Rockwood 582 Surface Bolts, 8" Bolt Length

The bolt throws 1-1/8 inches, off a bolt bar measuring 1/4 by 3/4 inch. That throw is what has to reach your strike, so on a bottom application check the undercut at the floor and on the head check the gap to the frame. The 582 ships with both a universal top strike and a mortise bottom strike, so you get the hardware for either end in the box.

Mounting hardware is in the box for either a wood or a metal door. The bolt itself gets 4 each #10-24 x 1-1/2 inch PH machine screws or 4 each #10 x 1-1/4 inch PH wood screws, and the strikes get 6 each #10-32 x 1-1/2 inch FH machine screws or 6 each #10-32 x 1-1/2 inch FH wood screws. Sex bolts are available as an option where you want a through-bolted, more secure mounting, which is worth specifying on a high abuse or detention-type opening.

Yes, it is certified to ANSI A156.16 with the type designation L04161, which is the auxiliary hardware standard surface bolts fall under. If your spec or submittal calls out an A156.16 L041 series bolt, this satisfies it, and it is a commercial grade product rather than a residential one.

The Rockwood 582 series is the version with a bracket for a padlock, padlock not included, and it ships with a universal top strike and a mortise bottom strike. On the Ives side, the locking surface bolt in that family is the SB1630, a heavy duty steel locking surface bolt with a 1 inch throw and keyed security. The security method is the difference to plan around: the 582 secures with a padlock you supply through the bracket, while the SB1630 secures with a key cylinder built into the bolt. If your building already keys everything, the SB1630 folds into the key system; if you want the door secured with a padlock the maintenance crew already carries, the 582 bracket is the arrangement that accepts it.

The Rockwood 580 and 582 bolts throw 1-1/8 inch, on 1/4 inch by 3/4 inch bolt material. When the opening needs the bolt to reach deeper - an oversized floor clearance, a deep header strike, or a frame condition that puts the strike further from the door face - the Ives SB1600 is a heavy duty steel surface bolt with a 3-1/2 inch throw, and the Ives SB360 is a heavy-duty steel surface bolt with a 1-1/4 inch throw in a 12 inch length. Measure from the door face to the seat of the strike before choosing; a longer bolt length is not the same as a longer throw, and it is the throw that has to cross the gap.

The padlock is not included. The 582 carries a bracket sized to take a padlock so the bolt can be locked in the thrown position, but you supply the lock. If you do not need that security feature, the No. 580 is the same bolt without the bracket.

Stainless steel is the substrate, and it is finished 630 satin stainless. That is the finish to hold to on exterior or wash-down openings and it is the standard match for the satin stainless push plates, pulls and exit hardware already on most commercial doors.

A surface bolt like the 582 mounts on the face of the door and can be added to an existing leaf with no mortising of the door edge, which is why it is the usual retrofit choice. A flush bolt is let into the door edge and disappears when the door is closed, so it is the cleaner look but it means prepping the door. The 582 also gives you the padlock bracket, which no flush bolt offers, so pick it where the inactive leaf needs to stay locked down rather than just held.

The 582 is an 8 inch stainless steel bolt with a 1-1/8 inch throw and a padlock bracket. Among the alternatives, the Ives SB360 is a heavy duty steel bolt with a 1-1/4 inch throw in a 12 inch length if you need to reach further, the Ives SB1630 is a heavy duty locking bolt with a 1 inch throw and keyed security rather than a padlock, and the Ives SB1600 is a heavy duty steel bolt with a 3-1/2 inch throw. Trimco's 4800 Series and the ABH HD1805, which uses an auto-locking 3/4 inch stainless bar, are the other commercial options. For decorative or residential work the Emtek 8511 and the Delaney solid brass bolts are brass rather than stainless.

The Ives SB1630 is the alternative to look at: it is a heavy duty steel locking surface bolt with keyed security and a 1 inch throw, so it locks with a key instead of an exposed padlock, and it carries a 3-hour UL listing. The Rockwood 582 gets its security from a padlock bracket that you supply the lock for, which is faster to install but leaves hardware exposed on the door face.

Both positions are covered. Two strikes ship with the bolt, a universal top strike for the head or frame and a mortise bottom strike for the floor, and the same 1-1/8 inch throw applies either way. Mounting screws for six strike holes are included, in both machine screw and wood screw form, so the strike can go into a hollow metal frame or a wood jamb.

