The Washer,flat, cataloged under National Stock Number 5310-01-592-9202, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmaster-Carr Supply Company. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-592-9202 |
| Primary Part Number | 98023A044 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| Overall Diameter | 3.375 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Color | YELLOW OVERALL |
| Surface Treatment | CHROMATE AND ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.875 INCHES NOMINAL IN |
| Thickness | 0.170 INCHES MINIMUM AND 0.210 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 |
|---|---|
| 98023A044 | Mcmaster-Carr Supply Company (USA) |
| Reference | Meaning |
|---|---|
| 429265E-ITEM28 | D/9 Drawing number reference only Cbs Broadcasting Inc. Dba Cbs Div Bechtel Plant Machinery Inc. - Pittsburgh |
| 013893 | 5/9 Secondary reference Wrought Washer Mfg., Inc. |
| 015093 | 3/9 Design control — primary reference Wrought Washer Mfg., Inc. |
NSN 5310-01-592-9202 is a Washer,flat, manufactured by Mcmaster-Carr Supply Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-592-9202 has 1 manufacturer part number on file: 98023A044 (Mcmaster-Carr Supply Company).
Key specifications for 98023A044: Overall Diameter: 3.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: BLANK RECTANGULAR; Color: YELLOW OVERALL; Special Features: MATERIAL GRADE 8 STEEL SAE STANDARD. WASHER FOR 1.750 INCH SCREW SIZE 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.