The Washer,recessed, cataloged under National Stock Number 5310-01-448-0943, 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 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-448-0943 |
| Primary Part Number | 5749946 FIND 9 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Outside Diameter | 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN |
| Material Thickness | 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Recess Diameter | 0.895 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Material | IRON ALLOY 660 OVERALL |
| Hole Diameter | 0.752 INCHES MINIMUM AND 0.766 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 |
|---|---|
| 75775CY-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 5749946 FIND 9 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-448-0943 is a Washer,recessed, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-448-0943 has 2 manufacturer part numbers on file: 75775CY-12 (Sps Technologies, Llc Dba PB Fasteners), 5749946 FIND 9 (Naval Sea Systems Command).
Key specifications for 5749946 FIND 9: Style Designator: RECESSED; Outside Diameter: 1.240 INCHES MINIMUM AND 1.260 INCHES MAXIMUM IN; Material Thickness: 0.071 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN; Recess Diameter: 0.895 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN. 8 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.