The Visor Lock,helmet, cataloged under National Stock Number 8475-01-421-2359, is classified within Federal Supply Class 8475 (Specialized Flight Clothing and Accessories) of the Clothing, Individual Equipment, and Insignia group. The manufacturer of record is Telegi Srl. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 8475-01-421-2359 |
| Primary Part Number | 5387.4B-2857/1 |
| Item Name | Visor Lock,helmet |
| FSC / FSG | 8475 / 84 — Specialized Flight Clothing and Accessories |
| Manufacturer | Telegi Srl |
| Status | ACTIVE |
| Knob Type | FOUR-FINGER GRIP |
| 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 |
|---|---|
| 5387.4B-2857/1 | Telegi Srl (ITA) |
| Reference | Meaning |
|---|---|
| 74A2857-1 | 3/2 Design control — primary reference U.S. Government activity |
| 74A2857-1 | 5/9 Secondary reference Bhv Aviation Consultants Gmbh |
| 74A2857-1 | 5/9 Secondary reference Gentex Corp |
NSN 8475-01-421-2359 is a Visor Lock,helmet, manufactured by Telegi Srl, classified under FSC 8475, Specialized Flight Clothing and Accessories. Status: active.
NSN 8475-01-421-2359 has 1 manufacturer part number on file: 5387.4B-2857/1 (Telegi Srl).
Key specifications for 5387.4B-2857/1: Knob Type: FOUR-FINGER GRIP. 1 specification is 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.