1/4" x 1-1/2" BSW Phillips Countersunk Machine Screw, 316 Stainless - CPSA414BSWX112
The price shown is for the box.
Available
Made in 316 (A4) stainless steel, the BSW Phillips Head Countersunk (Machine) Screw is a machine-thread screw with a flat countersunk head and a Phillips cross recess. The head sits flush in a countersunk hole.
This listing has 36 variants covering sizes 1/8" to 5/16" and lengths 1/4" to 4". Each variant is supplied in packs of 100.
Made from 316 (A4) stainless steel, the grade normally specified for chloride-exposed work such as coastal installations, swimming pools, marine fittings and food-processing plant. BSW (British Standard Whitworth) is an older inch-based thread found on older machinery and imported equipment. It is not interchangeable with UNC or metric threads.
Austenitic stainless steel is generally non-magnetic, although cold-worked parts can show weak magnetism. In wet conditions, keep stainless steel apart from aluminium and galvanised steel with a washer or sleeve, to reduce the risk of galvanic corrosion.
Where this product is used
- Replacement fasteners for older imported equipment
- Electrical and instrument enclosures
- Swimming pool and spa equipment
- Chemical and washdown areas
- Flush fixings in panels, brackets and plates
- Hinges and hardware that need a flat surface
Features
- Phillips cross recess for common screwdrivers
- A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
- Lengths from 1/4" to 4"
- Whitworth sizing for repairs to older equipment
- Range covers 1/8" to 5/16" in 36 variants
- Countersunk head sits flush in a countersunk hole
Key specifications
| Specification | Detail |
|---|---|
| Product | BSW Phillips Head Countersunk (Machine) Screw |
| Type | Machine-thread screw with a flat countersunk head and a Phillips cross recess |
| Material | A4 (316) stainless steel |
| Thread system | BSW (British Standard Whitworth) |
| Head type | Countersunk |
| Fitting tip | Use anti-seize on the thread to reduce galling |
| Key features | Countersunk head sits flush in a countersunk hole; Phillips cross recess for common screwdrivers |
| Magnetic response | Generally non-magnetic (austenitic); cold-worked parts can show weak magnetism |
| Size range | 1/8" to 5/16" |
| Length range | 1/4" to 4" |
| Drive | Phillips |
| Typical environment | Coastal, marine, pool and food-processing use |
| Pack quantity | 100 |
| Number of variants | 36 |
Selecting the right option
The material needs a countersink cut to suit the head. Use a correctly sized Phillips driver and avoid power drivers at speed. A drop of anti-seize on the thread helps prevent galling. Where chlorides are not a concern, the A2 (304) version costs less: BSW Phillips Head Countersunk (Machine) Screw - 304 Stainless Steel.
Related products
Other versions in this range: Metric Phillips Head Countersunk (Machine) Screw - 304 Stainless Steel and Metric Phillips Head Countersunk (Machine) Screw - 316 Stainless Steel. Often used with: BSW Standard Hex Nut - 316 Stainless Steel.
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BSW Phillips Head Countersunk (Machine) Screw - 316 Stainless Steel: 1/4" / 1 1/2"
SKU: A0072769 | Model: CPSA414BSWX112
CPSA414BSWX112: 1/4" x 1-1/2" BSW Phillips countersunk machine screw, 316 Stainless Steel. Sold in a box of 100.