Equipment unit · VIN-decoded · NHTSA vPIC

1999 Heil Trailer International

5HTSN4620X7W06261 · Trailer · TRAILER
Carriers run under1
28 mo
Inspections5
all-time
OOS inspections2
of 5
First seenJun 20, 2023
TX
Last seenOct 23, 2025
TX
01

Decoded identity

From the 17-character VIN via NHTSA vPIC

VIN
5HTSN4620X7W06261
Make
Heil Trailer International
Model
Heil Trailer International
Model year
1999
Body class
Trailer
Vehicle type
TRAILER
GVWR
Not decoded
Decoded at
Jul 5, 2026
vPIC returns make / model / year / body class / GVWR. Fields it does not resolve are shown as Not decoded rather than guessed.
Decode evidence & sources

Deterministic structure

These fields come directly from VIN positions and the published checksum calculation, with zero store IO.

World manufacturer identifier
5HT

Deterministic · VIN positions 1–3.

Vehicle descriptor section
SN462

Deterministic · VIN positions 4–8.

Check digit
0 · valid

Deterministic · position 9; calculated value 0.

Model year candidates
1999 or 2029

Position 10 repeats every 30 years; both candidates are retained and neither is silently selected.

North American serial sequence
W06261

Deterministic · positions 12–17 for a North American WMI.

Sourced platform inference

The prefix store publishes only at support ≥ 3 and purity ≥ 90%. Prefix confidence is shown beside every established platform claim.

Make
HEIL TRAILER INTERNATIONAL

Prefix basis · 11 decoded VINs at 100.0% prefix purity.

Model
Heil Trailer International

Prefix basis · 11 decoded VINs at 100.0% prefix purity.

Model line
Not established

No sourced model-line label is established.

No source established for this field.

Generation
Not established

No sourced generation label is established.

No source established for this field.

Cab type
Not established

No sourced cab label is established.

No source established for this field.

Federal observation (NHTSA vPIC)

What the federal corpus observed directly for this exact VIN — independent of, and sometimes more specific than, the prefix-level inference above.

Observed model year
1999

Observed directly for this VIN via NHTSA vPIC.

Observed make
HEIL TRAILER INTERNATIONAL

Observed directly for this VIN via NHTSA vPIC.

Observed model
Heil Trailer International

Observed directly for this VIN via NHTSA vPIC.

Observed body class
Trailer

Observed directly for this VIN via NHTSA vPIC.

Observed vehicle type
TRAILER

Observed directly for this VIN via NHTSA vPIC.

GVWR
Not established

Observed directly for this VIN via NHTSA vPIC.

Not established

  • model line
  • generation
  • cab type

These are withheld claims, not negative findings.

02

Inspection history

Every roadside inspection of this VIN, newest first · Jun 20, 2023 – Oct 23, 2025

DateStateLevelViol.OOSCarrier (DOT)Plate
Oct 23, 2025TXII · Walk-around8SOUTHERN TANK TRANSPORT INC 548304101990PT/SC
Oct 10, 2025TXII · Walk-around3OOSSOUTHERN TANK TRANSPORT INC 548304PV37860/SC
Mar 10, 2025TXII · Walk-around5SOUTHERN TANK TRANSPORT INC 548304101990PT/SC
Sep 2, 2023TXII · Walk-around2SOUTHERN TANK TRANSPORT INC 548304PV37860/SC
Jun 20, 2023TXII · Walk-around8OOSSOUTHERN TANK TRANSPORT INC 548304PV37860/SC
03

Carriers this unit has run under

1 distinct carrier · grouped by DOT · newest activity first

CarrierDOTFirst seenLast seenInsp.State
SOUTHERN TANK TRANSPORT INC548304Jun 20, 2023Oct 23, 20255SC
Names are left-joined from the FMCSA census; a DOT with no census match falls back to its number.
04

Plate & unit-number history

The same truck under different plate registrations across carriers

PlateState / prov.Unit no.CarrierDate rangeInsp.
101990PTSCSOUTHERN TANK TRANSPORT INCMar 10, 2025Oct 23, 20252
PV37860SCSOUTHERN TANK TRANSPORT INCJun 20, 2023Oct 10, 20253
Sources: FMCSA SAFER · L&I · NHTSA vPIC · decoded Jul 5, 2026