Heavy Hex Nut
Heavy hex nuts are manufactured either from hex bright bars or hex black bars or by machining from round bars. Internal threads of the heavy hex nuts are made by either tapping or internal thread machining. Threading confirms to ASME B1.1 Class 2B for UN & UNC threads.
Sizes:-
| 5/8” x 11 UNC | 3/4” x 10 UNC | 7/8” x 9 UNC | 1” x 8 UNC |
| 1-1/8” x 8 UN | 1-1/4” x 8 UN | 1-3/8” x 8 UN | 1-1/2” x 8 UN |
| 1-5/8” x 8 UN | 1-3/4” x 8 UN | 1-7/8” x 8 UN | 2” x 8 UN |
| 2-1/4” x 8 UN | 2-1/2” x 8 UN | 2-3/4” x 8 UN | 3” x 8 UN |
Material Grades
- ASTM A193 Gr B7 & ASTM A194 Gr 2H
- ASTM A193 Gr B7M & ASTM A194 Gr 2HM
- ASTM A320 Gr L7 & ASTM A194 Gr 7
- ASTM A320 Gr L7M & ASTM A194 Gr 7M
Coating:
- Black finish, Xylan coating, PTFE coating, or as required.
Marking & Traceability:
- Marking as per ASTM requirements.
- Marking & traceability as per API 20E & API 20F for each lot.
Documentation, Traceability & Quality control records:
- Raw material Mill TC
- UT report
- MPI report (if applicable)
- Heat treatment details with graph
- Mechanical & Chemical test report
- Pre dispatch inspection report