Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
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Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Fasteners > Screws > Socket Countersunk Screws | Flat Head Socket Screw | Flat Head/ Countersunk Socket Screws (UNC/UNF) are manufactured to ANSI B18.3 / ASTM F835 | Made of high-grade alloy steel | Available in plain and Zinc finish. |
Last updated at 12/05/2026 20:15:27
5/16" x 18 TPI x 1" Full Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (3/16" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Thu – Mon
Pack Of 30 Plain Black 5/16" X 1" Unc Coarse Countersunk Socket Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hobsons - 5/16 x 1 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc516/1 (Pack Of 100)
Delivery between 13–21 May $7.95
| Fastener Size | 5/16" |
| Fastener Length | 1" |
| System of Measurement | UNC |
| Finish | Plain |
| Drive Type | Socket (Allen Key) |
5/16" x 18 TPI x 1" Full Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (3/16" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Thu – Mon
Pack Of 30 Plain Black 5/16" X 1" Unc Coarse Countersunk Socket Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hobsons - 5/16 x 1 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc516/1 (Pack Of 100)
Delivery between 13–21 May $7.95
| Fastener Size | 5/16" |
| Fastener Length | 1" |
| System of Measurement | UNC |
| Finish | Plain |
| Drive Type | Socket (Allen Key) |
