Marine flush screws, for the water.
On a boat, every open screw head is a place for salt water to sit, a line to snag and a heel to catch. The F-Head™ closes it: a 316 stainless flush screw whose drive is hidden under a captive plunger, so the head finishes smooth and level.
Nothing for the sea to hold on to.
No slot for salt to crystallise in, no socket for water to stand in, nothing for lines, sails, towels or bare feet to catch. Just a smooth stainless head that finishes level with towers, decks, hatches and trim.
316 stainless
The marine grade of stainless steel, brushed as standard.
No open recess
Nothing to hold salt water, grime or polish residue. Wipes clean.
Serviceable at sea
Opens with a standard 6-lobe bit, so any crew can remove and reinstall it.
The drive sits inside.
- 01 · Closed
The head is one continuous, level surface. No slot, no socket, nothing to see.
- 02 · Press
A standard 6-lobe bit pushes the captive plunger down and the drive appears.
- 03 · Drive
Install or remove it like any machine screw, with full torque.
- 04 · Release
Lift the bit and the plunger springs back. The surface closes behind it.
One head, every size.
- Head
- Countersunk, flush
- Drive
- Concealed 6-lobe under a captive plunger
- Material
- 316 stainless steel, brushed
- Clearance
- Less than 6 microns
- Metric
- M3, M4, M5, M6 and M8
- Imperial
- #6-32, #8-32, #10-24, #10-32, 1/4-20, 5/16-18 and 3/8-16
- CAD
- Drawing + STEP for every part on the Shop page
Asked plainly.
What is a marine flush screw?
A screw that finishes level with the surface it secures. The F-Head™ goes further: its drive is hidden too, so there is no open recess on deck.
What stainless grade is it?
316 stainless steel, the grade used for marine hardware.
Can I remove it on board?
Yes. A standard 6-lobe bit opens the drive; no special tool is needed.
What sizes are there?
Metric M3, M4, M5, M6 and M8, and imperial #6-32, #8-32, #10-24, #10-32, 1/4-20, 5/16-18 and 3/8-16, in a range of lengths.