UNC, 10/24", Full Nut, Self-Colour (5/ 8.8)

10 Pack, 10/24" Unified National Coarse (UNC) Nuts, High Tensile, Self Colour. Fixaball.co.uk sells No. 10, UNC Nuts, self colour, grade 5/ 8.8, at the best internet price, with free delivery....
£3.89

10 Pack, 10/24" Unified National Coarse (UNC) Nuts, High Tensile, Self Colour.

Fixaball.co.uk sells No. 10, UNC Nuts, self colour, grade 5/ 8.8, at the best internet price, with free delivery.

Orders placed before 2pm are usually dispatched same day (Mon-Fri).

Please make your size and pack quantity selection from the drop down menus.

Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads' friction, a slight stretch of the bolt, and compression of the parts.

The most common shape is hexagonal, for similar reasons as the bolt head - 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. It takes only 1/6th of a rotation to obtain the next side of the hexagon and grip is optimal. However polygons with more than 6 sides do not give the requisite grip and polygons with fewer than 6 sides take more time to be given a complete rotation. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts (eg cage nuts) for inaccessible areas.

Materials

Material/ Finish

Appearance

Level of Corrosion Resistance

Typical Application

High Tensile Steel

Self-Colour (black with no surface treatment)

Low, without further surface treatment

-          No exposure to moisture

-          Often Greased/ Oiled

High Tensile Steel - Zinc

Bright Shine – Blue to Yellow

Internal

-          Low exposure to moisture

High Tensile Steel -Galvanised

Textured, dull - metallic tones

External

-          Constant Weathering

-          Chemical exposure

-          Frequent Wear

A2 Stainless Steel

Dull Shine

External

-          Intermittent weathering

-          Hygiene

A4 Stainless Steel

Dull Shine

External

-          Constant Weathering

-          Chemical exposure

-          Frequent Wear

Nylon

Off white

High

-          provide electrical insulation.

-          Low weight

-          Minimal load

 

UNIFIED THREAD STANDARDS 

The basic American standards for fastening screw threads as agreed upon by standard bodies of U.K, Canada and the United States.

Unified National Coarse (UNC)is a thread form with a 60 degree flank angle, rounded roots and flat crests. For a given diameter it has a larger thread pitch than an equivalent diameter UNF thread. The unified thread is based on inch sizes and was first standardised in 1948 unifying the Whitworth and American standard thread forms.

Unified National Extra Fine (UNEF) is a Unified thread form with a very fine (small) pitch that are typically used on instruments and parts requiring a fine adjustment.

Unified National Fine (UNF) is a thread form with a 60 degree flank angle, rounded roots and flat crests. For a given diameter it has a smaller thread pitch than an equivalent diameter UNC thread.

Unified National (UN) thread form with a rounded root contour, applies only to external threads. The UN thread form has a flat, or optionally, a rounded root contour.

 

 

Image is for illustrative purposes only.

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