The Washer,flat, cataloged under National Stock Number 5310-01-165-4738, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Amz Alabama 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-165-4738 |
| Primary Part Number | 2151 2022-173 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Amz Alabama Inc. |
| Status | ACTIVE |
| Overall Diameter | 22.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 10.5 MILLIMETERS NOMINAL MM |
| Thickness | 2.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 2151 2022-173 PRIMARY | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 21512022-173 | 5/9 Secondary reference Bae Systems Hagglunds Ab |
| 10186436 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 90716-991 | 3/9 Design control — primary reference U.s. Defense Services, Inc. Dba Usds |
NSN 5310-01-165-4738 is a Washer,flat, manufactured by Amz Alabama Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-165-4738 has 1 manufacturer part number on file: 2151 2022-173 (Amz Alabama Inc.).
Key specifications for 2151 2022-173: Overall Diameter: 22.0 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Special Features: USED ON 2350-01-132-9099; Peripheral Shape Style: ROUND. 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.