MIDWEST FASTENER CORP
MIDWEST FASTENER CORP 60904 7/16"-20 Zinc Plated Steel Fine Thread Castle Hex Nuts hardware
Zinc-plated steel castle nuts with 7/16"-20 fine threads secure bolts using cotter pins or safety wire
- TypeNuts
- Fine-thread pitch ensures precise adjustment
- 7/16"-20 UNF sizing matches specific fastener requirements
- Zinc-plated steel resists corrosion in harsh environments
- Castle slots accept cotter pins for vibration-proof locking
- Manufacturer part 60904 guarantees correct specification match
7/16"-20 Fine Thread Castle Nuts
These zinc-plated steel castle nuts feature a 7/16"-20 fine thread pitch for precise adjustment on bolts or axles with drilled holes. The slotted design allows alignment with a cross-hole so a cotter pin or safety wire can lock the fastener in place. They suit automotive, agricultural and general machinery assemblies where vibration-resistant locking is required. The 60904 part number identifies this specific hardware configuration.
Zinc Plated Steel Construction
The steel body provides structural strength while the zinc plating adds a layer of corrosion resistance for exposed environments. Each nut incorporates a hexagonal base for standard wrench engagement and a slotted crown that accepts a cotter pin or safety wire. This two-piece locking method prevents loosening without damaging threads, allowing disassembly and reuse when maintenance is needed. The fine thread profile offers finer clamping control than coarse alternatives.
Verify Thread And Hole Compatibility
Confirm the mating bolt or axle uses a 7/16"-20 thread and includes a drilled cross-hole at the correct position for the castle slots. Ensure the application calls for a castle nut rather than a prevailing-torque or nylon-insert lock nut, as the locking mechanisms differ. Check that a cotter pin or safety wire of appropriate diameter is available for the slot width. Buyers needing a different thread pitch, diameter or locking style should select an alternative fastener.
Highlights
- Fine-thread pitch ensures precise adjustment
- 7/16"-20 UNF sizing matches specific fastener requirements
- Zinc-plated steel resists corrosion in harsh environments
- Castle slots accept cotter pins for vibration-proof locking
- Manufacturer part 60904 guarantees correct specification match
Specifications
| Brand | MIDWEST FASTENER |
|---|---|
| Type | Nuts |
Questions about this item
What thread standard does the 7/16"-20 castle nut use?
It uses a 7/16"-20 fine thread pattern, which provides a tighter fit per unit of rotation compared to coarse threads.
What hardware is required to lock the 60904 castle nut in place?
A cotter pin or safety wire must pass through the drilled hole in the bolt or axle and align with the nut's castellation slots.
How do you secure the zinc-plated castle nut after torquing?
After torquing, rotate the nut forward to the nearest slot that aligns with the bolt hole, then insert a cotter pin or safety wire through both to lock it.
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