What is the best commercial mortise lock?

The Schlage L9000 is the most widely specified. The Sargent 8200 has the highest cycle count at 14M+. The Corbin Russwin ML2000 is heavily specified on government projects. All are ANSI/BHMA Grade 1.

What is the difference between Grade 1 and Grade 2 locks?

Grade 1 locks are tested to 1,000,000+ cycles with higher impact resistance. Grade 2 are rated for 250,000 cycles. Grade 1 is standard for commercial exterior doors and high-traffic areas.

What is the best door lock for school classrooms?

The Schlage ND78 classroom security lock allows locking from inside without opening the door, meets ADA requirements, and maintains fire egress compliance.

What is the difference between Schlage ND and ALX?

ND is Grade 1 with 1M+ cycles and electrified options. ALX is Grade 2 with 250K cycles and modular chassis at lower cost. They share the same lever designs.

What is the most common commercial door closer?

The LCN 4040XP is the most widely specified surface-mounted commercial door closer in the US, covering sizes 1-6 and all three mounting types.

What locks are used in hospitals?

Grade 1 mortise locks on high-traffic doors, cylindrical locks on patient rooms, electronic access with audit trails on pharmacy and restricted areas.

How much cheaper is wholesale vs retail door hardware?

Wholesale pricing on commercial door hardware is typically 20-40% below manufacturer list price. Project quotes for large orders can be even lower.

Stanley Security F179 3-1/2X3-1/2 26D Five Knuckle

Descriptions

Five Knuckle Architectural Hinge, Steel Full Mortise, Standard Weight, 3-1/2" by 3-1/2", Square Corner, Satin Chrome

Type	Title	URL
technical-documents	1" Narrow Utility Hinge 838t - Tech Drawing	https://marketing-assets.seclock.com/image/upload/838t_1_removable-pin-hinges_techdrawing
	Hinge Size Chart	https://marketing-assets.seclock.com/image/upload/hinge-size-chart
	838 1 1/2" - T Narrow Utility Hinge	https://marketing-assets.seclock.com/image/upload/838t_1-5_removable-pin-hinges_techdrawing
	838 2" - T Narrow Utility Hinge	https://marketing-assets.seclock.com/image/upload/838t_2_removable-pin-hinges_techdrawing
	838 2 1/2" - T Narrow Utility Hinge	https://marketing-assets.seclock.com/image/upload/838t_2-5_removable-pin-hinges_techdrawing
	838 3" - T Narrow Utility Hinge	https://marketing-assets.seclock.com/image/upload/838t_3_removable-pin-hinges_techdrawing
	National 280 Strap Hinge	https://marketing-assets.seclock.com/image/upload/n127-357-280-light-strap-hinges_techdrawing
instructions	Hinge Installation	https://marketing-assets.seclock.com/image/upload/hinge-installation
catalogs	Stanley Hinges Catalog	https://marketing-assets.seclock.com/image/upload/General_Hinge_Information_ST-HI-0007_WEB
cut-sheets	Stanley Architectural Hinges Cut Sheet	https://marketing-assets.seclock.com/image/upload/BB95_225R

Specifications

Brand:

Stanley Security

Series:

Stanley Architectural Hinges

Manufacturer:

Stanley Security

Commercial Residential:

Commercial

Corner Type:

Square

Finish:

626/US26D

Finish Description:

Satin Chrome

Knuckle:

Sub-Type:

Hinges

Type:

Hinges and Pivots

UPC:

8.87838E+11

Uid:

STA100F179312X31226D

Url Title:

f179-3-1-2x3-1-2-26d

Title:

F179 3-1/2X3-1/2 26D Stanley Security Hinges and Pivot

Sub Type:

Hinges

Last Modified:

2025-02-18T02:36:06+00:00

Last Pricing:

2025-01-31T05:00:00+00:00

Msrp:

8.00

Avg Lead Time:

Finish Family:

Matte Silver

Popularity:

Vendor:

DormaKaba

Finish A:

626/US26D

Stanley Security F179 3-1/2X3-1/2 26D Five Knuckle Architectural Hinge Steel Full Mortise Standard Weight 3-1/2 by 3-1/2 Square Corner Satin Chrome