Sargent Lock Rekeying: The Maryland Owner’s Guide
Sargent lock rekeying in Maryland typically runs $45-$85 per cylinder when done on-site, and we carry the full pin kit and key blanks for Sargent 6300, 6500, and 4800 series on every truck. Most residential rekeys in Maryland are finished in under 45 minutes, same day you call. Homeowners usually figure out something’s wrong when a new tenant moves in, a key goes missing after a contractor finishes up, or they realize the previous owner handed out more copies than they thought.
Which Sargent Models This Applies To
Sargent’s residential and light commercial lines have been running through Maryland homes since the 1970s, and the cylinder design hasn’t changed as much as you’d think. The 6300 series rim cylinders, 6500 series mortise cylinders, and the newer 4800 series deadbolts are what we see most in Baltimore County and Howard County houses built between 1985 and 2010. Check the face of the cylinder for a small “SARGENT” stamp and a series number; if that’s worn off, measure the cylinder diameter, 1-5/32 inches is the giveaway for the 6300/6500 family.
Here’s where it gets specific: Sargent uses a .115 inch bottom pin and a .137 inch top pin, which is not interchangeable with Schlage or Kwikset hardware. We’ve had Maryland homeowners buy “universal” rekey kits online and find out the hard way that the pins seat wrong and the key binds. We stock genuine Sargent pinning kits and also carry Lab and HPC aftermarket equivalents that meet the same tolerances. For a lock that’s protecting your home in Maryland, we generally recommend staying with OEM pins, the nickel silver alloy holds up better in our humidity swings than the cheaper brass substitutes.
Signs Your Sargent Lock Rekeying Is Failing
- Key turns but doesn’t retract the latch. The tailpiece or cam inside the cylinder has worn out of spec, usually from years of forcing a sticky key. This is common in Maryland’s older homes where the original Sargent mortise hardware has seen three decades of use.
- Key sticks at certain angles or needs jiggling. Worn pin chambers or a key that’s been recut too many times. We’ve found this in Rockville and Gaithersburg homes where owners kept duplicating a worn master key instead of rekeying.
- Different keys operate the same lock. A “ghost key” situation means the pin stacks have worn so low that multiple key bittings will lift them to the shear line. This is a security failure, not just an annoyance.
- Key won’t insert fully or feels gritty. Debris in the keyway or corrosion from Maryland’s humid summers. Sargent cylinders have a tight keyway that doesn’t forgive dirt the way some cheaper brands might.
- Lock was rekeyed before but now acts up again. Previous rekey used wrong-diameter pins or a locksmith skipped the master pin when converting from a master-keyed system. We see this in Columbia townhomes that came with Sargent master-keyed entry sets.
Replacement Cost & What’s Included
| Service | Price Range |
|---|---|
| Single Sargent cylinder rekey (residential) | $45 - $65 |
| Double-cylinder deadbolt rekey | $75 - $85 |
| Master key system rekey (per cylinder) | $55 - $75 |
| New keys cut (standard) | $4 - $6 each |
| High-security key (Sargent Signature if applicable) | $18 - $28 each |
What drives the range: whether it’s a simple 5-pin residential cylinder or a 6-pin commercial core, whether we need to extract a broken key first, and whether the existing pins are so worn we replace the full stack. Our price includes disassembly, pinning to your new key, reassembly, and testing. Every rekey carries our 90-Day Done Right Promise, backed in writing. No paperwork to file if something’s off, we just come back.
Seniors and veterans receive a standing 5% discount. If your total repair bill tops $250, ask about our $50 off offer when you call.
DIY or Call Us?
There’s nothing dangerous about rekeying a Sargent cylinder, it’s not a spring-loaded garage door or live electrical work. But there are about fifteen small parts inside that cylinder, and if you drop the follower pin while removing the plug, you’re fishing brass out of your carpet. The real risk is reassembling with wrong pin heights and ending up with a lock that opens with half the neighborhood’s keys, or none of them.
What you can safely check: confirm it’s actually a Sargent (look for the stamp), count how many keys you need, and make sure you have a working key to remove the cylinder. If the key is lost or the cylinder is stuck in the housing, that’s where our tools and experience save you an afternoon of frustration. We’ve rekeyed Sargent hardware in Maryland for 42 years. Tell me what you need, I’ll tell you what it costs, and we’ll get it done right.
Call (844) 314-7347 for a flat price before we roll. Estimates are free, and a live person answers, 24/7.
FAQs
A properly rekeyed Sargent cylinder should last 10-15 years under normal residential use in Maryland. Our humid summers can accelerate wear in cheaper hardware, but Sargent’s nickel silver keyways and brass pin chambers hold up well if the original key isn’t worn when we cut your new one.
Rekeying is the repair for most pin-and-tumbler issues. If the cylinder body itself is cracked or the plug is worn oval, rekeying won’t help and we replace the cylinder. We stock Sargent replacement cylinders on our trucks for Maryland calls, so you won’t wait on parts.
Most single-cylinder rekeys take 20-30 minutes. A full house rekey with four or five Sargent locks runs about 90 minutes. We work efficiently because Gerald Pittman trained our technicians to organize their pinning kits the same way he’s organized his own workbench for 28 years.
We stock Sargent pinning kits, key blanks, and replacement cylinders on every Maryland service vehicle. Same-day completion is standard, not an upgrade. Call (844) 314-7347 and we’ll confirm your model over the phone so the technician arrives ready.
Written by Gerald Pittman, Owner, Strongbox Lock & Safe Co. of Maryland at Strongbox Lock & Safe Co. of Maryland, serving Maryland and nearby areas.