The Washer,preload Indicating, cataloged under National Stock Number 5310-01-330-8518, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-330-8518 |
| Primary Part Number | 03A279-6-124 |
| Item Name | Washer,preload Indicating |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| Status | ACTIVE |
| Outside Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Bolt Minimum Tensil Strength | 11160 POUNDS PER SQUARE INCH LBS |
| Unloaded Length | 0.296 INCHES MAXIMUM IN |
| Recess Angle | 120.0 DEGREES NOMINAL |
| 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 |
|---|---|
| 03A279-6-124 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| Reference | Meaning |
|---|---|
| PLI22-6-12.4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-330-8518 is a Washer,preload Indicating, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-330-8518 has 1 manufacturer part number on file: 03A279-6-124 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems).
Key specifications for 03A279-6-124: Outside Diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN; Bolt Minimum Tensil Strength: 11160 POUNDS PER SQUARE INCH LBS; Unloaded Length: 0.296 INCHES MAXIMUM IN; Recess Angle: 120.0 DEGREES NOMINAL. 4 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.