The Ring,retaining, cataloged under National Stock Number 5325-01-116-8053, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Perkins Engines 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-116-8053 |
| Primary Part Number | 2721124 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.111 INCHES MINIMUM AND 1.117 INCHES MAXIMUM IN |
| Major Thickness | 0.045 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Material | STEEL |
| 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 |
|---|---|
| 2721124 PRIMARY | Perkins Engines Inc (USA) |
| Reference | Meaning |
|---|---|
| 2721-124 | 5/9 Secondary reference Perkins Engines Inc |
| 19984 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-01-116-8053 is a Ring,retaining, manufactured by Perkins Engines Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-116-8053 has 1 manufacturer part number on file: 2721124 (Perkins Engines Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5340-01-145-7862, 5330-01-516-9398, 4130-01-673-6014. Verify interchangeability with system specifications before substitution.
Key specifications for 2721124: Usage Design: INTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 1.111 INCHES MINIMUM AND 1.117 INCHES MAXIMUM IN; Major Thickness: 0.045 INCHES MINIMUM AND 0.049 INCHES MAXIMUM IN. 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.