications
| Diameter | 7/8 |
| Thread pitch | 9 |
| Material | Steel |
| Finish | Hot-Dip Galvanized |
| Grade | UNC (Coarse) |
| Thread | Hex Jam Nuts |
| ASME B18.2.2 | |
| A563 DH |
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