The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-199-3108, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-199-3108 |
| Primary Part Number | HH159638-8 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Width Across Flats | 1.631 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN |
| Thread Series | UN |
| Hardness Rating | 2.0 ROCKWELL C NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.125 INCHES IN |
| Nut Height | 0.939 INCHES MINIMUM AND 0.999 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 8 |
| Material | STEEL OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| HH159638-8 | Fairbanks Morse, Llc (USA) |
| HH159638PC8 | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| HH159638PC8 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 3323468-8 | 3/2 Design control — primary reference U.S. Government activity |
| HH159638-8 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 5310-00-199-3108 is a Nut,plain,hexagon, manufactured by Fairbanks Morse, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-199-3108 has 2 manufacturer part numbers on file: HH159638-8 (Fairbanks Morse, Llc), HH159638PC8 (Fairbanks Morse, Llc).
Key specifications for HH159638-8: Width Across Flats: 1.631 INCHES MINIMUM AND 1.687 INCHES MAXIMUM IN; Thread Series: UN; Hardness Rating: 2.0 ROCKWELL C NOMINAL; Thread Direction: RIGHT-HAND. 11 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.