# Metric Socket Bits, 3-8 in Drive, 4 Mm Tip J49904M ORS-577-4990-4M - SIM Supply

**Manufacturer:** Proto  
**MPN:** `J49904M`

The Proto J4990-4M 3/8-Inch Hex Bit Socket, 4mm, is made using a heat-treated alloy for wear-resistance, which helps minimize distortion for a long life. It features a 3/8-inch drive metric hex bit socket with precise 4mm size, a 1-5/8-inch bit length, and a 2-23/32-inch overall length.

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Proto |
| Manufacturer name | Proto |
| Manufacturer | Proto |
| CategoryL1 | B2B |
| Extra Product Name | Metric Socket Bits, 3-8 in Drive, 4 Mm Tip J49904M ORS-577-4990-4M - SIM Supply |
| UPC | 00662679160333 |
| jsonUrlData | 10306114 |
| moq | 1 |
| MPN | J49904M |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | ORS-577-4990-4M |
| snippet | Proto? Metric Socket Bits Made of heat-treated alloy steel. Hex opening holds the bit allowing the bit holder to take the torque load Pack of 1. |
| tierMinQty1 | 1 |
| tierPrice1 | 10.2 |
| Brand | Proto |
| Mpn | J49904M |
| SubCategory | HAND TOOLS |
| International Shipping | No |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| simsupply.com | ORS-577-4990-4M | 10.2 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/155000000/155499500/part_--J49904M---Proto--1479888d0b.json`  
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MCP server: https://www.dataalchemy.com/mcp