5/16" UNC Nylon Insert Lock Nut, 304 Stainless Steel - XNNA2516UNC
The price shown is for the box.
Available
The UNC Hex Nylon Insert Lock Nut, 304 Stainless Steel is available in 11 sizes (8-32 to 1") and is a hex nut with a nylon ring set into the top. The nylon grips the bolt thread and resists loosening from vibration.
A2 stainless (grade 304) gives sound general corrosion resistance for inside work, fresh water and ordinary outdoor exposure. It is not the grade normally chosen for coastal, pool or marine work, where A4 (316) is recommended. 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.
The range runs to 11 variants, covering sizes 8-32 to 1". Pack quantities depend on size: packs of 25 to 100.
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
- Small sizes for enclosures, instruments and light fittings
- Food-service and light food-handling equipment
- Food and beverage equipment
- Indoor architectural and joinery work
- Equipment that is hard to re-tighten
- Larger sizes for frames, plant and structural fixings
Features
- Nylon insert grips the thread and resists loosening
- UNC (inch) thread for equipment built to inch sizes
- Choice of 11 sizes, 8-32 to 1"
- Supplied in packs of 25 to 100
- A2 (304) stainless steel for indoor, fresh water and general outdoor use
- Hex form for spanner or socket tightening
Key specifications
| Specification | Detail |
|---|---|
| Product | UNC Hex Nylon Insert Lock Nut |
| Type | Hex nut with a nylon ring set into the top |
| Material | A2 (304) stainless steel |
| Fitting tip | Use anti-seize on the thread to reduce galling |
| Sizes available | 8-32 to 1" |
| Suited to | Indoor, fresh water and general outdoor use |
| Key features | Nylon insert grips the thread and resists loosening; Hex form for spanner or socket tightening |
| Number of variants | 11 |
| Magnetic response | Generally non-magnetic (austenitic); cold-worked parts can show weak magnetism |
| Head type | Hex |
| Pack quantity | 25 to 100, by size |
| Thread system | UNC (Unified National Coarse) |
Selecting the right option
The nylon ring limits the working temperature of the nut, so check the nut's temperature limit before using it near heat. A nylon insert nut is normally treated as single-use where a tight lock is needed. The bolt must pass fully through the nylon ring. Use a stainless flat washer. Near the coast, around pools or in marine settings, use the A4 (316) version instead: UNC Hex Nylon Insert Lock Nut - 316 Stainless Steel.
Related products
Other versions in this range: Metric Hex Nylon Insert Lock Nut - 316 Stainless Steel and Metric Hex Nylon Insert Lock Nut - 304 Stainless Steel. Often used with: UNC Hex Bolt - 304 Stainless Steel and UNC Hex Set Bolt (Full Thread) - 304 Stainless Steel.
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UNC Hex Nylon Insert Lock Nut - 304 Stainless Steel: 5/16"
SKU: A0075501 | Model: XNNA2516UNC
XNNA2516UNC: 5/16" UNC nylon insert lock nut, 304 Stainless Steel. Sold in a box of 100. Suits vibrating machinery, frames and guards.
