MIDWEST FASTENER CORP
MIDWEST FASTENER CORP 50369 Lock Nut 3/4"-10 Steel Grade 8 Yellow Zinc 10 PK
Grade 8 steel lock nuts with yellow zinc finish resist loosening and corrosion in a pack of 10
- TypeNuts
- Grade 8 steel delivers high clamping strength for demanding assemblies
- Yellow zinc coating resists corrosion in harsh environments
- Lock-nut design resists vibration loosening on moving equipment
- 3/4"-10 thread fits standard heavy-duty bolts and studs
- Ten-piece pack supplies multiple joints from one box
3/4"-10 Grade 8 lock nuts – 10 pack
This pack contains ten 3/4"-10 steel lock nuts manufactured to Grade 8 strength with a yellow zinc finish. They are designed for heavy-duty fastening where vibration resistance and high clamping force are required. The integrated flange distributes load across the joint face, reducing surface damage and helping the nut stay tight on uneven surfaces. Suitable for automotive, industrial and structural assemblies.
For high-strength flanged fastening
These nuts suit mechanics and fabricators who need Grade 8 rated hardware with a built-in washer face for 3/4"-10 bolts or studs. They are not for applications that require a standard hex nut without a flange, left-hand threads, or a different strength class such as Grade 5 or metric sizes. Buyers needing stainless steel, nylon-insert locking, or larger pack quantities should look at other listings.
Check thread pitch and grade compatibility
Verify that the mating bolt or stud uses 3/4"-10 UNC threads and that Grade 8 strength matches the joint design. Confirm the yellow zinc coating is acceptable for the operating environment and that the flange diameter clears adjacent components. Ensure the 10-piece quantity meets the project requirement before ordering.
Highlights
- Grade 8 steel delivers high clamping strength for demanding assemblies
- Yellow zinc coating resists corrosion in harsh environments
- Lock-nut design resists vibration loosening on moving equipment
- 3/4"-10 thread fits standard heavy-duty bolts and studs
- Ten-piece pack supplies multiple joints from one box
Specifications
| Brand | MIDWEST FASTENER |
|---|---|
| Type | Nuts |
Questions about this item
What thread size and pitch must the bolt or stud have to fit these 3/4"-10 lock nuts?
The nuts have 3/4"-10 threads, so the mating bolt or stud must be 3/4" diameter with 10 threads per inch.
Will these Grade 8 steel lock nuts work on Grade 5 bolts I already have?
Yes, Grade 8 nuts are compatible with Grade 5 bolts; the nut strength exceeds the bolt, which is the normal and safe combination.
How can I confirm the lock nuts are properly tightened after installation?
Tighten each nut until the flange seats firmly against the joint and the prevailing-torque feature resists further turning without stripping the threads.
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