The Mask,dial, cataloged under National Stock Number 5355-00-254-9829, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Astronautics Corporation of America. Government technical data includes 9 specifications, 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-254-9829 |
| Primary Part Number | 104178 |
| Item Name | Mask,dial |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Style Designator | SLOTTED |
| Mounting Hole Diameter | 0.086 INCHES NOMINAL IN |
| Outside Diameter | 2.106 INCHES NOMINAL IN |
| Material Thickness | 0.012 INCHES NOMINAL IN |
| Color | BLACK MASK |
| Surface Treatment | ENAMEL MASK |
| Material | COPPER ALLOY MASK |
| Attachment Method | HOLE |
| 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 |
|---|---|
| 104178 PRIMARY | Astronautics Corporation of America (USA) |
NSN 5355-00-254-9829 is a Mask,dial, manufactured by Astronautics Corporation of America, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-254-9829 has 1 manufacturer part number on file: 104178 (Astronautics Corporation of America).
3 possible matches (shared part number, not a government interchangeability claim): 5950-00-645-7871, 5985-01-129-7691, 2540-01-337-2107. Verify interchangeability with system specifications before substitution.
Key specifications for 104178: Mounting Hole Quantity: 4; Style Designator: SLOTTED; Mounting Hole Diameter: 0.086 INCHES NOMINAL IN; Outside Diameter: 2.106 INCHES NOMINAL IN. 9 specifications are 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.