The Washer,flat, cataloged under National Stock Number 5310-01-057-2973, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Elsag Bailey Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-057-2973 |
| Primary Part Number | 19734A20 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Elsag Bailey Inc |
| Status | ACTIVE |
| Overall Diameter | 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 304 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.141 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Thickness | 0.025 INCHES MINIMUM AND 0.037 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 |
|---|---|
| 19734A20 PRIMARY | Elsag Bailey Inc (USA) |
| Reference | Meaning |
|---|---|
| 19734-20 | 5/9 Secondary reference Elsag Bailey Inc |
NSN 5310-01-057-2973 is a Washer,flat, manufactured by Elsag Bailey Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-057-2973 has 1 manufacturer part number on file: 19734A20 (Elsag Bailey Inc).
Key specifications for 19734A20: Overall Diameter: 0.369 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL COMP 304 OVERALL. 7 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.