Knurled Head Screws are a type of thumb screw designed to be turned by hand. Metric Knurled Head Screws have a round head with knurls on the outer diameter that provide grip for a person to use to turn the screw.
Much like all other screws, shoulder screws are meant to hold objects together and in a particular position. However, these screws are designed for use in parts which requires a mounting pin, joint, shaft, dowel, pivot, or sliding motion. Items such as: Bearings.
Regular screws have a threading that is present across the entire body, but custom shoulder bolts' threads disappear before the head, leaving a smooth, round, shape between the head and the threading.
| Head type | Cap head | |||
| Finish | Electrophoretic black + nylon patch | |||
Material | carbon steel | |||
Measurement system | Metric, inch | |||
Brand name | Zhuocheng | |||
Drive type | Socket | |||
Standard | DIN | |||
Salt spray test | 48H, Custom | |||
Size | M3-M18 | |||
Certificate | ISO9001-2008 | |||
Sample | Provided | |||
Service | Provided | |||
Single packaging size | 25*25*16CM | |||
Singe gross weight | 25kg | |||
Package type | (1)Small box packging | |||
(2)25-30kgs/ctn in bulk, 36-48cartons/pallet | ||||
(3)Assortment in poly bag or plastic box | ||||
Delivery time | Quantity | Delivery time | ||
1-1000pcs | 3 days | |||
1001-5000pcs | 7 days | |||
5001-10000pcs | 9 days | |||
>10000pcs | To be negotiated | |||




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