The Restraint,mast Rotation, cataloged under National Stock Number 3990-01-414-7283, is classified within Federal Supply Class 3990 (Miscellaneous Materials Handling Equipment) of the Materials Handling Equipment group. The manufacturer of record is Stanley Black & Decker, Inc. Dba Stanley Vidmar. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3990-01-414-7283 |
| Primary Part Number | 2KMRR2 |
| Item Name | Restraint,mast Rotation |
| FSC / FSG | 3990 / 39 — Miscellaneous Materials Handling Equipment |
| Manufacturer | Stanley Black & Decker, Inc. Dba Stanley Vidmar |
| Status | ACTIVE |
| Surface Treatment | PAINT |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2KMRR2 | Stanley Black & Decker, Inc. Dba Stanley Vidmar (USA) |
| Reference | Meaning |
|---|---|
| MRR-1 | 3/9 Design control — primary reference Stanley Black & Decker, Inc. Dba Stanley Vidmar |
| MAST ROTATION RESTRAINT | 5/9 Secondary reference Stanley Black & Decker, Inc. Dba Stanley Vidmar |
| NEW PRODUCT | D/9 Drawing number reference only Dla Aviation Engineering Div Department of Defense |
NSN 3990-01-414-7283 is a Restraint,mast Rotation, manufactured by Stanley Black & Decker, Inc. Dba Stanley Vidmar, classified under FSC 3990, Miscellaneous Materials Handling Equipment. Status: active.
NSN 3990-01-414-7283 has 1 manufacturer part number on file: 2KMRR2 (Stanley Black & Decker, Inc. Dba Stanley Vidmar).
Key specifications for 2KMRR2: Special Features: AUTOMATICALLY POSITIONS THE MAST AT 90 DEG INTERVALS (PARALLEL AND PERPENDICULAR TO THE AISLE); CAN BE DISENGAGED TO PROVIDE 360 DEG CONTINUOUS ROTATION; Surface Treatment: PAINT; Material: STEEL. 2 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.