The Knob, cataloged under National Stock Number 5355-01-373-5489, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Selco Products Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5355-01-373-5489 |
| Primary Part Number | SB211-250BLACK |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Selco Products Inc |
| Status | ACTIVE |
| Overall Thickness | 0.670 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Outside Diameter | 1.100 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES SCREW HOLE IN |
| Gripping Surface Condition | GRIP AID |
| Color | BLACK |
| Attachment Method | NUT |
| 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 |
|---|---|
| SB211-250BLACK PRIMARY | Selco Products Inc (USA) |
| SB211-250-21MM PRIMARY | Selco Products Inc (USA) |
| SB211-250-21MM | Sel Sales Inc (USA) |
| Reference | Meaning |
|---|---|
| 4-10047 | 5/9 Secondary reference Data Check Dba Lavi Systems, Inc. Div Data Check |
NSN 5355-01-373-5489 is a Knob, manufactured by Selco Products Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-373-5489 has 3 manufacturer part numbers on file: SB211-250BLACK (Selco Products Inc), SB211-250-21MM (Selco Products Inc), SB211-250-21MM (Sel Sales Inc).
Key specifications for SB211-250BLACK: Overall Thickness: 0.670 INCHES NOMINAL IN; Style Designator: ROUND; Outside Diameter: 1.100 INCHES NOMINAL IN; Nominal Thread Size: 0.250 INCHES SCREW HOLE IN. 7 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.