The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-641-7630, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-641-7630 |
| Primary Part Number | 1.000-8UNC-2B NICUD4 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZX |
| Departure From Cited Designator | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| 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 |
|---|---|
| 1.000-8UNC-2B NICUD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| MIL-DTL-1222 1.00-8UNC-2BD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 122-5486623 ITEM 026D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 1.000-8UNC-2B NICU | 5/1 Secondary reference Naval Sea Systems Command |
| MIL-DTL-1222 1.00-8UNC-2B | 4/1 Identification reference U.S. Government activity |
| 122-5486623 ITEM 026 | 3/1 Design control — primary reference Naval Sea Systems Command |
NSN 5310-01-641-7630 is a Nut,plain,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-641-7630 has 3 manufacturer part numbers on file: 1.000-8UNC-2B NICUD4 (Naval Inventory Control Point Mechanicsburg), MIL-DTL-1222 1.00-8UNC-2BD4 (Naval Inventory Control Point Mechanicsburg), 122-5486623 ITEM 026D4 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 1.000-8UNC-2B NICUD4: Criticality Code Justification: ZZZX; Departure From Cited Designator: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 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.