🚀Major update: Network Intelligence is live — carrier detail pages, vetting reports, and graph exploration.See what's new →
Truck Graph
0/100
✗ Do Not Tender
No active for-hire authority. Cannot legally haul freight for hire.
Diamond Trucking
DOT 2537712 · Mccormick, SC
Report generated: June 4, 2026 at 12:36 PM
✗Authorized for hire?
✗Active insurance?
✓Safety record clean?
✓No fraud flags?
✓No prior revocations?
Carrier Summary

Diamond Trucking (DOT 2537712) is a South Carolina-based intrastate carrier headquartered in Mccormick, SC. As of June 4, 2026 at 12:36 PM, operating authority is active but without for-hire authority. TruckGraph has detected 1 risk signal on this carrier, including: no active insurance filing on record. TruckGraph rates this carrier "Do Not Tender" based on FMCSA compliance data, inspection history, insurance status, and network connection analysis. Last synced: June 4, 2026 at 12:36 PM.

FMCSA Public Record
Herbert Letman
Operating as: Diamond Trucking
DOT Number2537712
MC Number—
Street123 WELLS RD
City / StateMccormick, SC 29835
Phone8646029873
Operation typeIntrastate
HazmatNot authorized
Authority age11 yr 9 mo
MCS-150 filed08/04/2025
Company officerHerbbert Letman
Power units1
Total drivers1
Authority Status
Common (for-hire)—
Contract (for-hire)—
Broker—
TruckGraph Intelligence
Risk Signals
●No active insurance filing on record
✓ OFAC Sanctions: Clear
Connection Chain
LET-BRO TRUCKIN LLCShared address
Active
Network Intelligence Map
Carriers sharing an officer, address, or phone with Diamond Trucking
View full network →
Power Units
1
Fleet
Drivers
1
Total
Inspections
0
On record
Crashes
0
On record
OOS Rate
—
↓ Avg 22.26%
Authority Age
11 yr 9 mo
Since 2014
Inspection History
0 total · No inspections

No inspection records on file.

Crash History
0 total on record

No crash records on file.

Insurance Status
⚠ No active insurance filing on record
Verify insurance directly with carrier before tendering any load.
Location
123 WELLS RD, Mccormick, SC, 29835 · Open in Maps →
123 WELLS RD, MCCORMICK, SC, 29835Open in Maps →
Authority Timeline
Authority GrantedSep 2014
FMCSA issued operating authority
Active USDOT — No for-hire authorityCurrent
USDOT record is active but no for-hire operating authority is currently granted

Source: FMCSA compliance records, inspection data, crash records, insurance filings, and TruckGraph analysis. View methodology

Important Legal Notice

Data sourced from FMCSA public records and TruckGraph independent analysis. This is not legal advice, not a guarantee of carrier safety, and not a compliance certification. Verify through official FMCSA sources before tendering. Last synced: .

Verify Independently
Related Carriers in South Carolina
Community Reviews

No reviews yet — be the first to share your experience with this carrier.

Write a review for Diamond Trucking
0/2000

Reviews are moderated before publication. We do not publish email addresses.

Frequently Asked Questions

Is Herbert Letman authorized to operate?

Herbert Letman's USDOT number is active but it does not hold operating authority for for-hire interstate operations. It may operate as a private carrier. Verify status before tendering.

What is Herbert Letman's safety record?

Herbert Letman does not have a substantial inspection history on record. This may indicate limited interstate operations.

How many trucks does Herbert Letman operate?

Herbert Letman operates 1 power units with approximately 1 drivers.

Is Herbert Letman insured?

Insurance filing details are not available in the current dataset. Verify directly with the carrier before tendering.

Has Herbert Letman had any risk indicators?

Herbert Letman has a risk score of 0/100 (Monitor) with 1 active risk signal. Review the risk section above and verify independently before tendering.

What is the DOT number for Herbert Letman?

Herbert Letman's DOT number is 2537712. These identifiers are assigned by the FMCSA and can be used to look up this carrier in official compliance databases.

Explore Carriers Like Diamond Trucking
Cite this page

For journalists and researchers

Truck Graph data is open and citable. For press inquiries, contact our editorial team.

APA
Truck Graph. (2026). Diamond Trucking Safety Record, DOT 2537712. Retrieved from https://truckgraph.com/carriers/2537712
MLA
"Diamond Trucking Safety Record, DOT 2537712." Truck Graph, Jun 4, 2026, https://truckgraph.com/carriers/2537712
Chicago
"Diamond Trucking Safety Record, DOT 2537712." Truck Graph. Last modified June 4, 2026. https://truckgraph.com/carriers/2537712