The Ring,externally Threaded, cataloged under National Stock Number 5365-01-246-4093, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Rc Displays Systems. Government technical data includes 23 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-246-4093 |
| Primary Part Number | 42278-1 |
| Item Name | Ring,externally Threaded |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Rockwell Collins, Inc. Dba Rc Displays Systems |
| Status | ACTIVE |
| Bore Annular Internal Serration | NOT INCLUDED |
| Beveled Thread | NOT INCLUDED |
| Bore Edge Process | ROUNDED |
| Drive Type | SLOTTED FACE |
| End Radius | 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Taper Minor Diameter | 2.972 INCHES MINIMUM AND 2.982 INCHES MAXIMUM IN |
| Taper Major Diameter Location | DRIVE END |
| Material Document and Classification | QQ-A-250/12, T651 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/13, T651 FED SPEC 2ND MATERIAL RESPONSE AND QQ-A-250/13, T651 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-250/18, T651 FED SPEC 2ND MATERIAL RESPONSE AND QQ-A-250/18, T651 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-250/26, T651 FED SPEC 4TH MATERIAL RESPONSE AND QQ-A-250/26, T651 FED SPEC 5TH MATERIAL RESPONSE |
| Process End Location | END OPPOSITE DRIVE END |
| Taper Major Diameter | 3.054 INCHES NOMINAL IN |
| Bore Shape | TAPERED |
| Thread Direction | RIGHT-HAND |
| Setscrew Locking Notch | NOT INCLUDED |
| Accommodation Type and Quantity | 12 SLOTS |
| Casehardening Indicator | NOT CASEHARDENED |
| Angle Between Accommodations in Deg | 30.0 |
| Thread Size | 3.750-32 |
| Screw Thread Series Designator | UNS |
| Surface Treatment | ANODIZE |
| Depth | 0.060 INCHES NOMINAL IN |
| Width | 0.081 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Material | ALUMINUM ALLOY 7075 OR ALUMINUM ALLOY 7075 AND ALUMINUM ALLOY 7072 OR ALUMINUM ALLOY 7075 AND ALUMINUM ALLOY 7011 |
| 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 |
|---|---|
| 42278-1 PRIMARY | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
NSN 5365-01-246-4093 is a Ring,externally Threaded, manufactured by Rockwell Collins, Inc. Dba Rc Displays Systems, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-246-4093 has 1 manufacturer part number on file: 42278-1 (Rockwell Collins, Inc. Dba Rc Displays Systems).
Key specifications for 42278-1: Bore Annular Internal Serration: NOT INCLUDED; Beveled Thread: NOT INCLUDED; Bore Edge Process: ROUNDED; Drive Type: SLOTTED FACE. 23 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.