MIDWEST FASTENER CORP
MIDWEST FASTENER CORP 71928 Pushnut Washers 5/16" 30PK
Pack of 30 pushnut washers with inward-facing flanges that grip without threads for quick, permanent fastening
- TypeNuts
- Zinc-plated steel resists corrosion for longer service life
- Inward-facing flanges grip shafts without threads or tools
- Push-on installation saves time on assembly lines
- 30-piece pack covers multiple repair or production jobs
- Cut-to-remove design prevents accidental loosening under vibration
Product Identity
The MIDWEST FASTENER 71928 pushnut washers come in a pack of 30 pieces. They suit mechanics and DIY users who need fast, permanent retention on 5/16 inch studs without threading.
Installation Characteristics
The zinc-plated steel body resists corrosion during normal use. Flanges act as inward-facing teeth that grip the stud when pushed or lightly tapped into place. No tools are required for fitting.
Upgrade Context
These washers replace threaded nuts where speed of assembly matters and disassembly is not planned. The jump is worth it when a permanent, vibration-resistant hold is needed and cutting for removal is acceptable.
Highlights
- Zinc-plated steel resists corrosion for longer service life
- Inward-facing flanges grip shafts without threads or tools
- Push-on installation saves time on assembly lines
- 30-piece pack covers multiple repair or production jobs
- Cut-to-remove design prevents accidental loosening under vibration
Specifications
| Brand | MIDWEST FASTENER |
|---|---|
| Type | Nuts |
Questions about this item
How do I install these 5/16" pushnut washers on a shaft without damaging them?
Align the washer over the shaft and press or tap it straight on until the inward-facing flanges grip; do not twist, because the teeth only engage with direct axial force.
What maintenance or replacement will the zinc-plated steel washers need over time?
The zinc plating resists corrosion, but if the coating is scratched or the joint sees frequent vibration, inspect for rust or loosening and replace any washer that no longer grips the shaft securely.
What is the first limit reached when these pushnuts are under sustained vibration or axial load?
The inward-facing flanges can gradually deform or wear, reducing their bite on the shaft until the washer backs off or spins freely.
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