# Proto

**Manufacturer:** Proto  
**MPN:** `J3020B`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto, PROTO, Stanley Proto |
| DimensionUnit | inch |
| GraingerSku | 1ANL2 |
| Extra Product Name | Proto |
| UPC | 662679090326 |
| UnitOfMeasure | EA |
| Weight | 0.1, 0.08 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 0.2 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 6 |
| moq | 1 |
| MPN | J3020B |
| multiple | 1 |
| qtyInStock | 137 |
| qtyInStockOverride | -2 |
| SKU | G3488396 |
| tierMinQty1 | 1 |
| tierPrice1 | 7.88 |
| url | https://www.zoro.com/proto-black-oxide-open-end-wrench-516-x-38-j3020b/i/G3488396/ |
| width | 1 |
| EAN | 662679090326 |
| Part Number | J3020B |
| Model | J3020B |
| Product Group | Home Improvement |
| Overall Length | 5 1/4 in |
| Size | 5/16" x 3/8", One Size |
| Features | Special Heat-Treated Alloy Steel Permits Slim Shanks For Strength and Durability, Standard Open End Configuration |
| Finish | Black Oxide |
| Material | Alloy Steel, Blend |
| SAE or Metric | SAE |
| Head Angle | 15 Degrees |
| Single End/Double End | Double End |
| Head Movement | Fixed |
| Insulated | No |
| Wrench Material | Steel |
| Wrench Shape | Straight |
| Wrench Product Grouping | Wrenches |
| Item | Open End Wrench |
| Standards | ASME B107.100-2010 |
| Tether Capable | Tether Capable |
| Head Size | 5/16 in, 3/8 in |
| Reversing | No |
| Wrench Head Sizes | 5/16 in, 3/8 in |
| Ratcheting Configuration | Non-Ratcheting |
| Wrench Item | Open End Wrench |
| Tether Style | Tether Capable |
| Wrench Length Style | Standard |
| Ratcheting | No |
| Handle Type | One Piece |
| Nonsparking | No |
| Head Offset Angle | 15 Degrees |
| Corrosion Resistant | Yes |
| Opening Type | Rounded |
| Opening Angle (Deg ) | 15 Degrees |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G3488396 | 7.88 | 1 | 137 | 1 |
| ToolUp.com | PROTO J3020B | 10.9 | 1 | None | 1 |
| wylaco.com | J3020B |  |  | None | 1 |
| motionindustries.com | 01164445 | 11.52 | 1 | None | 1 |
| Raptor Supplies | AA8XGM | 17.0172405 | 1 | None | 1 |
| AmazonSC | B0002FU9NG | 17.7 | 1 | None | 1 |
| bscsource.com | J3020B | 11.89 | 1 | None | 1 |
| National Supply Network | B334627 |  |  | None | 1 |
| Guardian | 02459923 | 14.4 | 1 | None | 1 |
| Applied Industrial | 105840265 |  |  | None | 1 |
| stellarindustrial.com | PROTO 3020B |  |  | None | 1 |
| directools.com | J3020B |  |  | None | 1 |
| Turner Supply | 267909032 |  |  | None | 1 |
| grainger.ca | PRT3020B | 16.86773144 | 1 | None | 1 |
| National Supply Network | 02459923 | 9.74 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/144000000/144045500/part_--J3020B---Proto--b80005631e.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp