The Nut,plain,octagon, cataloged under National Stock Number 5310-00-007-9941, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-007-9941 |
| Primary Part Number | 1227S877 |
| Item Name | Nut,plain,octagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Width Across Flats | 3.812 INCHES NOMINAL IN |
| Thread Series | UN |
| Nut Counterbore Depth | 0.093 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.500 INCHES IN |
| Counterbore Diameter | 2.750 INCHES NOMINAL NUT IN |
| Nut Height | 0.485 INCHES NOMINAL IN |
| Nut Style | PLAIN, OCTAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| 1227S877 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 11662296-7 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| A1227S877 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 5310-00-007-9941 is a Nut,plain,octagon, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-007-9941 has 2 manufacturer part numbers on file: 1227S877 (Meritor Heavy Vehicle Systems, Llc), 11662296-7 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 1227S877: Width Across Flats: 3.812 INCHES NOMINAL IN; Thread Series: UN; Nut Counterbore Depth: 0.093 INCHES NOMINAL NUT IN; 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.