The Washer,recessed, cataloged under National Stock Number 5310-01-253-3727, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-253-3727 |
| Primary Part Number | 5544138-4 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN |
| Material Thickness | 0.068 INCHES MINIMUM AND 0.088 INCHES MAXIMUM IN |
| Recess Diameter | 0.483 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Material | STEEL COMP 1330 OR STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 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 |
|---|---|
| 5544138-4 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-253-3727 is a Washer,recessed, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-253-3727 has 1 manufacturer part number on file: 5544138-4 (Naval Sea Systems Command).
Key specifications for 5544138-4: Style Designator: RECESSED; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM IN; Material Thickness: 0.068 INCHES MINIMUM AND 0.088 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.