Osculati A2 AISI 304 Stainless Steel Hex Head Bolts DIN 933 / UNI 5739, M4–M12

ID 1403514

$ 24.33

1-2 weeks delivery time

Diameter, mm:

Length, mm:

Item:

5 pcs
10 pcs
25 pcs
50 pcs
100 pcs

Osculati DIN 933 / UNI 5739 hex head bolts are manufactured from A2 (AISI 304) stainless steel and feature an external hexagonal head for installation with a matching wrench or socket. Their metric threaded shafts are designed for fastening components using compatible nuts or tapped holes. The hexagonal head provides accessible tool engagement for assembly and maintenance, while AISI 304 stainless steel offers corrosion resistance for general mechanical, outdoor and suitable marine applications. The range includes 46 dimensional configurations across six nominal thread sizes from M4 to M12, with lengths from 12 to 150 mm. Most variants are fully threaded; the M12x150 version is listed as partially threaded. Supplied in cardboard boxes containing 5 to 100 pieces, depending on size.

Description
Ask a Question

Osculati A2 AISI 304 Stainless Steel Hex Head Bolts DIN 933 / UNI 5739

Osculati hexagon head bolts are manufactured from A2 (AISI 304) stainless steel and are listed under DIN 933 / UNI 5739. They feature an external hexagonal head and a metric threaded shaft, providing a fastening solution for suitable mechanical assemblies, equipment installations and mounting applications.

The external hexagonal head allows the bolt to be tightened or removed using a matching wrench or socket. Its flat underside provides a bearing surface against the fastening component, while the metric thread is designed to engage with a compatible nut or internally threaded hole.

DIN 933 bolts are generally fully threaded, with the thread extending along the shaft beneath the head. This makes them suitable for fastening components of different thicknesses, provided the selected length and thread engagement are appropriate.

The Osculati catalogue identifies one exception within this range: part number A2-933-12X150 (M12x150 mm) is marked as partially threaded. Its construction should be considered when selecting a bolt for an application requiring a specific threaded length.

A2 (AISI 304) stainless steel offers corrosion resistance for general indoor, outdoor and suitable marine applications. For installations exposed to high chloride concentrations or continuous saltwater contact, the suitability of the material should be assessed.

The range includes 46 dimensional configurations across six nominal thread sizes: M4, M5, M6, M8, M10 and M12. Available lengths range from 12 to 150 mm, depending on the selected thread diameter. Each version has an individual Osculati part number and is supplied in a cardboard box with a specified quantity.

Technical Specifications

Brand	Osculati
Product Type	Hexagon Head Bolt / Hex Head Machine Screw
Standards	DIN 933 / UNI 5739
Material	A2 / AISI 304 Stainless Steel
Head Type	External Hexagonal Head
Drive Type	External Hexagon, Wrench or Socket
Thread Type	Metric
Threading	Fully Threaded, Except Listed M12x150 Variant
Available Thread Sizes	M4, M5, M6, M8, M10, M12
Available Length Range	12–150 mm
Box Quantities	5, 10, 25, 50, 100 pcs
Packaging	Cardboard Box
Number of Variants	46
Dimensions Format	Nominal Thread Diameter × Bolt Length

Features and Applications

Manufactured from A2 (AISI 304) stainless steel.
Hexagonal head design for installation using a suitable wrench or socket.
Metric threaded shaft for use with compatible nuts or tapped holes.
Generally fully threaded design according to DIN 933.
M12x150 mm variant specifically listed as partially threaded.
Suitable for appropriate mechanical assemblies, mounting brackets, equipment fittings and general fastening applications.
Available in six nominal metric thread sizes from M4 to M12.
Supplied in cardboard boxes containing 5 to 100 bolts, depending on size.

Available Sizes and Part Numbers

Thread Size	Length	Box Quantity	Osculati Part No.
M4	12 mm	100 pcs	A2-933-04X012
M4	20 mm	100 pcs	A2-933-04X020
M4	30 mm	100 pcs	A2-933-04X030
M4	40 mm	50 pcs	A2-933-04X040
M5	16 mm	100 pcs	A2-933-05X016
M5	20 mm	100 pcs	A2-933-05X020
M5	30 mm	100 pcs	A2-933-05X030
M5	40 mm	50 pcs	A2-933-05X040
M5	50 mm	50 pcs	A2-933-05X050
M6	16 mm	100 pcs	A2-933-06X016
M6	20 mm	100 pcs	A2-933-06X020
M6	25 mm	100 pcs	A2-933-06X025
M6	30 mm	50 pcs	A2-933-06X030
M6	35 mm	50 pcs	A2-933-06X035
M6	40 mm	50 pcs	A2-933-06X040
M6	45 mm	50 pcs	A2-933-06X045
M6	50 mm	50 pcs	A2-933-06X050
M6	55 mm	25 pcs	A2-933-06X055
M6	60 mm	25 pcs	A2-933-06X060
M6	65 mm	25 pcs	A2-933-06X065
M6	70 mm	25 pcs	A2-933-06X070
M6	75 mm	25 pcs	A2-933-06X075
M6	80 mm	25 pcs	A2-933-06X080
M6	100 mm	10 pcs	A2-933-06X100
M8	25 mm	25 pcs	A2-933-08X025
M8	30 mm	25 pcs	A2-933-08X030
M8	40 mm	25 pcs	A2-933-08X040
M8	50 mm	25 pcs	A2-933-08X050
M8	60 mm	25 pcs	A2-933-08X060
M8	70 mm	25 pcs	A2-933-08X070
M8	80 mm	25 pcs	A2-933-08X080
M8	100 mm	10 pcs	A2-933-08X100
M8	120 mm	10 pcs	A2-933-08X120
M10	40 mm	25 pcs	A2-933-10X040
M10	50 mm	25 pcs	A2-933-10X050
M10	60 mm	25 pcs	A2-933-10X060
M10	80 mm	10 pcs	A2-933-10X080
M10	100 mm	10 pcs	A2-933-10X100
M10	120 mm	10 pcs	A2-933-10X120
M12	45 mm	25 pcs	A2-933-12X045
M12	60 mm	10 pcs	A2-933-12X060
M12	80 mm	10 pcs	A2-933-12X080
M12	100 mm	10 pcs	A2-933-12X100
M12	120 mm	5 pcs	A2-933-12X120
M12	150 mm	5 pcs	A2-933-12X150

Size Selection

Select the nominal thread size and bolt length according to the dimensions of the components being fastened and the required thread engagement. Ensure that the selected bolt is compatible with the corresponding nut or tapped hole.

Available lengths vary by thread size. Each dimensional configuration has a fixed box quantity, as shown in the table above.

Please note that the M12x150 mm version (A2-933-12X150) is listed as partially threaded. Exact thread pitch, strength class, wrench size and threaded section length are not specified in the supplied catalogue information.