5/16" Shoulder (1/4" x 20 TPI UNC Coarse Thread) Plain Black Uncoated Grade 12.9 Socket Head (5/32" Key) Screws ISO 7379
As low as
$7.00
In stock
SKU
31SHC516P_configurable
- Socket Shoulder Screws are also known as stripper bolts, are essentially a socket cap screw that is only partially threaded with a shoulder. Shoulder bolts are measured by their diameter of shoulder x length of shoulder x thread diameter. These bolts are often used on machinery to provide a smooth surface for bearings to ride on
- Also known as: Shoulder Screws, Stripper Bolts, Socket Head Shoulder Screws, Socket Head Stripper Bolt
- Material / Coating: Black or plain finish is unfinished (bare steel) has no actual protective coating. You will not have any corrosion resistance and the product will rust over time. The term “black” is an old industry term for plain finish. Depending on the material grade and heat treatment process the colour can vary from a shiny oily finish to a dull black
- What does TPI stand for?: TPI stands for “threads per inch” which literally means the number of threads within each inch on a screw, a bolt, or a fastener. To determine the TPI of a socket screw, count the number of threads contained within an inch of length or use a thread checker. If the screw is less than an inch you count the number of threads over ½” of an inch of the screw and then muliply the number by 2. An example: 1/4" x 5/8" UNC Socket Screw has a TPI of 20. Measure 1/2" of thread, count the number of threads, there should be approx 10, then multiply that by 2 to give you 20 TPI. 1/4" x 5/8" UNF screw has a TPI of 28. Measure 1/2" of thread, count the number of threads, there should be approx 14, then multiply that by 2 to give you 28 TPI
- Measurements: Thread Lengths have been included as a guide only. Due to stock being sourced from multiple suppliers variations do exist. We will always ship the same brand and thread length but subsequent orders may be another brand and the thread length may be slightly different. If thread length is critical, please message us, we are happy to physically check our stock and advise prior to shipping
- 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 head dimensions, thread lengths visible stamped head markings, appearance or actual finish
- Driver bits to suit:A large range of suitable driver bits are in the "Driving" section of our website
- 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
- Updating our site: If you see any problems with any of our specifications or you require additional information please contact us
- 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
- Buy with confidence: ⇒ 10+ years experience selling online, > 19,000 stock lines, > 80 million pieces ex stock in Brisbane QLD
| System of Measurement | Imperial |
|---|---|
| Product | Socket Shoulder Screw |
| Head Type | Cap Head |
| Size | 5/16" |
| 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 | Poor |
| Class / Grade | High Tensile Grade 12.9 |
| Material | Alloy Steel Heat Treated |
| Finish | Plain Black Uncoated |
| Length (l) | Select from the dropdown |
| Shoulder Diameter (ds) | 0.3085 - 0.3105" (7.84 - 7.89mm) |
| Head Diameter (a) | 0.419 - 0.438" (10.64 - 11.13mm) |
| Thread Length Max (t) | 0.437" |
| Head Height (h) | 0.209 - 0.219" (5.31 - 5.56mm) |
| Drive Size | 5/32" |
| Drive Type | Internal Hex |
| Closest size in mm | M8 (8mm) |
| Standard Made To | ISO 7379 |
| Brand | Brighton Best |
| Alternative Brands | Hobson Engineering | Bremick Fasteners |