The Nut,plain,blind Rivet, cataloged under National Stock Number 5310-01-693-4591, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ramnut of Ramco Dba Ramnut. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-693-4591 |
| Primary Part Number | RS31B556CSI |
| Item Name | Nut,plain,blind Rivet |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ramnut of Ramco Dba Ramnut |
| Status | ACTIVE |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| RS31B556CSI PRIMARY | Ramnut of Ramco Dba Ramnut (USA) |
| S31B566CSI PRIMARY | Bollhoff Inc. Dba Bollhoff Rivnut Inc (USA) |
| Reference | Meaning |
|---|---|
| 13598940 | D/9 Drawing number reference only Us Army Aviation and Missile Command |
| NAS1330H5EB556 | 3/2 Design control — primary reference U.S. Government activity |
| 13598940-82 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
NSN 5310-01-693-4591 is a Nut,plain,blind Rivet, manufactured by Ramnut of Ramco Dba Ramnut, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-693-4591 has 2 manufacturer part numbers on file: RS31B556CSI (Ramnut of Ramco Dba Ramnut), S31B566CSI (Bollhoff Inc. Dba Bollhoff Rivnut Inc).
Key specifications for RS31B556CSI: Special Features: KEYLESS CLOSED END; Surface Treatment: CADMIUM OVERALL; Part Name Assigned by Controlling Agency: NUT, BLIND RIVET COUNTERSUNK; End Item Identification: 1440-01-586-9261. 2 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.