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Carrier profile · USDOT 45597 · MC76472 · Data as of Oct 7, 2026

Diamond Materials LLC

Wilmington, DE · Interstate for-hire carrier · Since 1974
Authority active$1M BIPD on fileConditional ratingHazmat
Cargo carriedLogs, Poles, Beams, LumberBuilding MaterialsMachinery, Large ObjectsLiquids/GasesGarbage/RefuseChemicals+2 more
View on FMCSA SAFERCall (302) 658-6524
139
Power units
117
Drivers
136
Inspections · 24 mo
9
Crashes · 24 mo
677K
Annual miles
52 yr
Registered
90
/ 100
Clear to load

Operating legally, with one flag to weigh

Authority and insurance are in order. Conditional FMCSA safety rating.

How we scored it · 5 factors
Operating authority20/20
Insurance20/20
Out-of-service rates20/20
Crashes & rating10/20
Continuity & identity20/20

Composite of public FMCSA authority, insurance, inspection and crash records weighted against the national fleet. Decision support, not an official FMCSA safety rating.

Safety

FMCSA inspections & crashes · 24 mo · AS OF OCT 7, 2026
Vehicle out-of-service
8.6%▼ below avg
National 22.26% · 8 of 93 inspections
Driver out-of-service
2.2%▼ below avg
National 6.67% · 3 of 136 inspections
Crashes
9
0 fatal5 injury9 tow-away
Crash rate 6.65 per 1M mi
Total inspections
136
Driver inspections
136
Vehicle inspections
93
People injured
6
Fatalities
0
FMCSA rating
Conditional (1988)

Enforcement

FMCSA closed cases

Closed enforcement cases — case numbers, violation codes and the amount settled — are available after you create a free account.

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Authority & insurance

FMCSA L&I · AS OF OCT 7, 2026
Carrier
Active
Broker
None
Docket
MC76472
Revocation pending
No
Motor Carrier of Property (Except Household Goods)

Coverage vs federal minimum

BIPD liability$1,000,000
$1M required minimum (49 CFR 387.9)
CargoNot required

Filings on record

  1. Jan 1, 2012Liability (BIPD) · Arch Insurance Company · $1,000,000

Equipment

SELF-REPORTED ON MCS-150
139
Power units
136
Trucks
19
Tractors owned
35
Trailers owned
117
Drivers
117
CDL drivers
Registered to haul hazardous materials.

Operations & cargo

FMCSA CENSUS
InterstatePrivate PropertyAuthorized for Hire
Cargo carried
Logs, Poles, Beams, LumberBuilding MaterialsMachinery, Large ObjectsLiquids/GasesGarbage/RefuseChemicalsCommodities Dry BulkConstruction
Annual mileage
676,737 mi (2025)

Identity & federal record

FMCSA census · MCS-150
USDOT
45597
MC / docket
MC-76472
Legal name
Diamond Materials LLC
DBA
—
Entity type
Carrier
Operation
Interstate
First registered
Jun 1, 1974
Last MCS-150
Jul 2, 2025
Safety rating
Conditional
Drivers (CDL)
117 (117)
Hazmat
Yes
Business type
Corporation

Fraud & network signals

For review, not a verdict.

No prior revocation
FMCSA shows no link to a previously revoked authority.
Shared phone number
Same phone number as 1 other active USDOT.
Unique email address
Not shared with any other active USDOT.
Unique street address
Not shared with any other active USDOT.
Sharing this phone number · (302) 658-6524

Shared contact details can mean affiliated companies or a registration service, but they are also a common sign of chameleon carriers and identity theft. Confirm you're dealing with the company you expect.

Frequently asked

What is Diamond Materials LLC's USDOT number?

Diamond Materials LLC's USDOT number is 45597 and its docket number is MC76472.

Is Diamond Materials LLC authorized to operate?

Yes. FMCSA shows active carrier operating authority.

What is Diamond Materials LLC's safety record?

Over the last 24 months: 136 roadside inspections, a 8.6% vehicle and 2.2% driver out-of-service rate, and 9 reportable crashes (0 fatal). FMCSA safety rating: Conditional.

How big is Diamond Materials LLC's fleet?

139 power units and 117 drivers per its MCS-150 filed Jul 2, 2025.

What insurance does Diamond Materials LLC carry?

$1,000,000 in BIPD liability coverage is on file with Arch Insurance Company.

Where is Diamond Materials LLC located?

Diamond Materials LLC is located at 924 S Heald St, Wilmington, DE, 19801. Phone: (302) 658-6524.

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Source: FMCSA public records via the U.S. DOT Open Data Portal. Carrier Search presents the federal record and computed signals for decision support only. It is not an FMCSA safety rating and not a recommendation to use or avoid any carrier. Verify authority and insurance before tendering.