BEST 41B772 Brass Padlock, 3/8" Shackle Diameter, 7-Pin Housing, 2" Steel Shackle - SFIC Less Core

The BEST 41B772 is a solid brass body padlock from BEST's B series, configured with a 3/8-inch shackle diameter, a 2-inch steel shackle, and a 7-pin SFIC housing sold less core. If you've been searching "brass padlock", "small shackle padlock", or "shackle protected padlock" this is the commercial grade version. The body is machined from solid extruded brass, not cast zinc or pot metal. The shackle locks at both heel and toe. And the lock accepts BEST Small Format Interchangeable Cores, so it integrates directly into an existing BEST key system without re-keying anything.

Understanding the 41B772 Model Number

The model code tells you exactly what you're getting. The 41B prefix identifies the case size and material 3/8-inch shackle diameter, brass body. The 7 indicates the 7-pin SFIC housing configuration. The 72 suffix is the shackle length designation 2-inch steel shackle. Other shackle lengths in the same 41B7 series include the 41B72 (3/4-inch shackle), the 41B722 (1-1/2-inch shackle), and the 41B782 (4-inch shackle). They all share the same 3/8-inch shackle diameter and SFIC housing the only difference is clearance. If you need a shorter shackle for close-tolerance applications or a longer one for chain or hasp work, those are the sibling models.

SFIC Less Core: What It Means for Your Key System

This padlock ships without a core installed. The "less core" designation tells you the lock is ready for your own BEST SFIC cores to be inserted. SFIC stands for Small Format Interchangeable Core BEST's system where the same removable core type works across cylinders, locks, and padlocks throughout the product line. A control key removes the old core, your keyed core drops in, and the lock is immediately active on your existing master key program. No pinning, no re-keying, no locksmith involvement.

The 7-pin housing accepts 7-pin SFIC cores. If your facility runs 6-pin SFIC cores, this isn't the right housing confirm your core pin count before ordering.

Heel and Toe Locking: The Shackle Protection Feature

The shackle on the 41B772 locks at both the heel (hinge side) and toe (open end) when closed. Single-locking padlocks only secure one end of the shackle. On a dual-locking padlock like this one, forcing one end of the shackle open doesn't release the lock both locking points have to be defeated simultaneously. That's why "shackle protected padlock" searches land on this product. The dual-lock configuration makes bolt cutter and pry attacks significantly harder than a single-point shackle design.

ASTM F883 Compliance

The 41B series meets ASTM F883 Grade 3 performance with the standard steel shackle. The XSPL shackle option upgrades to Grade 4. Grade 6 corrosion resistance is available as an option (designated E in the ordering code). These aren't marketing grades they're tested performance categories covering shackle cutting force, deadbolt impact resistance, and corrosion resistance.

Specifications

Model: BEST 41B772

Series: B Series Padlock (41B series)

Body: Machined solid extruded brass, one-piece construction

Shackle Diameter: 3/8" steel

Shackle Length: 2" (measured from top of case to inside of shackle when locked)

Shackle Locking: Heel and toe (dual locking point)

Core Housing: 7-pin SFIC

Core: Less core SFIC core not included, sold separately

Key Retaining: Non-key retaining standard

ASTM F883: Grade 3 (steel shackle), Grade 4 (XSPL shackle option)

Corrosion Resistance: Grade 6 with option E

Compatible Cores: BEST 7-pin SFIC

Body Finish: Brass

American Locksets has stocked BEST B Series padlocks since 2001.