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Machine screws, Flat, Zinc plated steel, #4-40

Machine screws phillips flat head

Machine screws, Flat, Zinc plated steel, #4-40

Phillips flat head

Phillips flat head

Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drive is x-shaped for installation with a Phillips screw driver.

Slotted flat head

Slotted flat head

Flat heads are countersunk (cone shaped under the head) with a flat top. Slotted drive has a simple slot for a flat bladed screw driver.

Matching Products

Click on a product # for additional info

Prod. # Description Buy
2642
Hex machine screw nuts, Zinc plated steel, #4-40
A hex nut in smaller sizes for machine screw diameters under 1/4".
$0.07 / ea
$1.65 / 100
$13.20 / 1,000
9193
Hex nylon insert lock nuts, Zinc plated steel, #4-40
A hex nut with a nylon ring to resist loosening.
$0.11 / ea
$3.92 / 100
$31.40 / 1,000
4282
SAE flat washers, Zinc plated steel, #4
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
$0.05 / ea
$1.46 / 100
$12.40 / 1,000
2599
Lock washers, Zinc plated steel, #4
Split lock washers place tension against a nut after tightening, to help prevent loosening.
$0.07 / ea
$1.60 / 100
$13.60 / 1,000

See also

Metric machine screw

Metric machine screws

Screws with machine threads for use with a nut or in a tapped hole.

Socket product

Socket screws

Screws with an Allen wrench drive.