Sargent Deadbolt Installation: The Washington Owner’s Guide
A complete Sargent deadbolt installation in Washington typically runs $220-$380 depending on door prep and hardware grade, and we stock the full Sargent line for same-day service. Most homeowners call us after their key starts catching, the bolt sticks half-extended, or the thumb turn spins without moving the mechanism - signs the deadbolt body, cylinder, or internal cam has worn past the point of adjustment. We carry Sargent 6300, 480, and 8200 series deadbolts on every truck, along with the matching strikes and faceplates that actually fit Washington’s older door standards.
Which Sargent Models This Applies To
Sargent deadbolts fall into three families you’re likely to encounter in Washington homes and small commercial buildings. The 6300 series is the residential workhorse - single-cylinder, double-cylinder, and classroom function models with a 1-inch throw bolt and standard 2-3/8-inch or 2-3/4-inch backset. The 480 series covers light commercial duty with a heavier gauge faceplate and anti-saw pins. The 8200 series integrates with Sargent mortise locksets for buildings where the deadbolt and latch share a single prep.
Identifying your model starts with the keyway - LA, LB, or LD stamped on the key bow - and the faceplate screw spacing. The 6300 uses 2-1/4-inch center-to-center screws; the 480 moves to 2-3/8-inch. We’ve found aftermarket deadbolts labeled “Sargent-compatible” often miss this spacing by an eighth-inch, which leaves a gap visible from the street and weakens the strike engagement. We stock OEM Sargent cylinders and deadbolt bodies, plus select aftermarket equivalents from Medeco and Mul-T-Lock where the customer wants key control without the OEM price. For Washington’s pre-1980s homes with 1-3/4-inch thick doors, the standard 6300 trim ring often sits proud of the door surface; we carry the shallow-depth adapter kit that fixes it without re-prepping the door.
Strongbox Lock & Safe Co. of Washington is an independent service provider - not affiliated with Sargent - and we source parts through authorized distribution channels.
Signs Your Sargent Deadbolt Installation Is Failing
- Key rotates fully but bolt doesn’t extend. The tailpiece connecting cylinder to deadbolt body has sheared or the cam has rounded off its drive lugs. This is the most common failure we see in Washington’s Sargent installations from the 1990s and 2000s - the pot-metal cams fatigue after 15-20 years of daily use.
- Bolt extends halfway and jams. The bolt face has worn an angled path into the strike plate, or the internal rack-and-pinion mechanism has lost lubrication and picked up grit. Washington’s pollen-heavy springs push debris into door frames that works into the mechanism by fall.
- Thumb turn spins freely in both directions. The spindle connecting thumb turn to deadbolt body has broken at the shear line, or the retaining clip inside the housing has popped loose. This leaves the deadbolt operable only from the key side - a code violation for bedroom egress in many Washington jurisdictions.
- Door must be lifted or pressed to operate deadbolt. The door has settled on its hinges or the frame has swollen, misaligning bolt and strike by more than 1/8-inch. Sargent’s 1-inch throw has less tolerance for misalignment than some competitors; the bolt shoulder hits the strike lip and mushrooms over time.
- Key works in warm weather, sticks in cold. The cylinder pins and springs have worn to uneven heights, and thermal contraction in Washington’s 20-degree winter swings exposes the tolerance stack. This progresses to a snapped key if forced.
Replacement Cost & What’s Included
For a standard Sargent deadbolt installation in Washington, our installed pricing breaks down as follows:
| Service Level | Price Range | What’s Included |
|---|---|---|
| Direct replacement, same prep | $220-$280 | OEM or equivalent deadbolt, removal, installation, strike adjustment, 2 keys |
| New prep in metal or fiberglass door | $280-$340 | Above plus drilling, mortising, edge prep, clean finish |
| High-security cylinder upgrade (Medeco/Mul-T-Lock) | $340-$380 | Deadbolt body plus restricted-keyway cylinder, key registration |
What moves you up the range: door thickness over 2 inches requiring longer tailpieces, non-standard backset conversion, strike box reinforcement for kick-in resistance, or matching existing master-key systems. We quote the price before the truck moves. That’s just how this should work. Every installation carries our 90-Day Done Right Promise - backed in writing, no arguing, no extra paperwork. Seniors and veterans receive a permanent 5% discount on labor.
DIY or Call Us?
There’s a honest line here. A homeowner with a screwdriver and patience can swap a Sargent deadbolt into an existing, properly aligned prep - the two through-bolts and faceplate screws are straightforward. What goes wrong: misreading the backset and buying a 2-3/8-inch unit for a 2-3/4-inch door (or vice versa), stripping the aluminum faceplate screws with a power drill, or discovering the previous installer glued the old deadbolt in place and destroying the door trying to remove it.
Where we strongly recommend a professional: any door that needs new drilling, any double-cylinder installation where fire code compliance matters, and any situation where the key still operates but feels notchy - that wear pattern will transfer to a new cylinder and shorten its life. Dennis Wakefield has rekeyed enough Sargent cylinders in Courthouse Hill Victorians to know when a worn key is telling a deeper story. Call (888) 545-8474 and we’ll sort it out.
FAQs
A properly installed Sargent 6300 in a residential front door typically lasts 15-25 years in Washington’s mixed-humidity climate, though coastal salt air can cut that by a third if the finish is compromised. The cylinder usually fails before the bolt body - pins and springs are the wear items. Call (888) 545-8474 if your key is getting sticky; catching it early saves the cylinder.
Sometimes. A sticky cylinder can be disassembled, cleaned, and repinned; a loose faceplate can be re-secured with longer screws into the door framing. But once the cam, tailpiece, or bolt rack shows wear, repair costs approach replacement and doesn’t carry our 90-day guarantee. We give free second opinions on any written estimate you’ve received.
A direct replacement in an existing prep takes 30-45 minutes. New prep work in a solid wood door adds 45-60 minutes. We stock Sargent deadbolts on every truck, so there’s no waiting for parts.
We stock the full Sargent residential line - 6300 series in satin nickel, oil-rubbed bronze, and bright brass; 480 series in satin chrome and dull bronze; plus strikes, faceplates, and tailpiece kits for door thicknesses from 1-3/8 to 2-1/4 inches. For commercial 8200 series or restricted keyway orders, we can have parts next business day through our distributor.
Written by Dennis Wakefield, Owner & Master Locksmith, Strongbox Lock & Safe Co. of Washington at Strongbox Lock & Safe Co. of Washington, serving Washington and nearby areas.