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 10/05/2026 13:56:24
Set Screw, UNC, 5/16" X 1 1/2", CSK, Flat Head
5/16" x 18 TPI x 1-1/2" Full Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (3/16" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Tue – Thu
Hobsons - 5/16 x 1-1/2 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc516/112 (Pack Of 100)
Delivery between 11–19 May $7.95
5/16 x 1 1/2" UNC Flat Head Socket Screw Plain - Box of 100
Delivery between 13–20 May $12.61
Pack Of 200 Plain Black 5/16" X 1-1/2" Unc 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!
| Fastener Size | 5/16" |
| Fastener Length | 1 1/2" |
| System of Measurement | UNC |
| Finish | Plain |
| Drive Type | Socket (Allen Key) |
Set Screw, UNC, 5/16" X 1 1/2", CSK, Flat Head
5/16" x 18 TPI x 1-1/2" Full Thread UNC Coarse Countersunk Head Socket Screw Grade 10.9 (3/16" Key) Plain Black Uncoated ANSI B 18.3
Free delivery between Tue – Thu
Hobsons - 5/16 x 1-1/2 Plain Ansi B18.3 / Astm F835 Unc Socket Screw Countersunk H | Knc516/112 (Pack Of 100)
Delivery between 11–19 May $7.95
5/16 x 1 1/2" UNC Flat Head Socket Screw Plain - Box of 100
Delivery between 13–20 May $12.61
Pack Of 200 Plain Black 5/16" X 1-1/2" Unc 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!
| Fastener Size | 5/16" |
| Fastener Length | 1 1/2" |
| System of Measurement | UNC |
| Finish | Plain |
| Drive Type | Socket (Allen Key) |
