# Proto

**Manufacturer:** Proto  
**MPN:** `J4990-5MST`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto, Stanley Proto |
| DimensionUnit | inch |
| GraingerSku | 4JV97 |
| Extra Product Name | Proto |
| UPC | 662679170110, 94703175059 |
| UnitOfMeasure | EA |
| Weight | 0.1, 0.022046001186074866 |
| WeightUnit | lbs |
| atoms | 5 |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 0.7 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 1.6 |
| moq | 1 |
| MPN | J4990-5MST |
| multiple | 1 |
| qtyInStock | 255 |
| qtyInStockOverride | -2 |
| SKU | G7574944 |
| tierMinQty1 | 1 |
| tierPrice1 | 9.03 |
| url | https://www.zoro.com/proto-5-mm-tip-socket-bit-metric-38-in-drive-j4990-5mst/i/G7574944/ |
| width | 0.7 |
| EAN | 94703175059 |
| Part Number | J4990-5MST |
| Model | J4990-5MST |
| Product Group | Home Improvement |
| Drive Size | 3/8 in |
| Socket Type | Short Hex Bit |
| SAE or Metric | Metric |
| Number of Points | 6 |
| Measurement Type | Metric |
| Finish | Chrome |
| Overall Length | 1 25/32 in |
| Material | Alloy Steel |
| Size | 5mm, One Size |
| Item | Socket Bit |
| Tip Size | 5 mm |
| Features | Wear Resistance |
| Socket Depth | Short |
| Bit Style | Hex |
| Category Type | Socket Bits |
| Insert Length | 11/16 in |
| Impact Rated | No |
| Drive Type | Square |
| Tip Style | Hex |
| Replaceable Insert | No |
| Insulated | No |
| Country of Origin (subject to change) | United States |
| ASIN | B002GKFN2W |
| AdultProduct | False |
| Asin | B002GKFN2W |
| Autographed | False |
| Batteries_required | False |
| Binding | Tools & Home Improvement |
| Brand | Proto, Stanley Proto, Stanley-Proto |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G7574944 | 9.03 | 1 | 255 | 1 |
| ToolUp.com | PROTO J4990-5MST | 10.31 | 1 | None | 1 |
| motionindustries.com | 02995890 | 10.82 | 1 | None | 1 |
| Raptor Supplies | AD8FDR | 19.7882685 | 1 | None | 1 |
| Applied Industrial | 106007825 |  |  | None | 1 |
| bscsource.com | J49905MST | 11.79 | 1 | None | 1 |
| Fisher tools | J4990-5MST | 10.99 | 1 | None | 1 |
| National Supply Network | B941070 |  |  | None | 1 |
| Guardian | 33001215 | 14.18 | 1 | None | 1 |
| stellarindustrial.com | PROTO 4990-5MST |  |  | None | 1 |
| directools.com | J4990-5MST |  |  | None | 1 |
| Turner Supply | 267917011 |  |  | None | 1 |
| grainger.ca | PRT4990-5MST | 18.66047226 | 1 | None | 1 |
| National Supply Network | 33001215 | 13.46 | 1 | None | 1 |
| imsbolt.com | J4990-5MST | 17.16 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/125000000/125259500/part_--J49905MST---Proto--d47b5501f0.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp