The Knob, cataloged under National Stock Number 5355-00-787-7751, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-787-7751 |
| Primary Part Number | 5603-1 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Shank Diameter | 0.500 INCHES NOMINAL IN |
| Inside Width | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Shaft Accommodation Style | SQUARE |
| Overall Thickness | 0.870 INCHES NOMINAL IN |
| Shank Length | 0.688 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Pin Accommodation Type | STRAIGHT PIN TYPE W/O PIN |
| Shank Style | STRAIGHT |
| Gripping Surface Condition | GRIP AID |
| Color | RED |
| Material | ALUMINUM ALLOY |
| Attachment Method | PIN |
| 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 |
|---|---|
| 5603-1 PRIMARY | Mission Systems Orchard Park Inc (USA) |
| Reference | Meaning |
|---|---|
| 5603-1 | 5/9 Secondary reference American Safety Flight Systems Inc |
| 3H90058-105 | 1/2 Source control — Government-approved source U.S. Government activity |
| 5603-1 | 5/9 Secondary reference Conax Florida Corporation |
NSN 5355-00-787-7751 is a Knob, manufactured by Mission Systems Orchard Park Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-787-7751 has 1 manufacturer part number on file: 5603-1 (Mission Systems Orchard Park Inc).
6 possible matches (shared part number, not a government interchangeability claim): 3010-00-969-4696, 5930-01-211-3339, 4240-01-250-9054. Verify interchangeability with system specifications before substitution.
Key specifications for 5603-1: Shank Diameter: 0.500 INCHES NOMINAL IN; Inside Width: 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN; Shaft Accommodation Style: SQUARE; Overall Thickness: 0.870 INCHES NOMINAL IN. 13 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.