# Socket, Socket Size 21 mm, 12-Point, Alloy Steel, Chrome, Deep, Hand, Drive Size 3/8 in, Metric, Impact Rated No, Standards AS4984A, ASME B107.110-2012, SAE AS955

**Manufacturer:** Proto  
**MPN:** `J5021M`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto, PROTO, Stanley Proto |
| CategoryId | 5307 |
| CategoryIdL1 | 10 |
| CategoryIdL2 | 4423 |
| CategoryIdL3 | 5307 |
| CategoryL1 | Tools & Machining |
| CategoryL2 | Hand Tools |
| CategoryL3 | Sockets & Ratchets |
| CategoryL4 | Sockets |
| DimensionUnit | inch |
| GTIN | 662679163327 |
| GraingerSku | 429N52 |
| UPC | 662679163327, 94714758333 |
| UnitOfMeasure | EA |
| Weight | 0.36, 0.02, 0.022046001186074866, 2.18 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| height | 1.3 |
| jsonUrlData | 924526ffbdad25e5923b |
| length | 3.5 |
| moq | 1 |
| MPN | J5021M |
| multiple | 1 |
| qtyInStock | 37 |
| qtyInStockOverride | -2 |
| SKU | G3904938 |
| snippet | Socket, Socket Size 21 mm, 12-Point, Alloy Steel, Chrome, Deep, Hand, Drive Size 3/8 in, Metric, Impact Rated No, Standards AS4984A, ASME B107.110-2012, SAE AS955 |
| tierMinQty1 | 1 |
| tierPrice1 | 9.99 |
| url | https://www.zoro.com/proto-38-in-drive-21mm-triple-square-metric-socket-12-points-j5021m/i/G3904938/ |
| width | 1.3 |
| EAN | 94714758333, 662679163327 |
| Part Number | J5021M |
| Product Group | Home Improvement |
| Drive Size | 3/8 in |
| Overall Length | 2 3/4 in |
| Size | 21mm, One Size |
| Socket Sizes | 21mm |
| Socket Depth | Deep |
| Socket Size | 21 mm |
| Socket Type | Deep Impact |
| SAE or Metric | Metric |
| Number of Points | 12 |
| Material | Alloy Steel, Blend |
| Finish | Chrome |
| Output Type | Triple Square |
| Item | Deep Impact Socket |
| Standards | AS4984A, ASME B107.110-2012, SAE AS955 |
| Drive Type | Hand |
| Tether Capable | Not Tether Capable |
| Impact Rated | No |
| Measurement Type | Metric |
| Tether Style | Not Tether Capable |
| Socket Shape | 12-Point |
| Tether Ready | No |
| Product Type | Socket |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G3904938 | 9.99 | 1 | 37 | 1 |
| Global Industrial | WBB941619 |  |  | None | 1 |
| ToolUp.com | PROTO J5021M | 11.37 | 1 | None | 1 |
| wylaco.com | J5021M |  |  | None | 1 |
| Applied Industrial | 105859541 |  |  | None | 1 |
| bscsource.com | J5021M |  |  | None | 1 |
| sustainablesupply.com | C3036163 | 14.65 | 1 | None | 1 |
| grainger.ca | PRT5021M | 13.10805636 | 1 | None | 1 |
| Guardian | 88950977 |  |  | None | 1 |
| motionindustries.com | 01166527 | 15.28 | 1 | None | 1 |
| kscdirect.com | BLA J5021M |  |  | None | 1 |
| stellarindustrial.com | PROTO 5021M |  |  | None | 1 |
| directools.com | J5021M | 8.8 | 1 | None | 1 |
| autotoolworld.com | POJ5021M | 12.39 | 1 | None | 1 |
| Circle C Supply | PTO03533 | 10.0 | 1 | None | 1 |
| jensentools.com | 482-950 | 18.04 | 1 | None | 1 |
| grovesindustrial.com | PRO 5021M | 11.2 | 1 | None | 1 |
| National Supply Network | 39933361 | 13.74 | 1 | None | 1 |
| imsbolt.com | J5021M | 18.04 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/33000000/33293500/part_--J5021M---Proto--fc3df90621.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp