The Knob, cataloged under National Stock Number 5355-01-087-1994, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Drs Signal Solutions, Inc.. Government technical data includes 18 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-087-1994 |
| Primary Part Number | 25250-1 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Drs Signal Solutions, Inc. |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.369 INCHES NOMINAL IN |
| Shaft Accommodation Style | COUNTERBORED |
| Overall Thickness | 1.025 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Skirt Outside Diameter | 0.680 INCHES MAXIMUM IN |
| Style Designator | ROUND WITH TRIANGULAR FACE |
| Outside Diameter | 0.690 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Counterbore Depth | 0.188 INCHES MINIMUM IN |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Counterbore Diameter | 0.485 INCHES MINIMUM IN |
| Inside Diameter | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Skirt Design | NONDETACHABLE |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 40 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Skirt Style | STEPPED |
| 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 |
|---|---|
| 25250-1 PRIMARY | Drs Signal Solutions, Inc. (USA) |
NSN 5355-01-087-1994 is a Knob, manufactured by Drs Signal Solutions, Inc., classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-087-1994 has 1 manufacturer part number on file: 25250-1 (Drs Signal Solutions, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-649-7088. Verify interchangeability with system specifications before substitution.
Key specifications for 25250-1: Distance From Hole Center to Knob/skirt Base: 0.369 INCHES NOMINAL IN; Shaft Accommodation Style: COUNTERBORED; Overall Thickness: 1.025 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Skirt Outside Diameter: 0.680 INCHES MAXIMUM IN. 18 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.