The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-554-4749, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Military Systems Group, Inc.. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-554-4749 |
| Primary Part Number | NLN-M12-175 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Military Systems Group, Inc. |
| Status | ACTIVE |
| Width Across Flats | 19.0 MILLIMETERS NOMINAL MM |
| Thread Tolerance Class | 6H INTERNAL |
| Thread Series | UNF |
| Thread Pitch in Millimeters | 1.8 |
| Temp Rating | 248.0 CELSIUS NOMINAL DEGC |
| Hardness Rating | 32.0 ROCKWELL C NOMINAL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 12.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Surface Treatment | ZINC NUT |
| Surface Treatment | ZINC LOCKING INSERT |
| Nut Style | HEXAGON |
| Thread Class | 6H |
| Material | STEEL NUT |
| Material | STEEL OVERALL EXCEPT INSERT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| 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 |
|---|---|
| NLN-M12-175 PRIMARY | Military Systems Group, Inc. (USA) |
| 94645A230 | Mcmaster-Carr Supply Co (USA) |
NSN 5310-01-554-4749 is a Nut,self-Locking,hexagon, manufactured by Military Systems Group, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-554-4749 has 2 manufacturer part numbers on file: NLN-M12-175 (Military Systems Group, Inc.), 94645A230 (Mcmaster-Carr Supply Co).
Key specifications for NLN-M12-175: Width Across Flats: 19.0 MILLIMETERS NOMINAL MM; Thread Tolerance Class: 6H INTERNAL; Thread Series: UNF; Thread Pitch in Millimeters: 1.8. 19 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.