The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-245-0723, 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 8 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-245-0723 |
| Primary Part Number | QQ-N-281 CL B-CD OR HFL1 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-N-281,CLASS B-CD FED SPEC 1ST MATERIAL RESPONSE OR QQ-N-281,CLASS B-HF FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.620 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 11 |
| Material | NICKEL ALLOY R-405 OVERALL |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| 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 |
|---|---|
| QQ-N-281 CL B-CD OR HFL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Y-062B179DX1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| PL-11156-F-18 ITEM 179BL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| TYP 111 GR 4000R405STYAL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 10447-C-18L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 11156-H-18 ITEM179BL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 10447-C-18 | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 11156-H-18 ITEM179B | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 10447-C-18 | 5/9 Secondary reference U.S. Government activity |
| Y-062B179DX1 | 3/1 Design control — primary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| QQ-N-281 CL B-CD OR HF | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| PL-11156-F-18 ITEM 179B | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Y-062B179DX1 | 5/9 Secondary reference U.S. Government activity |
| PL-11156-F-18 ITEM 179B | 5/9 Secondary reference U.S. Government activity |
| TYP 111 GR 4000R405STYA | 5/1 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 11156-H-18 ITEM179B | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-245-0723 is a Nut,plain,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-245-0723 has 6 manufacturer part numbers on file: QQ-N-281 CL B-CD OR HFL1 (Naval Inventory Control Point Mechanicsburg), Y-062B179DX1L1 (Naval Inventory Control Point Mechanicsburg), PL-11156-F-18 ITEM 179BL1 (Naval Inventory Control Point Mechanicsburg), TYP 111 GR 4000R405STYAL1 (Naval Inventory Control Point Mechanicsburg), 10447-C-18L1 (Naval Inventory Control Point Mechanicsburg) and 1 more.
Key specifications for QQ-N-281 CL B-CD OR HFL1: Thread Series: UNIFIED NATIONAL COARSE (UNC); Criticality Code Justification: ZZZY; Material Document and Classification: QQ-N-281,CLASS B-CD FED SPEC 1ST MATERIAL RESPONSE OR QQ-N-281,CLASS B-HF FED SPEC 2ND MATERIAL RESPONSE OVERALL; Nominal Thread Size: 0.620 INCHES IN. 8 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.