5/16” UNC (3/8”) x 1/4”, Socket Shoulder Screw, Self-Colour, Grade 12.9, ANSI B18.3

5/16” Socket Shoulder Screw

Self-colour, high-strength socket shoulder screw with a ground shouldered section that functions as a dowel, pivot, or axle, allowing movement around it.

Quality engineering screw ideal for a numerous applications, with a hex socket allowing fastening with an Allen key / hex drive which sees them widely used.

Manufactured from self-colour, grade 12.9 high tensile steel. Also known as a shoulder bolt and consisting of a socket cap head, an enlarged unthreaded ground shoulder section, and a threaded lower section.

 Shoulder Screw Specification:

• Shoulder Length (SL): 1/4”
• Shoulder Diameter (SD): 3/8”
• Thread Length (TL): 1/2”
• Thread Diameter (TD): 5/16”
• Thread Pitch: 18
• Head Width (H): Max 0.562” - Min 0.543"
• Head Height (HH): Max 0.250” - Min 0.240”
• Drive Type (DT): Socket 3/16” (0.188”)
• Material: Self-Colour, Grade 12.9 steel
• Conformity: ANSI B18.3

A shouldered machine screw, part of an extensive but growing range of quality UNC shoulder screws available at Fusion Fixings, all with bulk purchase discounts.

Why choose Fusion Fixings?

With over 40 years of experience in the construction and fixings industry at Fusion Fixings, our aim is to bring you a range of quality, reliable fixings at great prices. With quantities starting from just one to as many as you like, with bulk price offers across a large number of our products.

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