They serve different openings. The Rockwood 582 is a commercial surface bolt in stainless steel, built to ANSI A156.16 L04161, offered in 630 satin stainless steel, with a padlock bracket and a universal top plus mortise bottom strike. The Delaney BV7600 is a decorative solid brass surface bolt and the Emtek 8511 is a solid brass surface bolt in a 6 inch length - both brass, both aimed at finish-sensitive interior work where the bolt is meant to read as part of the door's trim. If the bolt is going on a labeled pair, a stairwell, or a back-of-house door in a school or hotel, specify from the commercial side; if it is a French door or a millwork pair in a residence, the brass bolts are the ones detailed for that look.

The Rockwood 582 is a manual bolt - the operator throws the 1-1/8 inch bolt and, if the door is being secured, adds a padlock through the bracket. The ABH HD1805 is a heavy duty surface bolt with an auto-locking 3/4 inch stainless steel bar, so the locking action does not depend on someone remembering to throw it. That matters on inactive leaves that get propped and re-closed all day - a rear exit, a receiving door, a dock pair - where the manual bolt is only as good as the last person through. Where the leaf is set once per season and then left alone, the manual 582 is the simpler assembly and the padlock bracket gives you the option to lock it out.

The Rockwood 580 and 582 share one body: steel or stainless steel, ANSI A156.16 L04161, 1-1/8 inch throw, universal top strike and mortise bottom strike, with the 582 adding the padlock bracket and the 580 carrying the UL listing for the inactive leaf of a 3-hour labeled pair. The comparable commercial families are the Trimco 4800 series, the ABH HD1805 series, and the Ives heavy duty steel line - the SB1600, SB1630, and SB360. Standardizing usually comes down to three decisions made once and applied everywhere: whether your labeled pairs need a fire rated bolt, whether inactive leaves get secured by padlock or by key, and what throw your frame conditions actually require. Settle those and the family follows.

Length and throw are two separate dimensions and buyers mix them up constantly. The Rockwood 582 at 8 inch bolt length throws 1-1/8 inch regardless - the 8 inch is how far the bolt assembly runs along the door face, which sets how far the operating handle sits from the strike and how much of the door stile the bolt spans. The Ives SB360 in a 12 inch length throws 1-1/4 inch. A longer body puts the throw lever within reach on a tall leaf or spans more stile for a stiffer mount; it does not push the bolt deeper into the strike. Spec the length for reach and stile coverage, and the throw for how far it has to travel into the frame or floor.

On the Rockwood side the 582 gives you two things to work with: 1/4 inch by 3/4 inch bolt material on a 1-1/8 inch throw, and sex bolts available as an option for extra secure mounting, which is what stops the whole assembly from being pulled off the door face through the wood screws. Beyond that, the heavy duty steel bolts are the SB1600 with its 3-1/2 inch throw, the keyed SB1630, the SB360, and the ABH HD1805 with its 3/4 inch stainless steel bar. Deeper engagement into the strike and a heavier bar resist prying at the bolt; sex bolts resist attack on the mounting. A forced-leaf problem usually needs both addressed, not one.

Treat it as a new prep until you verify it. The Rockwood 582 comes with a universal top strike and a mortise bottom strike, and a mortise bottom strike means a pocket cut into the threshold or floor sized to that specific strike. The Trimco 4800 series is the comparable commercial surface bolt family, but a bottom strike from one manufacturer rarely lands on another's mortise footprint, and the bolt's mounting hole pattern on the door face is its own separate question. On a retrofit, pull the existing bolt, photograph the door-face screw pattern and the floor mortise, and match against the replacement before ordering the quantity for the building.

Yes. The 580 and 582 are the same series and both include a universal top strike and a mortise bottom strike; the padlock bracket is what the 582 adds. If nothing is ever going to be padlocked to the leaf, the 580 is the same bolt without that bracket, and it is the one carrying the UL listing for use on the inactive leaf of a pair of 3-hour labeled fire doors. Fastener kits differ by piece, so confirm what ships with the bolt and strikes before the crew is at the door: the 582 series is packaged with #10 x 1-1/4 inch and #10-24 x 1 inch flat head screws, and the bolt and strike packs list both machine screws and wood screws.