1/4" x 20 TPI UNC Coarse Zinc (3/8" AF) Hex Flange Serrated Bolts High Tensile Grade 5 IFI 111
$5.50
In stock
SKU
51HFLC14_configurable
- Hex Flange Serrated Bolts has a hexagon head with a built-in washer and under head teeth like serrations which bite into the surface to help prevent loosening. The built-in washer acts to distribute the clamping load over a greater area and the wide flange head is designed to provide the same holding power as a washer. Can be used to fasten objects together by inserting the bolt from the one end and securing it with either a nut on the other end or into a taped hole
- Material / Coating: Zinc Plated is the most common fastener of plating due to its the low cost and shinny bright silver finish. A thin layer of zinc is applied by either electroplating or mechanically. It is intended to be used internally. Whilst some people use it externally it isnt recommended if corrosion is a concern. If you want a fastener that will withstand the outdoor elements choose from our Stainless steel range
- Grade v Class Difference: Imperial fastenings are referred to as grades, and metric fastenings are referred to as classes. Both have marking systems that make it possible to determine grade and class. An example is a ½” UNC bolt with 5 lines on the head is grade 8 and 3 lines is grade 5, both are regarded as high tensile. Metric bolts are slightly different, if it has 4.6 then it is mild steel and 8.8 is high tensile. The markings on a stainless fastener indicate the grade of material and strength, e.g. material G304 grade will have one of the following markings: A2-70, G304, A2, 304 and G316 grade stainless will have one of the following: A4-70, G316, A4, 316
- Thread Pitch (Metric): Pitch means the distance between the peaks of two threads along a screw, bolt, or fastener expressed in millimetres (mm). Used when referring to Metric parts. For example, a thread pitch of 1.50mm means that the distance between one thread and the next is 1.50mm
- Fastener length: is generally measured from the point where the surface of the material will be when the fastener is installed to the end of the fastener. Thus, fasteners with heads that sit above the surface are measured from under the head to the end of the fastener, while fasteners that sit flush with the surface are measured from the top of the head to the end of the fastener
- A guide to determining the approx. thread length, please note this is only a guide: upto and including 5" = 2 x diameter + 1/4", over 5" up to and including 8" = 2 x diameter + 1/2", over 8" = 2 x diameter + 1"
- Measurements: Every effort has been made to ensure all measurements on our site are accurate and to the relevant standard, they should only be used as a guide. If you see a problem with our specifications please contact us
- Dimensions: Our stock is sourced from various suppliers, therefore differences may exist between batches such as height, width, visible stamped markings, appearance or actual finish
- Photos: are of the product but may not be the actual diameter, height, width, length you may require, always refer to the size in the description and additional specifications data provided prior to ordering
- Disclaimer: Technical data and specifications were researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately
- Updating our site: If you see any problems with any of our specifications or you require additional information please contact us
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| System of Measurement | Imperial |
|---|---|
| Product | Hex Flange Bolt |
| Head Type | Hex Flange Head |
| Size | 1/4" |
| Size & Thread Pitch | 1/4" x 20 TPI UNC |
| Thread Pitch | 20 TPI |
| Thread Direction | Right Hand |
| Thread Type | UNC / BSW - Coarse |
| Corrosion Protection Level | Moderate |
| Class / Grade | High Tensile Grade 5 |
| Material | Carbon Steel |
| Finish | Zinc Plated |
| Length (l) | Select from the dropdown |
| Thread Length (t) | Choose your length to view |
| Product Diameter (d) | 0.242 - 0.249" (6.15 - 6.33mm) |
| Across Flats (af) | 0.367 - 0.375" (9.33 - 9.53mm) |
| Across Corners (ac) | 0.409 - 0.433" (10.39 - 11.00mm) |
| Flange Diameter (f) | 0.560" (14.23mm) |
| Head Height (h) | 0.280" (7.12mm) |
| Wrench Height | 0.170" (4.32mm) |
| Serrations under Head | Yes |
| Spanner Size | 3/8" |
| Drive Type | Hex |
| Closest size in mm | M6 (6mm) |
| Standard Made To | IFI 111 |
| Brand | Bolt and Nut Australia |
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