The Roller Unit,rail Type, cataloged under National Stock Number 3990-01-512-8121, is classified within Federal Supply Class 3990 (Miscellaneous Materials Handling Equipment) of the Materials Handling Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3990-01-512-8121 |
| Item Name | Roller Unit,rail Type |
| FSC / FSG | 3990 / 39 — Miscellaneous Materials Handling Equipment |
| Status | ACTIVE |
| Supplementary Features | NEXT HIGHER ASSY - 15852000 |
| Material Document and Classification | ASTM A36 ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL AND STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 15851100 REV E ASSY 2 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
| 15851100 REV E ASSY 2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3990-01-512-8121 is a Roller Unit,rail Type, classified under FSC 3990, Miscellaneous Materials Handling Equipment. Status: active.
Key specifications for 3990-01-512-8121: Overall Height: 10.000 INCHES NOMINAL IN; Supplementary Features: NEXT HIGHER ASSY - 15852000; Material Document and Classification: ASTM A36 ASSN STD SINGLE MATERIAL RESPONSE; Overall Length: 94.000 INCHES NOMINAL IN. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.