The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-310-7641, 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 12 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 19 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-310-7641 |
| Primary Part Number | PL-11738-F-18-ITEM NO-179CL1 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Width Across Flats | 0.985 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Criticality Code Justification | ZZZW |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Departure From Cited Document | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Nondefinitive Spec/std Data | 3 TYPE AND A STYLE |
| Nut Height | 0.547 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 11 |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| PL-11738-F-18-ITEM NO-179CL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| QQN281(GR405) 5/8-11UNC-2BL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| M1222N1N10C20NANNL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 869-313L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 869-7583L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 700-7540 PIECE 13L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 700-7839-IT NO-11L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 700-7540 PC 13 | 5/1 Secondary reference Aqua-Chem, Inc. |
| MIL-DTL-1222,QQ-N-281GR405 CLBL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| PL-11256-F-18-ITEM NO-179C | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 869-313 | 3/1 Design control — primary reference Aqua-Chem, Inc. |
| MIL-DTL-1222L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
| 5/8-11UNC-2B TYIII STYLE A | 4/1 Identification reference U.S. Government activity |
| MIL-DTL-1222 QQ-N-281 GR405CLAL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| M1222N1N10C20NANN | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MIL-DTL-1222,TYIII,STYAL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-DTL-1222 QQ-N-281 GR405CLA | 4/1 Identification reference U.S. Government activity |
| MIL-DTL-1222,QQ-N-281GR405 CLB | 5/1 Secondary reference U.S. Government activity |
| PL-11256-F-18-ITEM NO-179CL1 | C/1 Advisory reference — outside the item-of-supply concept Naval Inventory Control Point Mechanicsburg |
| QQN281(GR405) 5/8-11UNC-2B | 4/1 Identification reference U.S. Government activity |
| 869-7583 | 5/1 Secondary reference Aqua-Chem, Inc. |
| PL-11738-F-18-ITEM NO-179C | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| 5/8-11UNC-2B TYIII STYLE AL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 700-7839-IT NO-11 | 5/1 Secondary reference Aqua-Chem, Inc. |
| MIL-DTL-1222,TYIII,STYA | 5/1 Secondary reference U.S. Government activity |
NSN 5310-01-310-7641 is a Nut,plain,hexagon, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-310-7641 has 7 manufacturer part numbers on file: PL-11738-F-18-ITEM NO-179CL1 (Naval Inventory Control Point Mechanicsburg), QQN281(GR405) 5/8-11UNC-2BL1 (Naval Inventory Control Point Mechanicsburg), M1222N1N10C20NANNL1 (Naval Inventory Control Point Mechanicsburg), 869-313L1 (Naval Inventory Control Point Mechanicsburg), 869-7583L1 (Naval Inventory Control Point Mechanicsburg) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-710-7208. Verify interchangeability with system specifications before substitution.
Key specifications for PL-11738-F-18-ITEM NO-179CL1: Width Across Flats: 0.985 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Criticality Code Justification: ZZZW; Thread Direction: RIGHT-HAND. 12 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.