The Ring,externally Threaded, cataloged under National Stock Number 5365-01-023-2804, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 19 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-023-2804 |
| Primary Part Number | 856B042279 |
| Item Name | Ring,externally Threaded |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Bore Annular Internal Serration | NOT INCLUDED |
| Beveled Thread | INCLUDED |
| Drive Type | SLOTTED FACE |
| Thread Pitch Diameters | +1.2247 TO 1.2286 INCHES IN |
| Material Document and Classification | ASTM A582 COMP 303 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Location | BOTH ENDS |
| Bore Shape | STRAIGHT |
| Thread Direction | RIGHT-HAND |
| Setscrew Locking Notch | NOT INCLUDED |
| Accommodation Type and Quantity | 2 SLOTS |
| Casehardening Indicator | NOT CASEHARDENED |
| Angle Between Accommodations in Deg | 180.0 |
| Thread Size | 1.250-32 |
| Screw Thread Series Designator | UNS |
| Surface Treatment | PASSIVATE |
| Depth | 0.062 INCHES NOMINAL IN |
| Width | 0.062 INCHES NOMINAL IN |
| Bore Diameter | 0.750 INCHES NOMINAL IN |
| Material | STEEL COMP 303 |
| 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 |
|---|---|
| 042279 | L3 Technologies, Inc. Div L3 Keo (USA) |
| 856B042279 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
NSN 5365-01-023-2804 is a Ring,externally Threaded, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-023-2804 has 2 manufacturer part numbers on file: 042279 (L3 Technologies, Inc. Div L3 Keo), 856B042279 (L3 Technologies, Inc. Div L3 Keo).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-372-7623. Verify interchangeability with system specifications before substitution.
Key specifications for 856B042279: Bore Annular Internal Serration: NOT INCLUDED; Beveled Thread: INCLUDED; Drive Type: SLOTTED FACE; Thread Pitch Diameters: +1.2247 TO 1.2286 INCHES IN. 19 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.