The Washer,spring Tension, cataloged under National Stock Number 5310-01-476-4974, 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. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-476-4974 |
| Primary Part Number | 4D10618-002 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES INNER |
| Surface Finish | 63.0 MICROINCHES TOP |
| Surface Finish | 125.0 MICROINCHES OUTER |
| Material Document and Classification | QQ-S-763,CLASS 410,COND T FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.200 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Material | STEEL COMP 410 OVERALL |
| Hole Diameter | 2.216 INCHES MINIMUM AND 2.226 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 4D10616FN11 | Northrop Grumman Systems Corporation (USA) |
| 4D10618-002 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4D10616 | D/9 Drawing number reference only U.S. Government activity |
| 4D10618-002 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 4D10618 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-476-4974 is a Washer,spring Tension, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-476-4974 has 2 manufacturer part numbers on file: 4D10616FN11 (Northrop Grumman Systems Corporation), 4D10618-002 (Northrop Grumman Systems Corporation).
Key specifications for 4D10618-002: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES INNER; Surface Finish: 63.0 MICROINCHES TOP; Surface Finish: 125.0 MICROINCHES OUTER. 9 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.