MRO Field Guide

M6 Screw Lot vs UH40055 Deadbolt: Which Industrial Hardware Buy Should You Choose?

Two very different industrial hardware products, one clear decision. We compare the M6 machine screw lot and the UH40055 deadbolt on purpose and project fit.

Last updated Aug 17, 2026

When you're shopping for industrial hardware, two very different needs can end up on the same list: replacing worn fasteners on a restoration project and securing a door that sees daily traffic. The M6 x 65mm Round Head Machine Screws Bolt Lot and the Commercial Single Cylinder Deadbolt Universal Hardware Industrial Duty UH40055 sit at opposite ends of that spectrum. One costs $9.99, the other $19.95, and the $9.96 spread reflects how different these products are. The right choice isn't about quality-it's about what actually needs fixing.

Quick Verdict

If your immediate task is a repair or restoration requiring machine screws, the M6 lot is the straightforward winner. If your priority is entry-door security, the UH40055 deadbolt is the one to buy. There's no overlap in function, so pick the one that matches the job sitting in front of you.

Comparison

ProductListed PricePrice BarBest Fit
M6 x 65mm Round Head Machine Screws Bolt LotUSD 9.99Restoration and repair fasteners
Commercial Single Cylinder Deadbolt Universal Hardware UH40055USD 19.95Commercial or residential door security

These two products share the same general industrial hardware shelf, but they solve separate problems. That's why the comparison is about purpose first.

Where Each Product Wins

The M6 screw lot wins for:

  • Restoration and equipment repair jobs where an aged, character-filled finish is part of the appeal.
  • Projects that need several same-size fasteners in one purchase.
  • Shop tasks that call for a simple, traditional head style.

The UH40055 deadbolt wins for:

  • Securing a business or residential entry door.
  • Replacements that use a similar deadbolt layout.
  • Choosing a lock with a square corner strike and a 2-3/4" backset.

Product Notes

M6 x 65mm Round Head Machine Screws Bolt Lot - 2-5/8" Long Industrial Fasteners

M6 x 65mm Round Head Machine Screws Bolt Lot - 2-5/8" Long Industrial Fasteners

This lot contains 20 machine screws with an M6-1.0 metric thread and a 2-5/8" length. The round heads use a slotted drive, and the authentic weathered patina gives restoration work the right visual character. Because they're made from stainless steel, they're a reasonable choice for workshop and repair settings. The main drawback is condition: this is a used, salvaged lot, so the screws don't have a fresh factory finish. The fixed size is another thing to keep in mind-if your project needs a different thread or length, these won't adjust. For a specific restoration task where a batch of vintage-style fasteners is the goal, this lot covers it well.

Commercial Single Cylinder Deadbolt Universal Hardware Industrial Duty UH40055

Commercial Single Cylinder Deadbolt Universal Hardware Industrial Duty UH40055

This deadbolt is new open box and comes with two keys and a square corner strike. It's designed for industrial duty, and the ANSI Grade 1 security level makes it a strong candidate for an entry door. The 2-3/4" backset is clearly specified, so you can match it to the door hardware you already have. The limitation is keyed access on one side, which works well when an interior thumb turn is acceptable but not for setups that need keyless entry from both sides. If your project is about securing a door rather than fastening parts, this deadbolt gives you the security hardware you need.

Final Choice by Use Case

For a restoration or repair bench, the M6 x 65mm Round Head Machine Screws Bolt Lot is the pick. For a door that needs dependable security, the Commercial Single Cylinder Deadbolt UH40055 is the choice. Let the task decide: fastening work points you to the screw lot, locking work points you to the deadbolt.

Products in this article
M6 x 65mm Round Head Machine Screws Bolt LotUSD 9.99View on eBayCommercial Single Cylinder Deadbolt Universal Hardware Industrial Duty UH40055USD 19.95View on eBay
M6 x 65mm Round Head Machine Screws Bolt LotUSD 9.99View on eBayCommercial Single Cylinder Deadbolt Universal Hardware Industrial Duty UH40055USD 19.95View on eBay

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