The Screw,expansion,dental, cataloged under National Stock Number 6520-01-396-4000, is classified within Federal Supply Class 6520 (Dental Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6520-01-396-4000 |
| Item Name | Screw,expansion,dental |
| FSC / FSG | 6520 / 65 — Dental Instruments, Equipment, and Supplies |
| Status | ACTIVE |
| Usage Design | ORTHODONTIST PROCEDURES |
| Material | STEEL CORROSION RESISTING |
| Furnished Items and Quantity | SCREW BODY 1; SHORT JACK SCREW 1; LONG JACK SCREW 1; .051 IN. ROUND, ANGULATED STAINLESS STEEL ANCHOR LEGS 4; SAFETY ADJUSTMENT KEY 1 IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Reference | Meaning |
|---|---|
| TWO-STAGE EXPANSION SCREW | 5/1 Secondary reference U.S. Government activity |
| 94-7-15-63 DE | 5/1 Secondary reference U.S. Government activity |
| 440-160 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6520-01-396-4000 is a Screw,expansion,dental, classified under FSC 6520, Dental Instruments, Equipment, and Supplies. Status: active.
Key specifications for 6520-01-396-4000: Usage Design: ORTHODONTIST PROCEDURES; Overall Width: 14.0 MILLIMETERS NOMINAL MM; Special Features: TWO-STAGE EXPANSION SCREW; USED TO ACCOMPLISH PALATAL EXPANSION UP TO 14 MM; FIRST STAGE FOR A NARROW MAXILLARY ARCH, EXPANDS UP TO 7 MM; REPLACEABLE JACK SCREW FOR SECOND STAGE EXPANSION, WIDENS ARCH ANOTHER 7 MM MM; Part Name Assigned by Controlling Agency: SCREW EXPANSION DEN CRS ORTHODONTIST 14MM W NO GUARD SPRING MM. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.