The Nut Assembly,retainer Ring, cataloged under National Stock Number 5310-00-221-3091, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-221-3091 |
| Primary Part Number | LH7601 |
| Item Name | Nut Assembly,retainer Ring |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| LH7601 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 5310PL0959531 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 02108-11010338 | C/1 Advisory reference — outside the item-of-supply concept Spiral Tool Corporation Dba Stc Industries |
| 11010338 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| 65101-1018 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies, Llc Dba PB Fasteners |
| 11010338 | 5/2 Secondary reference U.S. Government activity |
| 11010338 | 5/9 Secondary reference Springfield Armory |
| LH7601 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-221-3091 is a Nut Assembly,retainer Ring, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-221-3091 has 1 manufacturer part number on file: LH7601 (Esna, Llc).
Key specifications for LH7601: Part Name Assigned by Controlling Agency: NUT ASSEMBLY, SELF-LOCKING; End Item Identification: 20MM, M61A1, M61, XM130 GUNS MM. 0 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.