The Knob, cataloged under National Stock Number 5355-00-559-8943, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Safetran Systems Co Sub of Cci Corp. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 17 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 33 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5355-00-559-8943 |
| Primary Part Number | 128-128 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Safetran Systems Co Sub of Cci Corp |
| Status | CANCELLED |
| Distance From Hole Center to Knob/skirt Base | 0.484 INCHES MAXIMUM IN |
| Shaft Accommodation Style | COUNTERBORED |
| Length | 1.325 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN |
| Overall Thickness | 0.980 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN |
| Skirt Outside Diameter | 1.345 INCHES MAXIMUM IN |
| Material Transparency | OPAQUE |
| Style Designator | POINTER |
| Counterbore Depth | 0.320 INCHES MINIMUM IN |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.164 INCHES SCREW HOLE IN |
| Counterbore Diameter | 0.640 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 | 0.890 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Skirt Style | STEPPED |
| Attachment Method | SETSCREWS |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 90-5-2GK | Raytheon Company (USA) |
| 128-128 PRIMARY | Safetran Systems Co Sub of Cci Corp (USA) |
| 7901762-008 | General Motors Corp (USA) |
| 509-5-2M | Lerco Div Space-Lok Inc (USA) |
| 1040183 PRIMARY | Us Army Aviation and Missile Command (USA) |
| HS7495-545 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| 90-5-2G | Raytheon Company Div Corp (USA) |
| 92B4MA | Electronic Hardware Corp Dba Electronic Hardware Corp (USA) |
| 231-1058G6 | Raytheon Company Div Corp (USA) |
| 855112 | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 855112 | Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA) |
| G243109-2 | Raytheon Company (USA) |
| G243109-2 | Raytheon Company Dba Raytheon Co (USA) |
| 90-5-2G | Drs Technologies Canada Ltd (CAN) |
| 2K2B | Electronic Hardware Corp Dba Electronic Hardware Corp (USA) |
| 90-5-2GK | Raytheon Company Dba Raytheon Co (USA) |
| 3094G6 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| 90-5-2G | 5/9 Secondary reference Raytheon Co Raytheon Systems Co |
| G243109-2 | 5/9 Secondary reference At and T Corp |
| 17-420-00-015 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| HS91528-2K2B | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 950006-15 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 2K2K | 5/9 Secondary reference Electronic Hardware Corp Dba Electronic Hardware Corp |
| 05G00022-0015 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS91528-2K2D | 5/9 Secondary reference U.S. Government activity |
| KMS9K2LNR | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| 9L2PS | 5/9 Secondary reference Electronic Hardware Corp Dba Electronic Hardware Corp |
| 2K2D | 5/9 Secondary reference Electronic Hardware Corp Dba Electronic Hardware Corp |
| 88-20021-1 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
| SMC208911-4 | 5/2 Secondary reference U.S. Government activity |
| 115936-027 | 5/2 Secondary reference U.S. Government activity |
| 9K2LBLACK | 5/9 Secondary reference Dar Electronics Inc Commercial Products Div Dba National Radio Co |
| 2055473 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| KMS9K2LNR | 5/9 Secondary reference Dar Electronics Inc Dba National Radio Co |
| 20431-1 | 5/9 Secondary reference U.S. Government activity |
| 1658441PC1 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 3094G6 | 5/2 Secondary reference U.S. Government activity |
NSN 5355-00-559-8943 is a Knob, manufactured by Safetran Systems Co Sub of Cci Corp, classified under FSC 5355, Knobs and Pointers. Status: cancelled.
NSN 5355-00-559-8943 has 17 manufacturer part numbers on file: 90-5-2GK (Raytheon Company), 128-128 (Safetran Systems Co Sub of Cci Corp), 7901762-008 (General Motors Corp), 509-5-2M (Lerco Div Space-Lok Inc), 1040183 (Us Army Aviation and Missile Command) and 12 more.
3 possible matches (shared part number, not a government interchangeability claim): 5307-01-437-0048, 2010-01-602-9870, 5315-01-680-3066. Verify interchangeability with system specifications before substitution.
Key specifications for 128-128: Distance From Hole Center to Knob/skirt Base: 0.484 INCHES MAXIMUM IN; Shaft Accommodation Style: COUNTERBORED; Length: 1.325 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN; Overall Thickness: 0.980 INCHES MINIMUM AND 1.040 INCHES MAXIMUM IN. 21 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.
NSN 5355-00-559-8943 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.