The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-01-044-1108, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Pentair Pump Group, Inc. Dba Fairbanks Morse Pump. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-044-1108 |
| Primary Part Number | 99K4BCPC9 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
| Status | ACTIVE |
| Width Across Flats | 1.688 INCHES NOMINAL IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.188 INCHES IN |
| Nut Height | 0.625 INCHES NOMINAL IN |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 99K4BCPC9 PRIMARY | Pentair Pump Group, Inc. Dba Fairbanks Morse Pump (USA) |
| Reference | Meaning |
|---|---|
| 99K4BDPC9 | C/1 Advisory reference — outside the item-of-supply concept Colt Industries Inc Power Systems Div |
| 99K4B-E PIECE 9 | C/1 Advisory reference — outside the item-of-supply concept Pentair Pump Group, Inc. Dba Fairbanks Morse Pump |
NSN 5310-01-044-1108 is a Nut,plain,slotted,hexagon, manufactured by Pentair Pump Group, Inc. Dba Fairbanks Morse Pump, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-044-1108 has 1 manufacturer part number on file: 99K4BCPC9 (Pentair Pump Group, Inc. Dba Fairbanks Morse Pump).
Key specifications for 99K4BCPC9: Width Across Flats: 1.688 INCHES NOMINAL IN; Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.188 INCHES IN. 10 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.