Product Description
No.4 Type B Non-Pointed Pan Pozi BZP Self Tapping Screws
These No.4 Type B self tapping screws feature a blunt, non-pointed end, a rounded pan head and an internal Pozi drive. They are manufactured from steel with a bright zinc plated finish for general indoor fastening and assembly applications.
The Type B thread form is designed to form a mating thread when installed into a correctly sized pre-drilled hole. Its blunt end makes it useful where a sharp point is unnecessary or where the screw must not project beyond the fastening position.
The screws have an approximate thread diameter of 2.9mm and are available in lengths from 3/16 inch to 3/4 inch, with pack quantities ranging from 10 to 1,000.
Key Features
- No.4 nominal self tapping screw size
- Approximately 2.9mm thread diameter
- Type B spaced thread form
- Approximately 24 threads per inch
- Blunt, non-pointed end
- Rounded pan head
- Internal Pozi drive
- PZ1 driver size
- Steel construction
- Bright zinc plated finish
- Designed for installation into a suitable pilot hole
- Available in packs from 10 to 1,000
Available Lengths and Dimensions
| Screw Size | Thread Diameter | Imperial Length | Approximate Metric Length | Head Diameter | Head Height |
|---|---|---|---|---|---|
| No.4 Type B | 2.9mm | 3/16" | 4.5mm | 5.6mm | 2.2mm |
| No.4 Type B | 2.9mm | 1/4" | 6.5mm | 5.6mm | 2.2mm |
| No.4 Type B | 2.9mm | 3/8" | 9.5mm | 5.6mm | 2.2mm |
| No.4 Type B | 2.9mm | 1/2" | 13mm | 5.6mm | 2.2mm |
| No.4 Type B | 2.9mm | 5/8" | 16mm | 5.6mm | 2.2mm |
| No.4 Type B | 2.9mm | 3/4" | 19mm | 5.6mm | 2.2mm |
Screw length is measured from beneath the pan head to the blunt end of the screw.
Type B Blunt Point
Unlike a conventional pointed Type AB self tapping screw, a Type B screw has a blunt, non-pointed end and a more uniform spaced thread. It must be installed into an existing pilot hole rather than driven directly into solid material.
As the screw is installed, the Type B thread forms a corresponding internal thread in a suitable material. This makes the screw useful for repeatable assembly work involving sheet metal, non-ferrous materials and suitable engineering plastics.
These are self tapping screws but are not self drilling screws. They do not have an integral drill point and cannot create their own starting hole in solid sheet material.
Bright Zinc Plated Steel
The bright zinc plated finish provides a clean metallic appearance and a basic level of corrosion protection for dry indoor and sheltered applications. The underlying steel provides suitable strength and hardness for forming threads in compatible materials.
Bright zinc plating is not intended for prolonged exposure to marine, coastal, highly humid or chemically aggressive environments. A suitable stainless steel or specialist coated fastener should be considered for these conditions.
Typical Applications
- Electrical equipment and enclosure panels
- Electronic equipment and instrument cases
- Thin sheet-metal assemblies
- Suitable plastic housings and mouldings
- Appliance panels and internal fittings
- Automotive trim and electrical components
- Light brackets, clips and cover plates
- General workshop assembly and repair work
Pilot Hole and Installation Advice
A correctly sized pilot hole is essential because the screw has a blunt point and cannot drill its own starting hole. The required pilot-hole diameter depends on the material, hardness, thickness and required thread engagement.
Use a correctly fitting PZ1 driver and keep the tool aligned with the recess. Drive the screw at a controlled speed and avoid overtightening, particularly in plastics or thin sheet material where the formed thread can be stripped.
Pozi and Phillips recesses are different. A PZ1 Pozi driver is recommended to achieve proper engagement and reduce the likelihood of cam-out or damage to the screw head.
Useful Links
- View all pan Pozi self tapping screws
- View all self tapping screws
- No.2 Type B pan Pozi zinc plated self tapping screws
- No.6 Type B non-pointed pan Pozi BZP self tapping screws
- No.4 pointed Type AB zinc plated pan Pozi self tapping screws
- No.4 A2 stainless steel pan Pozi self tapping screws
- How to measure a bolt or screw
- Fastener technical information and materials guide
Specifications are intended as a guide. Confirm the screw dimensions, material, finish, pilot-hole requirements and certification before use in safety-critical or specification-controlled applications.
