Sargent 590 Series surface Mount Overhead Stop & Holder

The Sargent 590 Series is the heavy-duty surface mount overhead stop and holder line from Sargent Manufacturing, an ASSA ABLOY company. If you searched "sargent overhead stops", "590 series", "sargent 698s", or "cylindrical door stop" - every product in this category is stocked and ships same day from American Locksets.

Why Overhead Stops and Holders Protect Commercial Doors Better Than Floor and Wall Stops

A door that swings uncontrolled into a wall stop, baseboard, or floor bumper transfers its full kinetic energy into a single impact point at the moment of contact. Over time, that repeated loading damages door hardware, cracks frames, strips hinge screws, and deteriorates closers. On high-traffic doors in schools, hospitals, government buildings, and industrial facilities, that damage happens faster than most facility managers realize - and the cost of replacing a complete door assembly or repairing a damaged frame is significantly higher than the cost of the overhead stop or holder that would have prevented it.

An overhead stop solves this by distributing door control across the entire arc of swing rather than at a single endpoint. Every Sargent 590 Series overhead stop and holder includes a heavy-duty spring built into the mechanism. As the door approaches the set stop position, that spring absorbs the impact energy over 3 to 9 degrees of travel before the mechanical stop engages. The energy doesn't hit one point on a wall. It dissipates progressively through the spring, then through the stop mechanism, then into the structural door frame where it belongs.

That engineering is why Sargent overhead stops and holders have been the commercial specification standard for decades.

Sargent 590 Series: Heavy Duty Surface Mount for Exterior and High-Abuse Interior Doors

Surface Mount vs Concealed: When the 590 Is the Right Call

The Sargent 590 Series is surface applied. The arm and track mount on the door face and frame head. From outside the door you can see the hardware. The 690 Series concealed alternative mortises the mechanism inside the door edge and frame - nothing is visible when the door is in any position.

The 590 Series is the correct specification for applications where structural robustness is the priority over aesthetics. Exterior doors, loading dock entries, gymnasium doors, service corridors, and any high-abuse application where the arm and track need to be accessible for maintenance and adjustment. The visible design also means simpler installation - no mortise routing in the door edge or frame head, no precise alignment of concealed components.

Stop vs Holder: Choosing the Right Function

Every Sargent 590 Series unit comes in two configurations, designated by the letter suffix.

The S designation is stop only. The door travels to the set angle and stops. It doesn't stay open on its own. For fire-rated doors and openings where code prohibits automatic hold-open without electromagnetic release, stop-only is the required specification. The door can be pushed open to the set angle repeatedly, and the spring absorbs the impact each time without the door bouncing back.

The H designation is holder. The holder adds an on/off knob that engages and releases the hold-open function. When activated, the holder keeps the door open at the set angle without anyone holding it. When deactivated, the door closes normally under its closer. The holder turn knob on Sargent 590 and 690 Series products is finished and built without any exposed screws - it matches the surrounding hardware finish rather than showing raw hardware.

For fire-rated held-open openings, the holder must connect to an automatic release system tied to the fire alarm. On non-fire-rated openings where hold-open is simply a convenience function, the manual H holder is the standard specification.

Sargent 698S: The 690 Series Concealed Alternative

When to Specify Concealed Over Surface Mount

The Sargent 698S overhead concealed stop belongs to the 690 Series, which is the concealed version of the same heavy-duty platform. Where the 590 Series mounts on the door face and frame head, the 690 Series mortises into the door edge and frame head - arm and mechanism are completely hidden when the door is in any position.

The 690 Series is the correct specification for institutional and architectural applications where exposed hardware is a vandalism risk, an abuse target, or an aesthetic conflict. Hospital corridors, school hallways, government buildings, and any opening where the overhead hardware must present a clean, ligature-resistant, pry-resistant profile all call for concealed rather than surface mount.

The 698S specifically is the stop-only version in the 690 Series, sized for doors from 35-1/2 to 39-1/8 inches wide. It covers the standard 36-inch commercial door width range. The same 85 to 110-degree adjustable stop range, the same spring impact absorption, and the same UL classification apply.

What "Cylindrical Door Stop" Really Means

If you searched "cylindrical door stop" - that term is commonly used to describe overhead stops and holders where the main mechanism housing has a cylindrical profile. The Sargent 590 and 690 Series both use this form factor. The cylindrical body houses the spring mechanism, and the arm extends from that body to connect to the track mounted on the door or frame. It's the most common form factor for commercial overhead stops in institutional and commercial construction.

This is distinct from a surface floor stop (a rubber or metal bumper mounted to the floor) or a wall stop (a bumper mounted to a baseboard or wall). Overhead stops and holders control the door through the arc of its swing, not at a single impact endpoint. That's the fundamental engineering difference, and it's why overhead stops are the correct specification for any commercial door that sees regular heavy use.

Specifications Common to the Sargent 590 and 690 Series

All Sargent 590 and 690 Series overhead stops and holders share these core specifications. Door width coverage is 24 to 60 inches across the product family. Standard door thickness is 1-3/4 to 2 inches for the 590 Series and 1-3/8 to 1-3/4 inches for the 590 standard configuration, with options up to 3-1/4 inches thick for both series. Opening range is adjustable from 85 to 110 degrees. Spring impact absorption engages over 3 to 9 degrees before the stop position. Hardware is non-handed and reversible. Mortise nuts are supplied standard for standard door thickness ranges.

Certifications: ANSI/BHMA Grade 1 certified. UL 10B and UL 10C classified as miscellaneous fire door accessories. Both series are also available with Sargent's MicroShield antimicrobial silver-based finish coating, which is EPA and NSF approved and FDA listed - the correct option for healthcare, food service, and any environment where surface bacteria suppression is a specification requirement.

Finished rivets on all units secure the arm to the slide and jamb bracket. All fasteners are polished and finished to match the surrounding hardware. The holder turn knob on H function units has no exposed screws.

Which Sargent Overhead Stop or Holder Is Right for Your Opening?

Browse the full Sargent 590 Series overhead stop and holder lineup above. For concealed mount applications, the Sargent 698S concealed stop is the standard specification for most commercial door widths. For lighter-duty interior applications, the Sargent 1530 concealed and 1540 surface mount series cover standard interior doors without the heavy-duty overhead mass of the 590 and 690 platforms.

Frequently Asked Questions: Sargent Overhead Stops and Holders

Q: What is the difference between the 590 and 690 Sargent Series? 

The 590 is surface mounted - arm and track are visible on the door face. The 690 is concealed - mortised inside the door edge and frame head with nothing visible.

Q: What does the S and H suffix mean on Sargent overhead products?

 S = stop only. H = holder with on/off hold-open knob. Stop-only is required on fire-rated doors without electromagnetic release systems.

Q: What degree of opening do Sargent 590 overhead stops cover?

 All 590 and 690 Series units are adjustable from 85 to 110 degrees. The angle is set at installation. They cannot change degree on their own.

Q: How does the spring work on Sargent overhead stops? 

The built-in heavy-duty spring absorbs door impact over 3 to 9 degrees of travel before the mechanical stop engages. This protects the door, frame, and closer from repeated slam loading.

Q: Is the Sargent 590 Series UL listed for fire doors?

 Yes. Both the 590 and 690 Series stops are UL 10B and UL 10C classified as miscellaneous fire door accessories.

Q: What is the Sargent 698S? 

The 698S is the stop-only model in the Sargent 690 Series concealed mount platform. It covers doors from 35-1/2 to 39-1/8 inches wide in satin chrome finish.