The Nut,plain,blind Rivet, cataloged under National Stock Number 5310-00-340-4566, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Urania Engineering Co., Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-340-4566 |
| Primary Part Number | FB02520SS320 |
| Item Name | Nut,plain,blind Rivet |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Urania Engineering Co., Inc. |
| Status | ACTIVE |
| Head Height | 0.058 INCHES NOMINAL IN |
| Nut Length | 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Shank End Type | CLOSED |
| Head Style | FLAT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nut Diameter | 0.328 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | BLIND RIVET W/SMOOTH ROUND SHANK |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Head Diameter | 0.460 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| 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 |
|---|---|
| FB02520SS320 PRIMARY | Urania Engineering Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| SS25B320 | 5/9 Secondary reference Bfgoodrich Co the Aerospace Div Engineered Polymer Products |
| SC-D-681076-46 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-00-340-4566 is a Nut,plain,blind Rivet, manufactured by Urania Engineering Co., Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-340-4566 has 1 manufacturer part number on file: FB02520SS320 (Urania Engineering Co., Inc.).
Key specifications for FB02520SS320: Head Height: 0.058 INCHES NOMINAL IN; Nut Length: 1.172 INCHES MINIMUM AND 1.202 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC). 16 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.