The Protector,hearing, cataloged under National Stock Number 4240-01-535-7707, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety 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3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4240-01-535-7707 |
| Item Name | Protector,hearing |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Status | ACTIVE |
| Headband Type | FIXED SINGLE BAND |
| Material | PLASTIC HEADBAND |
| Furnished Items | EAR CUSHION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3M1430 | 5/9 Secondary reference 3m Company |
| 7000104070 | C/1 Advisory reference — outside the item-of-supply concept 3m Company |
| 3M1430 | 3/9 Design control — primary reference 3m Healthcare Service Center |
NSN 4240-01-535-7707 is a Protector,hearing, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
Key specifications for 4240-01-535-7707: Headband Type: FIXED SINGLE BAND; Special Features: X-TRA WIDE HEADBAND; LOW HEADBAND PRESSURE; LIGHTWEIGHT; LARGE INNER EAR CUP SPACE; SOFT HEAD STRAP; Material: PLASTIC HEADBAND; Furnished Items: EAR CUSHION. 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.