The Washer,flat, cataloged under National Stock Number 5310-01-595-9524, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-595-9524 |
| Primary Part Number | 4089133 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Overall Diameter | 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS 5732 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | NICKEL OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.591 INCHES MINIMUM AND 0.596 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 | F |
| Part Number | Manufacturer |
|---|---|
| 4089133 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| 4089133 | Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA) |
| 4089133 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4089133 | Paramount Machine Company, Inc. Dba Paramount Machine Co Inc (USA) |
NSN 5310-01-595-9524 is a Washer,flat, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-595-9524 has 4 manufacturer part numbers on file: 4089133 (Rtx Corporation Div Pratt & Whitney), 4089133 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), 4089133 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4089133 (Paramount Machine Company, Inc. Dba Paramount Machine Co Inc).
Key specifications for 4089133: Overall Diameter: 1.120 INCHES MINIMUM AND 1.150 INCHES MAXIMUM IN; Material Document and Classification: AMS 5737 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OR AMS 5732 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: MARK IDENT PER SPEC PWA 310 CLASS 16; DRAWING INTERPRETATION PER SPEC PWA 79360; Surface Treatment: NICKEL OVERALL. 6 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.