NITRIDED
- Nitralloy 135M Steel, nitrided
- Used for little to no glass applications
TOOL STEEL SCREWS
- D-2 SCREWS
- Less wear resistant than 9V
- Less expensive than 9V
- Used for up to 15% glass filled material
- CPM-9V SCREWS
- Used for high glass applications, up to 30%
- Excellent wear resistance
- Not rebuildable
- High Carbon Steel
- Brittle material due to carbon content
| 4140HT HARDFACED SCREWS
- 4140HT Base Steel
- Hardfacing material welded on O.D.
- Colmonoy #56
- Stellite #6, #12
- Colmonoy #83
CARBIDE COATED SCREWS
- Best material for high wear applications
- Coated approximately .005” per side
- Tungsten carbide
- Material can be polished
- May give problems feeding on small screws
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