Trev's Vintage Machine Shop

This is a set of 1/4 UNF (Unified Fine) flat slotted countersunk screws, made from stainless steel.

Each screw has a 1/4 UNF thread (28 TPI), the male thread typically measures 0.247 inch (6.28 mm) diameter, and the heads typically measure 0.47 inch (11.9 mm) diameter.

These are available in the following lengths:

• 5/16 in long (0.3125 in, 0.79 cm)
• 1/2 in long (0.5 in, 1.27 cm)
• 5/8 in long (0.625 in, 1.59 cm)
• 3/4 in long (0.75 in, 1.91 cm)
• 1 in long (2.54 cm)
• 1 1/4 in long (1.25 in, 3.18 cm)
• 1 1/2 in long (1.5 in, 3.81 cm)

They are sold in sets of 2, 4, 6, 8 or 10 screws. These are good quality screws in brand new condition, a few screws may have slight marks from storage. All items are dispatched quickly via Royal Mail 2nd Class, with tracked postage available at extra cost.

Not what you want? Return the item unused for a refund.

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Free postage to UK mainland only. If you have any questions then please ask.