The Knob, cataloged under National Stock Number 5355-01-199-8239, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Deere & Co. Government technical data includes 17 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 | 5355-01-199-8239 |
| Primary Part Number | AT25440 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Shank Diameter | 0.510 INCHES NOMINAL IN |
| Distance From Hole Center to Knob/skirt Base | 0.190 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.820 INCHES NOMINAL IN |
| Material Transparency | OPAQUE |
| Style Designator | CROWN |
| Outside Diameter | 1.180 INCHES NOMINAL IN |
| Reference Marking | D AND LINE |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.164 INCHES SCREW HOLE IN |
| Inside Diameter | 0.190 INCHES NOMINAL IN |
| Shank Style | CONCAVE |
| Gripping Surface Condition | SMOOTH |
| Shank Radius | 0.430 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | SETSCREWS AND SCREW ON |
| 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 |
|---|---|
| AT25440 PRIMARY | Deere & Co (USA) |
NSN 5355-01-199-8239 is a Knob, manufactured by Deere & Co, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-199-8239 has 1 manufacturer part number on file: AT25440 (Deere & Co).
Key specifications for AT25440: Shank Diameter: 0.510 INCHES NOMINAL IN; Distance From Hole Center to Knob/skirt Base: 0.190 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Overall Thickness: 0.820 INCHES NOMINAL IN. 17 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.