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Estimated doorstep delivery by 21 Nov - 23 Nov from USA
Dependable Lock Nuts at Competitive Price
Hillman 5/16"-18 zinc-plated nylon insert lock nuts are engineered to provide secure fastening in diverse mechanical and construction settings. The nylon insert grips bolt threads, resisting vibration and loosening, ensuring consistent clamping force. Made from durable alloy steel with a zinc coating, these lock nuts offer moderate rust resistance, suitable for indoor and light outdoor environments. Widely used in equipment assembly, automotive repairs, and structural projects, they deliver dependable performance. The 100-pack is ideal for contractors, mechanics, and DIY enthusiasts working on machinery, automotive, or hardware projects, ensuring reliable, vibration-resistant connections.
Manufactured from alloy steel with a zinc finish, these lock nuts resist corrosion and provide long-lasting performance. The nylon insert enhances locking strength, reducing the risk of back-off over time. Compatible with 5/16"-18 coarse thread bolts and threaded rods, they ensure proper thread engagement and dependable fastening. The zinc coating offers moderate protection against rust, making them suitable for indoor and light exterior use. Packaged in a convenient 100-piece C-Pak, they are perfect for bulk projects, repairs, and maintenance tasks, delivering consistent quality and performance.
In India, these lock nuts are ideal for construction, automotive, and hardware projects requiring vibration resistance. The zinc coating ensures moderate rust protection in humid environments. Delivered in 11-13 days, with duties included, they provide a reliable, cost-effective fastening solution for professionals and DIYers alike, matching the quality of US-made hardware.
Reliable Locking Performance
Hillman nylon insert lock nuts use an integrated nylon insert that creates friction against bolt threads, resisting vibration and loosening. This design ensures dependable fastening in demanding environments, backed by Hillman's reputation for consistent quality and performance in hardware solutions.
Ideal for Construction & Automotive Use
These lock nuts are suitable for equipment assembly, automotive repairs, structural installations, and maintenance projects. They are engineered to withstand vibration and mechanical stress, making them a dependable choice for professionals and DIY enthusiasts in India. Skip if you need high corrosion resistance for prolonged outdoor exposure—consider stainless steel alternatives.
Typical situations where Hillman Lock Nuts helps — illustrative scenarios, not customer reviews.
A mechanic in Mumbai working on vehicle assembly needs vibration-resistant nuts that last in humid conditions.
Hillman lock nuts resist vibration and corrosion, ensuring secure fit over multiple uses. One pack lasts for several repair jobs, saving costs.
| Material | Alloy Steel |
| Finish | Zinc Coating |
| Corrosion Resistance | Moderate |
| Thread Type | Coarse |
| Thread Size | 5/16"-18 |
| Compatibility | Bolts and threaded rods |
| Reapplication | Not required |
| Shelf Life | Unopened, indefinite |
| Cost per use | ₹27.90 per piece |
| Feature | Hillman Lock Nuts, | Others |
|---|---|---|
| Material & Finish | Alloy Steel with Zinc coating for moderate rust resistance | Commonly zinc or galvanized steel, variable quality |
| Thread Compatibility | 5/16"-18 coarse thread, dependable engagement | Varies; confirm thread size for proper fit |
| Corrosion Resistance | Moderate, suitable for indoor/light outdoor use | Often lower, may rust faster in humid environments |
| Price & Pack Size | ₹2,790 for 100 pcs | ₹300-₹500 for smaller packs, variable quality |
| SKU | yjf8633 |
| GTIN | 00008236072884 |
| Brand | Hillman |
| Size | 5/16"-18 |
| Material | Alloy Steel |
| Finish | Zinc |
| Item Shape | Hexagonal |
About Hillman
Hillman has been a trusted name in fasteners for over a century, known for quality and dependable hardware solutions worldwide.
Compliance & Legal
This is a mechanical fastener; no medical or safety certifications required.
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This item:
Hillman Lock Nuts, 5/16-18, 100 Pack | Vibration-Resistant Zinc Locknuts
2,790
This item
Hillman Lock Nuts, 5/16-18, 100 Pack | Vibration-Resistant Zinc Locknuts
2,790
Total price:
7,100
You save 2,620 (27%) Extra3 items selected
3 items
7,100You save 2,620 (27%) Extra
| Attributes |  |  |  |  |  | ||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 2,790 3,750 | 1,490 2,000 | 2,820 3,970 | 1,260 1,660 | 3,420 4,980 | 2,040 2,820 | 4,040 5,980 |
| Brand Name | Hillman | binifiMux | binifiMux | Hard-to-Find Fastener | Hard-to-Find Fastener | Command | Glue Dots |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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