The Knob, cataloged under National Stock Number 5355-01-191-5318, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Avtron Aerospace Inc. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-191-5318 |
| Primary Part Number | A1540T170 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Avtron Aerospace Inc |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.489 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Style Designator | ROUND |
| Outside Diameter | 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN |
| Setscrew Hole Quantity | 2 |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Skirt Design | NONDETACHABLE |
| Material | PLASTIC |
| 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 |
|---|---|
| A1540T170 PRIMARY | Avtron Aerospace Inc (USA) |
NSN 5355-01-191-5318 is a Knob, manufactured by Avtron Aerospace Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-191-5318 has 1 manufacturer part number on file: A1540T170 (Avtron Aerospace Inc).
Key specifications for A1540T170: Distance From Hole Center to Knob/skirt Base: 0.489 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Style Designator: ROUND; Outside Diameter: 1.740 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN. 10 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.