# O1 Tool Steel Rod, Material Tool Steel, Material Grade O1, Overall Length 36 in, Heat Treatable Yes, Heat Treatment Oil Hardened, Mechanical Finish Precision Ground, Outside Diameter 11/64 in, Outside Diameter Tolerance +/-0.0005 in, Yield Strength 55,000 psi, Fabrication Hot Rolled, Rockwell Hardness B100, Brinell Hardness 275, Tensile Strength 95,000 psi, Machinability 90 Percent, Length Tolerance +1/8 in/-0 in, Includes Material Certificate Yes

**Manufacturer:** Zoro Select  
**MPN:** `O1D#186`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Zoro Select |
| Manufacturer name | Zoro Select |
| Manufacturer | Zoro Select |
| CategoryId | 7578 |
| CategoryIdL1 | 37 |
| CategoryIdL2 | 18890 |
| CategoryIdL3 | 7578 |
| CategoryL1 | Raw Materials |
| CategoryL2 | Alloy Steel |
| CategoryL3 | Alloy Steel Rods |
| DimensionUnit | inch |
| GTIN | None |
| GraingerSku | 33J260 |
| UPC | None |
| UnitOfMeasure | EA |
| Weight | 0.25 |
| WeightUnit | lbs |
| cali_prop65_message | WARNING: Cancer - www.P65Warnings.ca.gov |
| cali_prop65_orglabel | False |
| cali_prop65_warnmsgscenario | 5 |
| cali_prop65_whtlabel | True |
| countryOfOrigin | NL |
| height | 0.2 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 36.3 |
| moq | 1 |
| MPN | O1D#186 |
| multiple | 1 |
| qtyInStock | 9 |
| qtyInStockOverride | -2 |
| SKU | G4630586 |
| tierMinQty1 | 1 |
| tierPrice1 | 5.55 |
| url | https://www.zoro.com/zoro-select-oil-hard-drill-rod-o1-18-0168-in-o1d186/i/G4630586/ |
| width | 0.2 |
| Length | 36 in |
| Lettered/Numbered Size | #18 |
| Length Tolerance | +0.125 in/-0.000 in |
| Dia Tolerance | +/-0.0005 in |
| Overall Length | 36 in |
| Outside Diameter Tolerance | +/-0.0005 in |
| Outside Diameter | 11/64 in |
| Grade | O1 |
| Material | Steel |
| Finish | 15 RMS Max |
| Hardness Scale | 275 BHN Max |
| Item | O1 Tool Steel Rod |
| Standards | UNS T31501, SAE J437, ASTM A-681-94, FEDERAL QQT-570 REV C |
| Decimal Equivalent | 0.168 in |
| Product Type | Oil Hard, Drill Rod |
| Heat Treatable | Yes |
| Includes Material Certificate | Yes |
| Heat Treatment | Oil Hardened |
| Tensile Strength | 95,000 psi |
| Appearance | 15 RMS Max |
| Fabrication | Hot Rolled |
| Rockwell Hardness | B100 |
| Brinell Hardness | 275 |
| Material Grade | O1 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G4630586 | 5.55 | 1 | 9 | 1 |

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Structured data: `/python/html6/product/500/93000000/93485000/part_--O1D186---ZoroSelect--fa22994bf9.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp