MIDWEST FASTENER CORP
MIDWEST FASTENER CORP 08209 Nylon Insert Lock Nut 1/2"-13 Steel Grade 8 Yellow
Resists loosening under vibration with a nylon insert, 1/2"-13 thread, Grade 8 steel, yellow finish
- TypeNuts
- Resists vibration loosening with nylon insert
- Grade 8 steel handles high-stress loads
- Yellow finish adds corrosion protection
- 1/2"-13 thread fits standard coarse bolts
- Manufacturer part 8209 for easy identification
MIDWEST FASTENER 08209 Lock Nut
This MIDWEST FASTENER 08209 lock nut provides a 1/2"-13 thread size in steel with a yellow finish. The nylon insert resists loosening caused by vibration and torque. It meets Grade 8 specifications for high-strength fastening requirements. Suitable for automotive, industrial and general mechanical assemblies.
Nylon insert resists vibration loosening
Under sustained load the nylon insert maintains clamping force by creating frictional resistance against the bolt threads. This prevailing torque feature prevents the nut from backing off during continuous vibration cycles. The Grade 8 steel construction supports heavy-duty structural and equipment applications.
Verify thread pitch and material compatibility
Confirm the mating bolt uses a 1/2"-13 thread before ordering. Ensure the steel grade and yellow coating suit the operating environment and any galvanic corrosion concerns. Check that the prevailing torque value matches the design specification for the joint.
Highlights
- Resists vibration loosening with nylon insert
- Grade 8 steel handles high-stress loads
- Yellow finish adds corrosion protection
- 1/2"-13 thread fits standard coarse bolts
- Manufacturer part 8209 for easy identification
Specifications
| Brand | MIDWEST FASTENER |
|---|---|
| Type | Nuts |
Questions about this item
Will the nylon insert degrade from engine heat after continuous daily driving?
The nylon insert is designed to resist loosening under vibration and torque in typical automotive conditions.
Does the 1/2"-13 thread require a Grade 8 bolt or will a Grade 5 bolt work?
A Grade 5 bolt will thread correctly; the nut's Grade 8 rating means it meets higher proof-load requirements.
Can I mix these yellow zinc nuts with older plain-steel lock nuts on the same assembly?
Yes, the 1/2"-13 thread pitch matches, though the yellow zinc finish provides different corrosion resistance than plain steel.
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