The Knob, cataloged under National Stock Number 5355-01-055-6957, 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 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-055-6957 |
| Primary Part Number | 1WW2B |
| 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 | 0.369 INCHES MAXIMUM IN |
| Shaft Accommodation Style | COUNTERBORED |
| Length | 1.020 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN |
| Overall Thickness | 0.752 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Skirt Outside Diameter | 1.000 INCHES MAXIMUM IN |
| Material Transparency | OPAQUE |
| Style Designator | POINTER |
| Counterbore Depth | 0.188 INCHES MINIMUM IN |
| Reference Marking | INDICATOR LINE |
| 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 |
| Pointer Design | NONDETACHABLE |
| Gripping Surface Condition | GRIP AID |
| Skirt Design | NONDETACHABLE |
| Width | 0.690 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 1WW2B | Electronic Hardware Corp Dba Electronic Hardware Corp (USA) |
| 507-5PL-2M | Lerco Div Space-Lok Inc (USA) |
| Reference | Meaning |
|---|---|
| KMS7K W/PHOSPHORESCENT LINE 2L | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| KMS7K W/PHOSPHORESCENT LINE 2L | 5/9 Secondary reference Dar Electronics Inc Dba National Radio Co |
| NASM3926 | 3/1 Design control — primary reference U.S. Government activity |
| MS91528-1WW2B | 3/2 Design control — primary reference U.S. Government activity |
| KMS7K W/PHOSPHORESCENT LINE 2L | 5/9 Secondary reference U.S. Government activity |
| MS91528-1WW2B | 5/9 Secondary reference U.S. Government activity |
NSN 5355-01-055-6957 is a Knob, manufactured by Electronic Hardware Corp Dba Electronic Hardware Corp, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-055-6957 has 2 manufacturer part numbers on file: 1WW2B (Electronic Hardware Corp Dba Electronic Hardware Corp), 507-5PL-2M (Lerco Div Space-Lok Inc).
Key specifications for 1WW2B: Distance From Hole Center to Knob/skirt Base: 0.369 INCHES MAXIMUM IN; Shaft Accommodation Style: COUNTERBORED; Length: 1.020 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN; Overall Thickness: 0.752 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN. 22 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.