The Knob, cataloged under National Stock Number 5355-00-166-8770, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-166-8770 |
| Primary Part Number | 8509388-502 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.120 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.620 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Outside Diameter | 0.375 INCHES NOMINAL IN |
| Reference Marking | DOT AND LINE |
| Setscrew Hole Quantity | 1 |
| Nominal Thread Size | 0.138 INCHES SCREW HOLE IN |
| Inside Diameter | 0.1275 INCHES MINIMUM AND 0.1285 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Screw Drive Type | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 8509388-502 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA) |
| Reference | Meaning |
|---|---|
| 8509388-502 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5355-00-166-8770 is a Knob, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-166-8770 has 1 manufacturer part number on file: 8509388-502 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).
Key specifications for 8509388-502: Distance From Hole Center to Knob/skirt Base: 0.120 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Overall Thickness: 0.620 INCHES NOMINAL IN; Style Designator: ROUND. 15 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.