# Zoro Select

**Manufacturer:** Zoro Select  
**MPN:** `U01000.031.0325`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Zoro Select |
| Manufacturer name | Zoro Select |
| Manufacturer | Zoro Select |
| DimensionUnit | inch |
| GraingerSku | 25CK81 |
| Extra Product Name | Zoro Select |
| UnitOfMeasure | PK |
| Weight | 3.7 |
| WeightUnit | lbs |
| atoms | 50 |
| cali_prop65_orglabel | True |
| cali_prop65_warnmsgscenario | 7 |
| cali_prop65_whtlabel | True |
| countryOfOrigin | ZZ |
| height | 1.8 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 6.4 |
| moq | 1 |
| MPN | U01000.031.0325 |
| multiple | 1 |
| qtyInStock | 9 |
| qtyInStockOverride | -2 |
| SKU | G0329476 |
| tierMinQty1 | 1 |
| tierPrice1 | 20.69 |
| url | https://www.zoro.com/zoro-select-grade-5-516-18-hex-head-cap-screw-black-oxide-steel-3-14-in-l-50-pk-u010000310325/i/G0329476/ |
| width | 6.2 |
| Item | Hex Head Cap Screw |
| Thread Size | 5/16"-18 |
| Fastener Length | 3 1/4 in |
| Material | Steel |
| Finish | Black Oxide |
| Material Grade/Class | Grade 5 |
| Thread Style | Partially Threaded |
| Head Width | 0.5 in |
| Drive | Hex |
| Standards | ASME B18.2.1 SAE J429 |
| System of Measurement | Inch |
| Thread Direction | Right Hand |
| Proof Load | 74,000 to 85,000 psi |
| Tensile Strength | 120,000 psi |
| Temp Range | -58 Degrees to 302 Degrees F |
| Rockwell Hardness | C19 to C30 |
| Thread Type | UNC (Coarse) |
| Head Height | 13/64 in |
| Package Quantity | 50 |
| Dimensional Standards | ASME B18.2.1 |
| Minimum Thread Length | 7/8 in |
| Screw Size | 5/16 in |
| Thread Fit | 2A |
| Overall Length | 3 1/4 in |
| Head Style | Hex |
| Minimum Temperature | -58 Degrees F |
| Globally Sourced | Globally Sourced |
| Maximum Temperature | 302 Degrees F |
| Thread Pitch | Partially Threaded |
| Material Quality Standard | SAE J429 |
| Hex Head Cap Screw Type | Hex Head Cap Screw |
| Threadlocker Minimum Temperature | 5/16"-18 |
| Manufacturer Location | Globally Sourced |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G0329476 | 20.69 | 1 | 9 | 1 |

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Structured data: `/python/html6/product/500/85000000/85014500/part_--U010000310325---ZoroSelect--f5c9b58448.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp