J4990-4MST — Proto 3/8 in. Drive 4mm Short Hex Bit Socket, size 4mm (0.157 in.). Overall length 1-25/32 in. (45.2 mm); Product weight 0.08 lb (36 g).
Compare sizes: Proto 3/8 in. Drive Short Hex Bit Socket
| Size / model | Part number | Overall length | Product weight |
|---|---|---|---|
| 7/32 in. | J49907/32ST | 1-13/16 in. | 0.1 lb |
| 1/4 in. | J49901/4ST | 1-13/16 in. | 0.11 lb |
| 5/16 in. | J49905/16ST | 1-13/16 in. | 0.11 lb |
| 3/8 in. | J49903/8ST | 1-13/16 in. | 0.12 lb |
| 4mm (this item) | J4990-4MST | 1-25/32 in. | 0.08 lb |
| 5mm | J4990-5MST | 1-25/32 in. | 0.1 lb |
| 6mm | J4990-6MST | 1-25/32 in. | 0.1 lb |
| 8mm | J4990-8MST | 1-25/32 in. | 0.1 lb |
| 9mm | J4990-9MST | 1-25/32 in. | 0.11 lb |
4mm on 3/8 in. drive: other styles
- 3/8 in. Drive 4mm Extra Long Hex Bit Socket (J4990-4MXL)
- 3/8 in. Drive 4mm Hex Bit Socket J4990-4M (J4990-4M)
- Tethered 3/8 in. Drive 4mm Hex Bit Socket (J4990-4M-TT)
From Proto:
Features
- Made of alloy steel. Polished chrome finish
- Made using a heat-treated alloy for wear-resistance which helps minimize distortion for a long life
- Hex opening holds the bit allowing the bit holder to take the torque load
LabSupplies.com is an authorized Proto dealer.
| Manufacturer part number | J4990-4MST |
|---|---|
| Brand | Proto |
| UPC | 662679170127 |
| Product type | Bit Sockets |
| Overall length | 1-25/32 in. |
| Product weight | 0.08 lb |
