4B1221 Machine Screw fit Caterpillar
4B1221 Machine Screw fit Caterpillar
- New aftermarket part
- 30 day returns
- Manufacturer's warranty
4B1221 Machine Screw — SKU 4B1221
4B1221 is a pan head machine screw for Caterpillar equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).
The part is identified by the Caterpillar equipment part number 4B1221 and the hyphenated number format 4B-1221. It is a threaded hardware component intended for installation in assemblies that use a #8-32 machine screw thread.
Fitment
This machine screw is listed for use on Caterpillar equipment. The available product data does not specify particular Caterpillar machine models or equipment series.
Cross-reference numbers
- 4B1221
- 4B-1221
Specifications
| Part type | Machine screw |
| Head type | Pan head |
| Thread designation | #8-32 |
| Thread measurement | 32 threads per inch |
| Thread type | Standard coarse thread |
| Listed screw length | 1/2 inch |
| Listed metric length | 1.5 cm |
| Width | 0.7 cm |
| Depth | 0.7 cm |
| Weight | 0.1 lb |
| Equipment manufacturer | Caterpillar |
| SKU | 4B1221 |
The screw is specified as an inch-threaded fastener. The #8-32 designation identifies the nominal screw size and thread count, while the pan head identifies the head configuration. The product data lists the screw length separately as 1/2 inch and 1.5 cm.
The supplied part identification uses two number formats for the same reference: 4B1221 without a hyphen and 4B-1221 with a hyphen. Both numbers are included for catalog and parts identification purposes.
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