The Spacer,ring, cataloged under National Stock Number 5365-01-139-7204, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Union Machine Co of Lynn, Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-139-7204 |
| Primary Part Number | 4055T72P01 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Union Machine Co of Lynn, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE |
| Outside Diameter | 6.2820 INCHES MINIMUM AND 6.2840 INCHES MAXIMUM IN |
| Overall Thickness | 0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Diameter | 5.7105 INCHES MINIMUM AND 5.7115 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM |
| Material | STEEL COMP 630 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 4055T72P01 | Union Machine Co of Lynn, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4055T72P01 | 3/2 Design control — primary reference U.S. Government activity |
| 4055T72P01 | 5/9 Secondary reference U.S. Government activity |
NSN 5365-01-139-7204 is a Spacer,ring, manufactured by Union Machine Co of Lynn, Inc, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-139-7204 has 1 manufacturer part number on file: 4055T72P01 (Union Machine Co of Lynn, Inc).
Key specifications for 4055T72P01: Surface Treatment Document and Classification: AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE; Outside Diameter: 6.2820 INCHES MINIMUM AND 6.2840 INCHES MAXIMUM IN; Overall Thickness: 0.2490 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN; Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE. 7 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.