The Diaphragm,speaking, cataloged under National Stock Number 4240-01-177-5489, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Mine Safety Appliances Company. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-177-5489 |
| Primary Part Number | 83635 |
| Item Name | Diaphragm,speaking |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 5965PL1324167 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| 83635 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 4240-01-177-5489 is a Diaphragm,speaking, manufactured by Mine Safety Appliances Company, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-177-5489 has 2 cross-referenced part numbers: 5965PL1324167 (Jednolity Indeks Materialowy - Uniform Material Index), 83635 (Mine Safety Appliances Company).
There are 2 known substitutes for 4240-01-177-5489: 5930-00-438-6440, 5925-00-482-8704. Verify interchangeability with system specifications before substitution.
Key specifications for 83635: Special Features: SOLE SOURCE REQUIRED BY STATUTE 6.302; End Item Identification: ULTRA-TWIN RESPIRATOR, MINE SAFETY APPLIANCES, COMPANY. 2 total characteristics are documented in the Federal Logistics Information System.