1/2" BSW Hex Nut, 316 Stainless Steel - XNUA412BSW
The price shown is for the box.
Available
The BSW Standard Hex Nut, 316 Stainless Steel is available in 4 sizes (5/32" to 1/2") and is a six-sided nut that screws onto a bolt, stud or threaded rod and is tightened with a spanner or socket.
You can choose from 4 variants, covering sizes 5/32" to 1/2". Pack quantities depend on size: packs of 100 to 200.
A4 (316) stainless steel contains molybdenum (about 2 to 3 per cent), which improves its resistance to chlorides. It is the grade normally chosen for coastal, pool, marine and food-processing settings, and it costs more than A2 (304). 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. Stainless threads can gall (seize) when tightened under load or at speed. A smear of anti-seize on the thread and a steady tightening speed reduce the risk.
Where this product is used
- Food, beverage and chemical plant fittings
- Small sizes for enclosures, instruments and light fittings
- Food and beverage processing equipment
- General engineering and maintenance fastening
- Marine, coastal and washdown assemblies
- Larger sizes for frames, plant and structural fixings
Features
- Whitworth sizing for repairs to older equipment
- Range covers 5/32" to 1/2" in 4 variants
- A4 (316) stainless steel with molybdenum, for coastal and chloride-exposed settings
- Matches bolts and studs of the same thread
- Hex form for spanner or socket tightening
- Pack quantities to suit trade and bulk buying: packs of 100 to 200
Key specifications
| Specification | Detail |
|---|---|
| Product | BSW Standard Hex Nut |
| Type | Six-sided nut that screws onto a bolt, stud or threaded rod and is tightened with a spanner or socket |
| Material | A4 (316) stainless steel |
| Magnetic response | Generally non-magnetic (austenitic); cold-worked parts can show weak magnetism |
| Number of variants | 4 |
| Head type | Hex |
| Thread system | BSW (British Standard Whitworth) |
| Fitting tip | Use anti-seize on the thread to reduce galling |
| Typical environment | Coastal, marine, pool and food-processing use |
| Key features | Hex form for spanner or socket tightening; Matches bolts and studs of the same thread |
| Sizes | 5/32" to 1/2" |
| Supplied in packs of | 100 to 200, by size |
Selecting the right option
Match the nut to the bolt: thread system, diameter and pitch must all agree, and metric, UNC and BSW nuts do not interchange. Where a nut is tightened repeatedly, use anti-seize, because stainless threads can gall. For indoor and general outdoor use where chlorides are not a concern, the A2 (304) version is the lower-cost option: BSW Standard Hex Nut - 304 Stainless Steel.
Related products
Other versions in this range: Metric Standard Hex Nut - 304 Stainless Steel and UNC Standard Hex Nut - 304 Stainless Steel. Matching products: BSW Hex Set Bolt (Full Thread) - 316 Stainless Steel.
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BSW Standard Hex Nut - 316 Stainless Steel: 1/2"
SKU: A0075590 | Model: XNUA412BSW
XNUA412BSW: 1/2" BSW hex nut, 316 Stainless Steel. Sold in a box of 100. Suits securing bolts, studs and threaded rod.