The Ring,externally Threaded, cataloged under National Stock Number 5365-00-222-2001, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-222-2001 |
| Primary Part Number | 657443 |
| Item Name | Ring,externally Threaded |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Bore Annular Internal Serration | NOT INCLUDED |
| Material Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Beveled Thread | NOT INCLUDED |
| Chamfer Length | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PS102-1 FSCM K0654 MFR REF SINGLE TREATMENT RESPONSE |
| Bore Edge Process | CHAMFERED |
| Drive Type | SLOTTED FACE |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 6323 ASSN STD SINGLE MATERIAL RESPONSE |
| Process End Location | DRIVE END |
| Bore Shape | STRAIGHT |
| Thread Direction | RIGHT-HAND |
| Setscrew Locking Notch | NOT INCLUDED |
| Accommodation Type and Quantity | 24 SLOTS |
| Casehardening Indicator | NOT CASEHARDENED |
| Angle Between Accommodations in Deg | 15.0 |
| Thread Size | 4.020-16 |
| Screw Thread Series Designator | UNJS |
| Surface Treatment | SILVER |
| Chamfer Angle in Deg | 45.0 |
| Depth | 0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Width | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Bore Diameter | 3.640 INCHES MINIMUM AND 3.680 INCHES MAXIMUM IN |
| Material | STEEL COMP 8740 |
| 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 |
|---|---|
| 657443 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 657443 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 657443 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5365-00-222-2001 is a Ring,externally Threaded, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-222-2001 has 2 manufacturer part numbers on file: 657443 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 657443 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 657443: Bore Annular Internal Serration: NOT INCLUDED; Material Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Beveled Thread: NOT INCLUDED; Chamfer Length: 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN. 24 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.