The Washer,recessed, cataloged under National Stock Number 5310-01-015-9893, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Commercial. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-015-9893 |
| Primary Part Number | 6-55097-18 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-S-5626 COND D MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 COND D MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 COND D MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN |
| Material Thickness | 0.280 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Recess Diameter | 1.205 INCHES MINIMUM AND 1.211 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 4340 OVERALL |
| Hole Diameter | 1.000 INCHES MINIMUM AND 1.007 INCHES MAXIMUM IN |
| Recess Angle | 90.0 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 |
|---|---|
| 6-55097-18 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| 6-55097-18 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-015-9893 is a Washer,recessed, manufactured by The Boeing Company Div Commercial, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-015-9893 has 1 manufacturer part number on file: 6-55097-18 (The Boeing Company Div Commercial).
Key specifications for 6-55097-18: Style Designator: RECESSED; Material Document and Classification: MIL-S-5626 COND D MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 COND D MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5000 COND D MIL SPEC 3RD MATERIAL RESPONSE OVERALL; Outside Diameter: 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN; Material Thickness: 0.280 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN. 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.