The Knob, cataloged under National Stock Number 5355-01-417-1818, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-417-1818 |
| Primary Part Number | 903-5912051PC20 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 1.375 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.875 INCHES NOMINAL IN |
| Style Designator | DECAGON |
| Nominal Thread Size | 0.750 INCHES SCREW HOLE IN |
| Inside Diameter | 0.750 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Material | STEEL |
| Thread Series Designator | UNS SCREW HOLE |
| Attachment Method | SCREW ON |
| 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 |
|---|---|
| 903-5912051PC20 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 903-5912051 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5355-01-417-1818 is a Knob, manufactured by Naval Sea Systems Command, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-417-1818 has 1 manufacturer part number on file: 903-5912051PC20 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-442-8582. Verify interchangeability with system specifications before substitution.
Key specifications for 903-5912051PC20: Width Across Flats: 1.375 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Overall Thickness: 0.875 INCHES NOMINAL IN; Style Designator: DECAGON. 10 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.