The Knob, cataloged under National Stock Number 5355-01-503-6557, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Chromalox Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5355-01-503-6557 |
| Primary Part Number | 169-045090-001 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Chromalox Inc |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.312 INCHES NOMINAL IN |
| Overall Thickness | 0.750 INCHES NOMINAL IN |
| Style Designator | SKIRTED ROUND WITH WINDOW |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.164 INCHES SCREW HOLE IN |
| Gripping Surface Condition | GRIP AID |
| Screw Drive Type | SLOT |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Material | PLASTIC PHENOLIC |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | SETSCREWS |
| 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 |
|---|---|
| 169-045090-001 PRIMARY | Chromalox Inc (USA) |
| 004-118253-000 REV 18 ITEM 37 | Chromalox Inc (USA) |
| Reference | Meaning |
|---|---|
| A169-045090-000 | D/9 Drawing number reference only Chromalox Inc |
NSN 5355-01-503-6557 is a Knob, manufactured by Chromalox Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-503-6557 has 2 manufacturer part numbers on file: 169-045090-001 (Chromalox Inc), 004-118253-000 REV 18 ITEM 37 (Chromalox Inc).
Key specifications for 169-045090-001: Distance From Hole Center to Knob/skirt Base: 0.312 INCHES NOMINAL IN; Overall Thickness: 0.750 INCHES NOMINAL IN; Style Designator: SKIRTED ROUND WITH WINDOW; Outside Diameter: 1.750 INCHES NOMINAL IN. 12 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.