Stanley / BEST 8K30N 4A-S3-626 Grade 1 Passage Knob Set - A Round Rose - Satin Chrome

The Stanley / BEST 8K30N is a Grade 1 heavy-duty cylindrical passage knob set built for institutional and commercial doors in hospitals, universities, government facilities, and multi-occupancy buildings. Passage function means both knobs rotate freely at all times, retracting the latchbolt from either side without a key. This configuration ships with the A round rose (3-3/8" diameter), S3 ANSI strike, and BHMA 626 satin chrome finish. It belongs to the BEST 8K Series Grade 1 lineup under Cylindrical Knob Locks within Commercial Locks.

Is the Stanley BEST 8K30N the same as a residential Stanley door knob?

No. Stanley / BEST is a commercial hardware brand under Dormakaba, and the 8K series shares nothing with the residential Stanley door hardware sold at home improvement stores. The 8K30N carries ANSI/BHMA A156.2 Series 4000 Grade 1 certification, UL listing for 3-hour A label fire doors, and California State Fire Marshal listing. Knobs are machined from solid brass or bronze, not die-cast zinc. Roses are brass or bronze with steel reinforcing liners threaded directly to the chassis. If your spec sheet calls out Grade 1 or ANSI A156.2 Series 4000, this is the correct product. If you need a residential passage knob, this is not the right product.

How do you read the 8K30N 4A-S3-626 model code?

8K = series (heavy-duty cylindrical knob). 30N = function (passage, both knobs always free). 4 = chassis and trim style. A = rose style (round rose, 3-3/8" diameter). S3 = strike style (4-7/8" x 1-1/4" curved lip and box, ANSI A115.2). 626 = BHMA finish code for satin chrome. Reading the model code upfront prevents ordering the wrong rose style, strike, or finish for the opening. Most 8K functions use the same 2-1/8" door bore prep and the same 1" edge hole, so specifying a different function such as entrance or storeroom at ordering time does not require changing door prep on most standard commercial doors.

What certifications does the BEST 8K series carry?

The 8K series carries three listings that matter for commercial and institutional specifications. BHMA listing for ANSI A156.2 Series 4000 Grade 1 covers strength, cycle, and operational performance requirements. UL listing qualifies the 8K30N for use on 3-hour A label single and double swinging fire doors. California State Fire Marshal listing covers California-specific code compliance for healthcare and education occupancies. That certification stack qualifies the 8K30N for virtually every commercial occupancy type without additional compliance review at the AHJ level.

How does the BEST 8K30N compare to the Corbin Russwin CK4310 and Arrow HK01 passage knobs?

The Corbin Russwin CK4310 is the direct comparable from Corbin Russwin's CK4000 Grade 1 knob series. Both carry ANSI A156.2 Grade 1 and UL fire listings. The 8K series differentiator is the interchangeable rose and trim system: swapping rose styles or functions on an existing 8K installation does not require a full lock replacement. The CK4310 is preferred on Corbin Russwin SFIC key systems; the 8K30N is preferred on BEST SFIC or BEST large format IC master key systems. Match the lock to your site's existing key system first, then the function. For budget-tier Grade 1 passage knob installations, the Arrow HK01 covers the same passage function at the lower end of the commercial Grade 1 price range.

Specifications

SKU: 8K30N4AS3626. Function: Passage (30N). Rose: A round, 3-3/8" diameter, brass/bronze with steel liner. Chassis: 2-1/16" for 2-1/8" door bore. Backset: 2-3/4" standard, 3-3/4" and 5" available. Latch: 9/16" throw, 2-1/4" x 1-1/8" beveled front, fits 1" edge bore. Knobs: solid brass or bronze, 2-7/8" diameter. Door thickness: 1-3/8" to 2" adjustable. Strike: S3, 4-7/8" x 1-1/4" curved lip and box, ANSI A115.2. Finish: 626 Satin Chrome. Certifications: ANSI A156.2 Series 4000 Grade 1, UL 3-hour A label, CSFM listed.