The Nut,plain,barrel, cataloged under National Stock Number 5310-01-210-8780, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Wesco Aircraft Hardware Corp. Dba Incora. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-210-8780 |
| Primary Part Number | 521890-1 |
| Item Name | Nut,plain,barrel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Wesco Aircraft Hardware Corp. Dba Incora |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 521890-1 | Wesco Aircraft Hardware Corp. Dba Incora (USA) |
| 521890-1 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 521890-1 | Qualified Fasteners Inc (USA) |
| 521890-1 | Ingram Industries, Inc. Dba Ingram Industries Inc Div Coloc Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 521890-1 | 5/9 Secondary reference Southern Fastener Llc Dba Southern Fastener |
| 521890-1 | 5/9 Secondary reference Bristol Industries, Llc |
| 521890-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-210-8780 is a Nut,plain,barrel, manufactured by Wesco Aircraft Hardware Corp. Dba Incora, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-210-8780 has 4 manufacturer part numbers on file: 521890-1 (Wesco Aircraft Hardware Corp. Dba Incora), 521890-1 (Sps Technologies, Llc Dba PB Fasteners), 521890-1 (Qualified Fasteners Inc), 521890-1 (Ingram Industries, Inc. Dba Ingram Industries Inc Div Coloc Manufacturing).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-362-8248. Verify interchangeability with system specifications before substitution.
Key specifications for 521890-1: Criticality Code Justification: FEAT; Special Features: ITEMS ARE BEING CODED AS CRITICAL TO INSURE SOURCE INSPECTION WILL BE PERFORMED AT THE POINT OF MANUFACTURE, PRIOR TO MATERIAL RECEIPT BY THE US NAVY OR OTHER DOD COMPONENTS. THESE ITEMS ARE PIECE PARTS OR END ITEMS IN SUPPORT OF VITAL MILITARY HARDWARE NECESSARY TO SUSTAIN THE SUCCESSFUL MISSION OF THE SHIPS, SUBMARINES, AND SHORE STATIONS OF THE US NAVY. CRITICAL FEATURES INCLUDING, BUT NOT LIMITED TO, DIMENSIONS, TOLERANCES/CLEARANCES, ELECTRONIC CHARACTERISTICS, AND METALLURGICAL PROPERTIES WILL BESPECIFIED FOR GOVERNMENT Q AR (QUALITY ASSURANCE REPRESENTATIVES) TO INSURE THE HIGHEST POSSIBLE DEGREE OF QUALITY AND RELIABILITY OF THESE PARTS BEING DELIVERED UNDER NAVICP CONTRACTS. 1 specification is 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.