Sargent 4101 Mailbox Lock Cyli...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$148.00
$91.92
Sargent 4101 Mailbox Lock Cylinder - 6-Pin ANSI/BHMA Grade 1 Certified

Sargent 4101 Mailbox Lock Cylinder - 6-Pin ANSI/BHMA Grade 1 Certified

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Model: SGT-4101 LA 15
From the Conventional Key System Collection
$148.00
$91.92
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$148.00
$91.92
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Sargent 6-Pin Mailbox Lock Cylinder with ANSI/BHMA Grade 1 Certification

Professional Mailbox Security Solution

The Sargent 6-Pin Mailbox Lock Cylinder delivers ANSI/BHMA A156.5 Grade 1 certified security for commercial mailbox applications. This advanced 6-pin cylinder system comes standard with 1-bitted configuration and includes two nickel silver keys for reliable mail security. Engineered to meet US Postal Service regulations with professional-grade construction for demanding commercial environments.

Professional Features & Benefits

  • ANSI/BHMA Grade 1 Certification: A156.5 Grade 1 certified construction ensures maximum security and durability for commercial mailbox applications.
  • 6-Pin Security System: Advanced 6-pin cylinder design provides superior pick resistance and key control for enhanced mail security.
  • Standard Key Configuration: Supplied 1-bitted unless otherwise specified, with KD- option available for cylinders keyed differently or random configurations.
  • Complete Key Set: Each cylinder includes two nickel silver keys for immediate installation and backup access.
  • Master Key Compatibility: Supports master key systems when keying details are provided on SARGENT Keyed Order Lead Sheets with US Postal regulation compliance.
  • Multiple Finish Options: Available in finishes 4 and 15 to match various mailbox installations and aesthetic requirements.
  • Postal Regulation Compliance: Designed to meet US Postal Service requirements for mailbox security applications.
  • Professional Construction: Nickel silver keys and Grade 1 materials provide exceptional durability for commercial mail security applications.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Consult mailbox manufacturer documentation to verify cylinder compatibility with specific mailbox model and determine proper installation requirements.
  2. Confirm mailbox preparation matches cylinder specifications including bore diameter and depth requirements.
  3. Insert cylinder into mailbox lock housing ensuring proper alignment and full engagement with locking mechanism.
  4. Secure cylinder using manufacturer-specified retention method and verify smooth key operation throughout full rotation.
  5. Test lock operation with both provided keys to ensure proper engagement and disengagement of locking mechanism.
  6. Document key numbers and retain keying information for future reference. Refer to manufacturer documentation for complete installation specifications and troubleshooting.

Professional Applications

  • Commercial Office Building Mail Centers
  • Multi-Tenant Residential Properties
  • Educational Institution Mail Systems
  • Healthcare Facility Mail Distribution
  • Government and Municipal Buildings
  • Retail and Business Mail Security
  • Industrial Facility Mail Operations

Why Choose Sargent Quality?

Sargent 6-Pin Mailbox Lock Cylinders deliver professional-grade security with ANSI/BHMA A156.5 Grade 1 certification and advanced 6-pin construction for maximum protection. Each cylinder includes two nickel silver keys and meets US Postal Service regulations for reliable mail security. Engineered for demanding commercial applications where dependable mailbox security is essential.

Product Specs

Series:
4101 Series
Product Type:
Cylinders
Product Group:
Mechanical Locks
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Commercial/Residential:
Commercial
Collection:
Conventional Key System
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Category:
Mechanical Locks
Department:
Door Hardware

Sargent SGT-4101 LA 15 – Frequently Asked Questions

1) Will a Sargent 4101 mailbox cylinder work in my apartment building's mailbox doors?
The Sargent 4101 is a replacement cylinder for commercial mailbox locks, and it is built to meet US Postal Service requirements for mailbox security. It is the cylinder only, not the whole lock housing, so the mailbox lock body has to accept it. Check the bore diameter and depth of the existing mailbox prep against the cylinder before ordering a batch for a whole bank of boxes.
2) What keyway do I get with the Sargent 4101 mailbox cylinder, and can I match the rest of my Sargent hardware?
Nine Sargent keyways are offered on the 4101: LA (the standard), LB, LC, LE, LF, LG, LJ, LK and LL. If the building already runs Sargent conventional cylinders, order the 4101 in the same keyway family and the mail room stays on the same key system as the rest of the doors.
3) If I order Sargent 4101 mailbox cylinders without specifying keying, what do I actually receive?
Ordered as standard keying, 4101 cylinders ship 1-bitted, meaning every cylinder in the order operates on the same single bitting. That is fine if you intend to have a locksmith key them on site, and wrong if you need each tenant box to have its own key. Choose KD (keyed different) for individual tenant keys or KA (keyed alike) for a group that shares one key.
4) Can Sargent 4101 mailbox cylinders be put on a master key system?
Master keying is supported. Keying details have to be submitted on SARGENT Keyed Order Lead Sheets, and the system still has to conform to US Postal regulations for mailbox applications, which is what limits how a mail bank can be mastered. Property managers running one master for a whole building typically pair a KD tenant key with a master for the carrier or management access.
5) Is the Sargent 4101 mailbox cylinder certified to any security grade?
ANSI/BHMA A156.5 Grade 1, the top grade in that cylinder standard. For a specifier writing a mail room into a government, healthcare or school project where the drawing calls out Grade 1 auxiliary locks and cylinders, that is the line item this satisfies.
6) Is this a complete mailbox lock or just the cylinder?
Cylinder only. The 4101 is a replacement part that drops into an existing mailbox lock housing and engages the existing locking mechanism. If the housing itself is damaged or the cam does not match, you need a complete mailbox lock rather than this cylinder.
7) How many pins does the Sargent 4101 mailbox cylinder have, and does that matter for key control?
Six pins. A 6-pin conventional cylinder gives more bitting combinations than a 5-pin, which is what lets a large mail bank be keyed different without repeats and gives better pick resistance than the stamped wafer cylinders many mailbox doors ship with from the factory.
8) What finishes does the Sargent 4101 mailbox cylinder come in?
Two: 04 satin brass clear coated, and 15 satin nickel plated clear coated. Both are available in every one of the nine keyways, so matching an existing bank of brass boxes or a newer nickel installation does not restrict your keyway choice.
9) Do Sargent 4101 mailbox cylinders come with keys?
Two nickel silver keys ship with each cylinder. Nickel silver is the standard key blank material for commercial cylinders because it wears better in a lock that gets daily use than brass. For a tenant handover, that gives you one key out and one on file.
10) Is the Sargent 4101 rated for commercial use or is it a residential mailbox lock?
Commercial. The 4101 is specified for multi-tenant residential buildings, office mail centers, schools, healthcare and municipal mail rooms, where boxes are opened daily and Grade 1 durability is the reason to move off a factory wafer cylinder.
How fast can I get the Sargent SGT-4101 LA 15 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sargent SGT-4101 LA 15 come with a warranty?
Absolutely. The Sargent SGT-4101 LA 15 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sargent SGT-4101 LA 15?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sargent SGT-4101 LA 15 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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