Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands
FAQ Shipping & Returns Order Lookup Contact Account
Hillman 5/16 in. Zinc-Plated Steel SAE Nylon Lock Nut 100 pk

Hillman 5/16 in. Zinc-Plated Steel SAE Nylon Lock Nut 100 pk

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Discover the Hillman 5/16 in. Zinc-Plated Steel SAE Nylon Lock Nut 100 pk, designed for durability and reliability in all your fastening projects.
Hillman MPN 180180 In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $11.99. Our online price is $13.49.
$13.49
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within — for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Experience unparalleled reliability with the Hillman 5/16 in. Zinc-Plated Steel SAE Nylon Lock Nut 100 pk. Designed for both durability and performance, these lock nuts are essential for any DIY project or professional application. Constructed from high-quality steel and coated with a protective zinc plating, they resist corrosion and maintain their strength even in challenging environments.

Key Features:

  • Zinc-Plated Finish: Offers superior rust resistance, ensuring longevity.
  • Durable Steel Construction: Engineered for high-stress applications, providing reliable performance.
  • Nylon Lock Design: Prevents loosening from vibrations, keeping your assemblies secure.
  • 100 Piece Pack: Ample quantity for multiple projects, making it economical and convenient.
  • Fine Thread Type: Ensures a snug fit that enhances stability and strength.

Whether you're fastening machinery components or working on home repairs, the Hillman 5/16 in. Zinc-Plated Steel SAE Nylon Lock Nut is your go-to choice. Its superb locking mechanism minimizes the risk of disassembly over time, making it perfect for automotive, construction, and household applications.

Don’t settle for less when it comes to securing your projects. Order your pack today and ensure peace of mind with every turn of the wrench!

The Details Specifications

Brand Hillman
SKU 78990
UPC 008236073010
Unit 0
Case Pack Quantity 9 per case
Retail Unit Quantity 1
Unit of Measure 100 BX
Dimensions (L × W × H) 3 × 3 × 2
Weight 1 lbs
Cubic Feet 0.02258 ft³
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

Find a local store →
Mon–Fri 6–5 PST
Independent hardware retailer? Join the network →
About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare