The Shell,earphone, cataloged under National Stock Number 5965-00-840-3791, is classified within Federal Supply Class 5965 (Headsets, Handsets, Microphones and Speakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is David Clark Co Inc Div David Clark Company, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5965-00-840-3791 |
| Primary Part Number | SP1740B2L |
| Item Name | Shell,earphone |
| FSC / FSG | 5965 / 59 — Headsets, Handsets, Microphones and Speakers |
| Manufacturer | David Clark Co Inc Div David Clark Company, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | PLASTIC; O/A 4.187 IN. LG 3.25 IN. W 2.625 IN. THK; IRREGULAR SHAPE; 2 EA SP-1874 PIVOT STUD LOCATED 1 ON EA SIDE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SP1740B2L PRIMARY | David Clark Co Inc Div David Clark Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SP1740B2L | 5/9 Secondary reference U.S. Government activity |
NSN 5965-00-840-3791 is a Shell,earphone, manufactured by David Clark Co Inc Div David Clark Company, Inc., classified under FSC 5965, Headsets, Handsets, Microphones and Speakers. Status: active.
NSN 5965-00-840-3791 has 1 manufacturer part number on file: SP1740B2L (David Clark Co Inc Div David Clark Company, Inc.).
Key specifications for SP1740B2L: General Characteristics Item Description: PLASTIC; O/A 4.187 IN. LG 3.25 IN. W 2.625 IN. THK; IRREGULAR SHAPE; 2 EA SP-1874 PIVOT STUD LOCATED 1 ON EA SIDE IN. 1 specification is 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.