Osculati AISI 316 Stainless Steel Slotted Countersunk Machine Screws DIN 965 / UNI 6109, M3–M8

ID 1402738

$ 30.61

1-2 weeks delivery time

Diameter, mm:

Length, mm:

Item:

5 pcs
10 pcs
25 pcs
50 pcs
100 pcs
200 pcs

Osculati countersunk machine screws are manufactured from AISI 316 stainless steel and listed under DIN 965 / UNI 6109. The supplied product descriptions specify a flat countersunk head with a straight-slot drive for installation using a matching screwdriver. The tapered head is designed to sit flush in a suitably prepared countersunk recess, while the metric machine thread engages with compatible nuts or tapped holes. The range includes 31 dimensional configurations in M3, M4, M5, M6 and M8 sizes, with lengths from 12 to 100 mm. Each variant is supplied in a box containing 5 to 200 screws, depending on the selected dimensions.

Description
Ask a Question

Osculati AISI 316 Stainless Steel Countersunk Machine Screws DIN 965 / UNI 6109

Osculati countersunk machine screws are manufactured from AISI 316 stainless steel and are listed under DIN 965 / UNI 6109 in the supplier catalogue. They feature a flat countersunk head and a metric threaded shaft for fastening compatible marine fittings, mounting components and mechanical assemblies.

The flat countersunk head has a tapered underside designed to fit into a matching countersunk recess. When correctly installed, the head can sit flush with the surrounding mounting surface, providing a smooth finish.

The supplied product descriptions identify these screws as having a straight-slot drive for installation using a flat-blade screwdriver. However, the catalogue illustration shows a cross-recessed drive, so the drive specification should be confirmed before ordering or installation.

These are metric machine screws intended for use with matching threaded holes or compatible nuts. Unlike self-tapping screws, they are not designed to cut or form threads directly into an unthreaded workpiece.

AISI 316 stainless steel provides corrosion resistance for suitable marine, outdoor and general mechanical applications. The countersunk design makes these screws suitable for mounting arrangements where a flush head is required.

The range includes 31 dimensional configurations across five nominal thread sizes: M3, M4, M5, M6 and M8. Available lengths range from 12 to 100 mm, depending on diameter. Each variant is identified by an individual Osculati part number and supplied in a specified box quantity.

Technical Specifications

Brand	Osculati
Product Type	Countersunk Machine Screw
Standards Listed	DIN 965 / UNI 6109
Material	AISI 316 Stainless Steel
Head Type	Flat Countersunk Head
Drive Type	Slotted according to product descriptions; verification required
Thread Type	Metric Machine Thread
Available Thread Sizes	M3, M4, M5, M6, M8
Available Length Range	12–100 mm
Box Quantities	5, 10, 25, 50, 100, 200 pcs
Number of Variants	31
Dimensions Format	Nominal Thread Diameter × Screw Length

Features and Applications

Manufactured from AISI 316 stainless steel for corrosion resistance.
Flat countersunk head for flush installation in a suitable recess.
Metric machine threads for compatible nuts or tapped holes.
Suitable for fastening compatible marine hardware, panels and mounting fittings.
Available in five thread sizes and 31 dimensional configurations.
Supplied in boxes containing 5 to 200 screws, depending on size.

Available Sizes and Part Numbers

Thread Size	Length	Box Quantity	Osculati Part No.
M3	12 mm	200 pcs	A4-965-03X012
M3	16 mm	200 pcs	A4-965-03X016
M3	20 mm	100 pcs	A4-965-03X020
M3	25 mm	100 pcs	A4-965-03X025
M3	30 mm	100 pcs	A4-965-03X030
M3	40 mm	50 pcs	A4-965-03X040
M4	16 mm	100 pcs	A4-965-04X016
M4	20 mm	100 pcs	A4-965-04X020
M4	30 mm	50 pcs	A4-965-04X030
M4	40 mm	50 pcs	A4-965-04X040
M4	50 mm	25 pcs	A4-965-04X050
M5	20 mm	50 pcs	A4-965-05X020
M5	30 mm	50 pcs	A4-965-05X030
M5	40 mm	25 pcs	A4-965-05X040
M5	50 mm	25 pcs	A4-965-05X050
M5	60 mm	25 pcs	A4-965-05X060
M6	20 mm	50 pcs	A4-965-06X020
M6	30 mm	50 pcs	A4-965-06X030
M6	40 mm	25 pcs	A4-965-06X040
M6	50 mm	25 pcs	A4-965-06X050
M6	60 mm	10 pcs	A4-965-06X060
M6	70 mm	10 pcs	A4-965-06X070
M6	80 mm	10 pcs	A4-965-06X080
M6	100 mm	5 pcs	A4-965-06X100
M8	30 mm	10 pcs	A4-965-08X030
M8	40 mm	10 pcs	A4-965-08X040
M8	50 mm	10 pcs	A4-965-08X050
M8	60 mm	10 pcs	A4-965-08X060
M8	70 mm	5 pcs	A4-965-08X070
M8	80 mm	5 pcs	A4-965-08X080
M8	100 mm	5 pcs	A4-965-08X100

Size Selection

Select the required nominal metric thread diameter and screw length according to the thickness of the components and the available mounting space. Ensure that the countersunk recess accommodates the screw head and that the thread matches the intended nut or tapped hole.

Available lengths vary by thread diameter. Each dimensional configuration has a fixed box quantity as indicated above. Verify the drive type before selecting the installation tool.