J-Mac Machining LLC offers a variety of manual machining services including but not limited to:
- Acme and V-threading services
- Thread recovery (including extraction of broken studs )
- Boring
- Facing
- Turning
- Flange serrations
- Part replication
- Drive bushing threading for valve stems
- RTJ flange machining
- Milling services including bolt hole pattern machining
- Machining seat rings for a variety of valves