The Knob, cataloged under National Stock Number 5355-01-628-3550, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Exotic Rubber & Plastics Corp Dba Exotic Rubber & Plastics, Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5355-01-628-3550 |
| Primary Part Number | 12273391 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Exotic Rubber & Plastics Corp Dba Exotic Rubber & Plastics, Corp |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.484 INCHES NOMINAL IN |
| Overall Thickness | 0.997 INCHES MINIMUM AND 1.057 INCHES MAXIMUM IN |
| Style Designator | ACORN (DOME) |
| Outside Diameter | 0.901 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN |
| Reference Marking | PUSH TO TURN |
| Nominal Thread Size | 0.112 INCHES SETSCREW IN |
| Color | BLACK OR BLACK, LUSTERLESS |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 40 SETSCREW |
| Material | PLASTIC |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SETSCREW |
| 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 |
|---|---|
| 12273391 PRIMARY | Exotic Rubber & Plastics Corp Dba Exotic Rubber & Plastics, Corp (USA) |
| 12273391 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| I1B4MA/#UR | 3/2 Design control — primary reference U.S. Government activity |
NSN 5355-01-628-3550 is a Knob, manufactured by Exotic Rubber & Plastics Corp Dba Exotic Rubber & Plastics, Corp, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-628-3550 has 2 manufacturer part numbers on file: 12273391 (Exotic Rubber & Plastics Corp Dba Exotic Rubber & Plastics, Corp), 12273391 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12273391: Distance From Hole Center to Knob/skirt Base: 0.484 INCHES NOMINAL IN; Overall Thickness: 0.997 INCHES MINIMUM AND 1.057 INCHES MAXIMUM IN; Style Designator: ACORN (DOME); Outside Diameter: 0.901 INCHES MINIMUM AND 0.941 INCHES MAXIMUM 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.