MIDWEST FASTENER CORP
MIDWEST FASTENER CORP 34133 Nylon Insert Lock Nut 5/16"-24 Steel Black Chrome 6
Nylon insert lock nut resists loosening under vibration and torque, 5/16"-24 steel with black chrome finish, pack of 6
- TypeNuts
- Nylon insert resists loosening under vibration
- 5/16"-24 thread fits matching bolts
- Steel construction provides structural strength
- Black chrome finish protects against corrosion
- Pack of six covers multiple fastening points
MIDWEST FASTENER 34133 Lock Nuts
These MIDWEST FASTENER 34133 nuts use a nylon insert to resist loosening under vibration and torque. The 5/16"-24 thread fits matching bolts or studs in automotive and general hardware assemblies. A black chrome finish provides corrosion resistance and a uniform appearance. The pack contains six pieces for small jobs or spares.
Mechanics and DIYers needing vibration-resistant
The nylon insert gives reliable prevailing torque without permanent thread damage, so the nuts can be removed and reused a few times. Builders who need a high-temperature locking method or a prevailing-torque nut rated for repeated reassembly should look at all-metal alternatives. Applications requiring a different thread pitch or diameter will need another part number.
Six-piece pack for light-duty use
Six nuts cover a single repair point or a small project with a few spares left over. The nylon insert works well at normal operating temperatures but loses grip above its melting point, so high-heat zones such as exhaust manifolds are outside its comfortable range. Larger jobs or preventive maintenance stocks will require multiple packs.
Highlights
- Nylon insert resists loosening under vibration
- 5/16"-24 thread fits matching bolts
- Steel construction provides structural strength
- Black chrome finish protects against corrosion
- Pack of six covers multiple fastening points
Specifications
| Brand | MIDWEST FASTENER |
|---|---|
| Type | Nuts |
Questions about this item
What thread size and pitch do I need on the bolt or stud for these 5/16"-24 lock nuts to fit?
You need a 5/16 inch diameter bolt with 24 threads per inch for these nuts to engage correctly.
Will these steel black-chrome nuts gall or corrode when paired with my existing Grade 5 or stainless fasteners?
The black-chrome finish on steel resists corrosion and reduces galling when used with common Grade 5 or stainless hardware.
How do I confirm the nylon insert is still gripping after I torque the nut onto the bolt?
Turn the nut by hand after installation; resistance from the nylon insert shows it is locking as intended.
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