The Knob, cataloged under National Stock Number 5355-01-121-5575, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Triman Industries Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-121-5575 |
| Primary Part Number | TT375-101 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Triman Industries Inc |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.250 INCHES NOMINAL IN |
| Inside Width | 0.107 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN |
| Shaft Accommodation Style | FLATTED ONE SIDE |
| Overall Thickness | 0.560 INCHES NOMINAL IN |
| Style Designator | ROUND WITH BAR FACE |
| Outside Diameter | 0.620 INCHES NOMINAL IN |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Inside Diameter | 0.127 INCHES MINIMUM AND 0.129 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 40 SCREW HOLE |
| 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 |
|---|---|
| TT375-101 | Triman Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 5055191-3 | 7/9 Vendor item drawing reference Sci Systems Inc |
| 5055191-003 | 7/2 Vendor item drawing reference Sci Technology, Inc |
| TT375-101 | 5/9 Secondary reference Dupree Inc Aerospace Knob Co Div |
| TT375-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5355-01-121-5575 is a Knob, manufactured by Triman Industries Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-121-5575 has 1 manufacturer part number on file: TT375-101 (Triman Industries Inc).
Key specifications for TT375-101: Distance From Hole Center to Knob/skirt Base: 0.250 INCHES NOMINAL IN; Inside Width: 0.107 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN; Shaft Accommodation Style: FLATTED ONE SIDE; Overall Thickness: 0.560 INCHES NOMINAL IN. 14 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.