1" UNC Hex Nut, 304 Stainless Steel - XNUA21UNC
Available
Made in 304 (A2) stainless steel, the UNC Standard Hex Nut is a six-sided nut that screws onto a bolt, stud or threaded rod and is tightened with a spanner or socket.
This listing has 11 variants covering sizes 8-32 to 1". Pack quantities depend on size: packs of 25 to 200.
A2 (304) stainless steel is the common general-purpose austenitic grade. It resists corrosion well indoors, in fresh water and in most general outdoor conditions, but it is not recommended where chlorides are present, such as coastal, pool and marine settings. Choose A4 (316) there. UNC (Unified National Coarse) is the coarse inch-based thread. Small sizes are given as a number and threads per inch, such as 8-32 or 10-24, and larger sizes as fractions of an inch.
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
- Indoor architectural and joinery work
- General engineering and maintenance fastening
- Larger sizes for frames, plant and structural fixings
- Small sizes for enclosures, instruments and light fittings
- Food, beverage and chemical plant fittings
- Kitchen, bathroom and laundry fixtures
Features
- Range covers 8-32 to 1" in 11 variants
- Hex form for spanner or socket tightening
- Matches bolts and studs of the same thread
- Supplied in packs of 25 to 200
- Inch sizing matches imported UNC equipment
- A2 (304) stainless steel for indoor, fresh water and general outdoor use
Key specifications
| Specification | Detail |
|---|---|
| Product | UNC 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 | A2 (304) stainless steel |
| Fitting tip | Use anti-seize on the thread to reduce galling |
| Sizes available | 8-32 to 1" |
| Supplied in packs of | 25 to 200, by size |
| Variants | 11 |
| Head type | Hex |
| Suited to | Indoor, fresh water and general outdoor use |
| Key features | Hex form for spanner or socket tightening; Matches bolts and studs of the same thread |
| Thread system | UNC (Unified National Coarse) |
| Magnetic response | Generally non-magnetic (austenitic); cold-worked parts can show weak magnetism |
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 coastal or chloride-exposed use, choose the A4 (316) version: UNC Standard Hex Nut - 316 Stainless Steel.
Related products
Other versions in this range: BSW Standard Hex Nut - 316 Stainless Steel and Hex Nut Metric Fine A4 (316). Often used with: UNC Hex Bolt - 304 Stainless Steel and UNC Hex Set Bolt (Full Thread) - 304 Stainless Steel.
Resources
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1"
Model Number: XNUA21UNC
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1/2"
Model Number: XNUA212UNC
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1/4"
Model Number: XNUA214UNC
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3/4"
Model Number: XNUA234UNC
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3/8"
Model Number: XNUA238UNC
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5/8"
Model Number: XNUA258UNC
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5/16"
Model Number: XNUA2516UNC
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7/8"
Model Number: XNUA278UNC
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7/16"
Model Number: XNUA2716UNC
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8-32
Model Number: XNUA2832UNC
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10-24
Model Number: XNUA21024UNC
