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Single steel break-off screw approximately two inches long with polished brass finish

American Lock

American Lock AMLBS1 Break-Off Screw 2" Steel 1-Pack

SKU CH-F508-36ZB9 MPN AMLBS1

Break-off screw for rim cylinder locks, approximately two inches long with a steel finish, sold individually

  • Surface finishPolished Brass
  • Break-off design allows custom length for any rim cylinder
  • Approximately 2-inch steel shaft fits most standard lock sets
  • Single-screw pack lets you buy exactly what you need
  • Polished brass finish resists corrosion on exterior doors
  • Compatible with American Lock and most other rim cylinders

Break-Off Screw for Rim Cylinders

The American Lock AMLBS1 is a single break-off screw designed to secure most rim cylinder lock sets. It provides a replaceable fastening option for installers and maintenance staff working on commercial or residential entry hardware.

Steel Finish and Two-Inch Length

The screw features a steel finish and measures approximately two inches long. Its break-off design allows the installer to snap the shaft to the required depth without additional cutting tools.

Sustained Installation Use

Under repeated installation and removal cycles the steel construction resists stripping and maintains thread integrity. The break-off groove remains consistent so each snap delivers a clean separation without deforming the remaining shank.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $2.99
Cheaper than about 98% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameAmerican Lock
Model nameAMLBS1
Size & build
Surface finishPolished Brass

Questions about this item

How do I install the break-off screw and which step causes problems?

Thread the 2-inch steel screw into the rim cylinder until the lock body sits flush, then snap off the excess at the scored break point; the common mistake is tightening past the break line, which strips the threads before the tail can be removed.

What part will need replacement after extended service?

The single steel screw itself; if the head shears off during a future re-key or the threads corrode, you simply buy another AMLBS1 pack and swap it in.

What limits the screw’s holding power under constant door cycling?

The shear strength of the mild-steel shank at the break groove; repeated slamming can fatigue the notch, causing the tail to snap prematurely and the cylinder to loosen.

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