The Washer,flat, cataloged under National Stock Number 5310-01-554-0555, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Deere & Co. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-554-0555 |
| Primary Part Number | YZ120167 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Deere & Co |
| Status | ACTIVE |
| Overall Diameter | 2.236 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4140 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.603 INCHES NOMINAL IN |
| Thickness | 0.250 INCHES NOMINAL 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 |
|---|---|
| YZ120167 | Rdo Equipment Rdo Equipment Pty Ltd (AUS) |
| YZ120167 PRIMARY | Deere & Co (USA) |
| Reference | Meaning |
|---|---|
| YZ120167 | 5/9 Secondary reference Hitachi Construction Machinery Aust Australia Pty Ltd Hitachi Construction Machinery |
| YZ120167 | 5/9 Secondary reference Rdo Equipment Pty Ltd |
NSN 5310-01-554-0555 is a Washer,flat, manufactured by Deere & Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-554-0555 has 2 manufacturer part numbers on file: YZ120167 (Rdo Equipment Rdo Equipment Pty Ltd), YZ120167 (Deere & Co).
Key specifications for YZ120167: Overall Diameter: 2.236 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: MOTOR GRADER, MODELS 670D/672D. 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.