The Washer,recessed, cataloged under National Stock Number 5310-01-331-7613, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Moeller Manufacturing & Supply, Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-331-7613 |
| Primary Part Number | MM118C4 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Moeller Manufacturing & Supply, Llc |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Outside Diameter | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Recess Diameter | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY 502 OR IRON ALLOY 660 OVERALL |
| Hole Diameter | 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Recess Angle | 80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| MM118C4 | Moeller Manufacturing & Supply, Llc (USA) |
| 03A257C4 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| AS19879C4 | Anillo Industries Llc (USA) |
| 03A257C4 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| VN948-4C | 5/9 Secondary reference U.S. Government activity |
| VN948NP4C | 3/2 Design control — primary reference U.S. Government activity |
| NS202860C4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-331-7613 is a Washer,recessed, manufactured by Moeller Manufacturing & Supply, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-331-7613 has 4 manufacturer part numbers on file: MM118C4 (Moeller Manufacturing & Supply, Llc), 03A257C4 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), AS19879C4 (Anillo Industries Llc), 03A257C4 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for MM118C4: Style Designator: RECESSED; Outside Diameter: 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN; Material Thickness: 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN; Recess Diameter: 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN. 7 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.