The Knob, cataloged under National Stock Number 5355-01-329-4579, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Hoffman Engineering, Llc Dba Hoffman Engineering Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-329-4579 |
| Primary Part Number | 561-8440 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Hoffman Engineering, Llc Dba Hoffman Engineering Llc |
| Status | ACTIVE |
| Length | 0.750 INCHES NOMINAL IN |
| Style Designator | MUSHROOM |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES SOCKET INTERNAL IN |
| Thread Quantity Per Inch | 20 SOCKET INTERNAL |
| Material | ALUMINUM ALLOY 6061 |
| Thread Series Designator | UNF SOCKET INTERNAL |
| Attachment Method | THREADED HOLES |
| 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 |
|---|---|
| 561-8440 PRIMARY | Hoffman Engineering, Llc Dba Hoffman Engineering Llc (USA) |
| Reference | Meaning |
|---|---|
| 112-9020-100 | 7/2 Vendor item drawing reference Dyncorp International Llc |
| 112-9020-100 | 5/9 Secondary reference Dyncorp Div North American Public Sector |
NSN 5355-01-329-4579 is a Knob, manufactured by Hoffman Engineering, Llc Dba Hoffman Engineering Llc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-329-4579 has 1 manufacturer part number on file: 561-8440 (Hoffman Engineering, Llc Dba Hoffman Engineering Llc).
Key specifications for 561-8440: Length: 0.750 INCHES NOMINAL IN; Style Designator: MUSHROOM; Outside Diameter: 1.250 INCHES NOMINAL IN; Nominal Thread Size: 0.500 INCHES SOCKET INTERNAL IN. 8 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.