The Knob, cataloged under National Stock Number 5355-01-357-7053, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Electronic Hardware Corp Dba Electronic Hardware Corp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-357-7053 |
| Primary Part Number | SA51A2MA/WB/11-24/SMA |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Electronic Hardware Corp Dba Electronic Hardware Corp |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.158 INCHES NOMINAL IN |
| Knob Portion Diameter | 0.419 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.763 INCHES MINIMUM AND 0.823 INCHES MAXIMUM IN |
| Style Designator | ROUND CONCENTRIC |
| Outside Diameter | 0.490 INCHES MINIMUM AND 0.540 INCHES MAXIMUM IN |
| Reference Marking | DOT |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Inside Diameter | 0.127 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Color | BLACK, LUSTERLESS |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 40 SCREW HOLE |
| Material | PLASTIC |
| 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 |
|---|---|
| SA51A2MA/WB/11-24/SMA PRIMARY | Electronic Hardware Corp Dba Electronic Hardware Corp (USA) |
| Reference | Meaning |
|---|---|
| PMS91528-002-02 | 5/9 Secondary reference Program Manager Advanced Attack Helicopter Barcom Amcpm-Aah |
| SA51A2MA | 5/9 Secondary reference U.S. Government activity |
| PMS91528-002-02 | 5/9 Secondary reference Lockheed Martin Corporation |
NSN 5355-01-357-7053 is a Knob, manufactured by Electronic Hardware Corp Dba Electronic Hardware Corp, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-357-7053 has 1 manufacturer part number on file: SA51A2MA/WB/11-24/SMA (Electronic Hardware Corp Dba Electronic Hardware Corp).
Key specifications for SA51A2MA/WB/11-24/SMA: Distance From Hole Center to Knob/skirt Base: 0.158 INCHES NOMINAL IN; Knob Portion Diameter: 0.419 INCHES MINIMUM AND 0.479 INCHES MAXIMUM IN; Shaft Accommodation Style: ROUND; Overall Thickness: 0.763 INCHES MINIMUM AND 0.823 INCHES MAXIMUM 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.