Fleet typeIdentity
Owner-operator
2 power units. Brokers price each fleet type apart.
Carrier profile · USDOT 3765638
MASON SUPPLY SOURCE LLC
DBA STONEWORKS
2 power unitsavg 19.5 yrLocal · 1 statesISLANDIA, NY
CARRIER ACTIVE
Observed fleet · trailing 24 mo daily
2Power units
2 observed · MCS-150
—Trailers seen
None observed · 24 mo
19.5Avg age (yr)
2006–2007 · vPIC
Click to see how we scored it
Load decision · FMCSA snapshot · 2026-06-13
Clear to load
Active authority and a clean federal record. No blocking issues found.
No reported crashesDriver out-of-service rate well above average
Operating authority44 yr active
since 2021Insurance (BIPD)Unknown
FMCSA L&IVehicle OOS · 24mo20.020.0 %
▼ 22.26% nat'lCrashes · fatal00
clean 24 moVektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet age vs peersOlder
19.5 yr
Model years 2006–2007 · peer benchmark computing.
Identity stabilityStable
4 yr unchanged
Same registration since 2021 — no chameleon / reincarnation signal.
AI readFull read
Is MASON SUPPLY SOURCE LLC safe to work with?
Is MASON SUPPLY SOURCE LLC safe to load? MASON SUPPLY SOURCE LLC (USDOT 3765638) is an active owner-operator motor carrier based in ISLANDIA, NY, operating 2 power units and 1 driver. Operating authority has been active 4 years (past the 24-month broker-confidence threshold). Across 8 roadside inspections, its vehicle out-of-service rate is 20.0% (below the 22.26% national average), with 0 reportable crashes in the last 24 months. FMCSA has not assigned a safety rating. Vektor rates it clear to load (88/100), with the leading concern: driver out-of-service rate well above average. Source: FMCSA SAFER/MCMIS, last updated 2026-06-13.
FMCSA fields + Vektor analysis · updated 2026-06-13
MSMASON SUPPLY SOURCE LLC 88
01
Safety
8 inspections · 24 mo · vs national benchmarks
Out-of-service rate· trailing 24 months vs national benchmark
Vehicle OOS 20.0% (24-mo)5 veh insp · 24-mo · nat'l 22.26%
050%nat'l 22.26%
Driver OOS 20.0% (24-mo)5 drv insp · 24-mo · nat'l 6.67%
030%nat'l 6.67%
OOS trajectory· trailing 6-mo vehicle-OOS rate vs national
33.3% now▼ Improving
Inspection coverage· expected vs observed · the fraud signal
Inspection coverage
How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.
Under-inspected
Expected
Well-monitored
Heavily inspected
≈1.3 / unit·yr
thin signalabundant signal
Within the expected band for a 2-unit fleet — FMCSA has inspected this carrier often enough that the out-of-service and violation signals above are statistically trustworthy.
- Registered power units
- 2
- Inspections · 24 mo
- 5
- Annualized
- ≈3 / yr
- Coverage
- ≈1.3 inspections / unit · yr
Violation themes· decoded · grouped by BASIC
What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.
- 391.41 No / expired medical certificateDriver Fitness2 · 1 OOS
- 393.11 Required lamps/reflectors missingVehicle Maintenance1
- 391.11 Driver not qualifiedDriver Fitness1 · 1 OOS
- 393.60 Windshield / glazingVehicle Maintenance1
- 393.9 Inoperative required lampsVehicle Maintenance1
- 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance1
- 393.41 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 1 OOS
02
Authority & insurance
Can they legally + adequately haul your load?
Insurance continuity· insurer · policy · lapses
No insurance filing history on record.
03
Equipment & fleet
VIN-decoded · NHTSA vPIC
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 2
- Observed power (24 mo)
- 2
- Trailers (towed)
- 0
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2007
Newest model yr
2006
Oldest model yr
VINs decoded
04
Operations & lanes
Revealed by inspection density across 1 states · 24 mo
Operating footprint· revealed by roadside-inspection geography
Operating radiusLocal
revealedStates observed11
US statesInspections · 24 mo55
NY busiestInspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
ISLANDIA, NY
Top corridor
NY
Density
fewermore
05
Network & fraud
Affiliated entities & reincarnation signals · for review, not a verdict
Shares a registration email domain with other carriers
@9brothersbuilding.com — 2 carriers: USDOT 1144895
Shares a company officer with other carriers
tony palmieri — 3 carriers: USDOT 895707USDOT 1144895
Capacity consistency· registered vs roadside-observed power units
Registered (MCS-150)22
Observed (24 mo)22
Registered and roadside-observed capacity are broadly consistent.
06
Identity & contact
FMCSA census + L&I dossier
Location
- Physical address
- 163-165 BRIDGE RD STE 100, ISLANDIA, NY, 11749
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (631) 273-3323
- Cell
- (914) 906-4535
- Fax
- (631) 273-3457
- Web domain
- 9brothersbuilding.com
Registration
- Officer
- Tony Palmieri
- USDOT / docket
- 3765638
- First registered
- 11/16/2021
- Last MCS-150
- 04/13/2026 · 20,000 mi (2025)
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
—CDL drivers
07
Federal activity
Daily-captured FMCSA licensing & insurance changes — monitored by Vektor
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.
08
Reviews
Verified broker, shipper & driver reviews — moderated
Performance ratings only — never the Vektor risk score
No verified reviews yet
Be the first broker or shipper to rate MASON SUPPLY SOURCE LLC. Reviews cover performance only — on-time delivery, payment speed, communication — and never affect the Vektor risk score.
Leave a review09
Frequently asked
What is MASON SUPPLY SOURCE LLC's USDOT number?
MASON SUPPLY SOURCE LLC's USDOT number is 3765638.
Is MASON SUPPLY SOURCE LLC authorized to operate?
As of 2026-06-13, MASON SUPPLY SOURCE LLC is active in the FMCSA register.
What is MASON SUPPLY SOURCE LLC's safety record?
MASON SUPPLY SOURCE LLC has a 20.0% vehicle out-of-service rate (national average 22.26%) across 8 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 88/100 (tier: clear).
How big is MASON SUPPLY SOURCE LLC's fleet?
MASON SUPPLY SOURCE LLC operates 2 power units and 1 driver per its most recent MCS-150 filing.
Where is MASON SUPPLY SOURCE LLC based?
MASON SUPPLY SOURCE LLC is based in ISLANDIA, NY, with roadside inspections recorded across 1 state.