MAEDLER Shoulder Bolts / Reamer Bolts（Material：Steel）

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Socket Shoulder Screws Similar ISO 7379, Steel

MAEDLER

Material: Steel strength 12.9, partially black oxide finish.
Screws with precision fit cylinder for multiple usage.
These screws have the usual differences to the norm ISO 7379, like it is common on the market.

Note:
These screws have the usual differences to the norm ISO 7379, like it is common on the market:
- Ø 4 mm and Ø 5 mm are not included in the ISO.
- Ø 6 mm instead of ISO Ø 6.5 mm.
- Ø 12 mm instead of ISO Ø 13 mm.
- Ø 24 mm instead of ISO Ø 25 mm.
- Concentricity 2 IT 13 and 2 IT 10 may vary.
- The stainless steel version is not included in the ISO. Due to thematerial, the strenght is lower.

Fastening Torque:
Because of the small contact areas and the recesses, the tightening torque is much smaller than the torque for a standard bolt with strength 12.9 of the same thread size. Also, the strength of the contact areas of the corresponding parts must be considered.
* At screw 12.9, the height of head is 8 mm.

Volume Discount

Starting from^∗ ：	0.80 €
Min. Shipping Days ：	4 Days

*Unit price with basic configuration


Brand
Product Series
Starting from^∗
Min. Shipping Days ：
Detailed Shape
Screw Nominal (M)
Length L (mm)(mm)
Length L (inch)(inch)
Material
Surface Treatment
Mounting Hole Shape
Pitch(mm)
Strength Class (Steel)
Strength Class (Stainless Steel)
Thread Type
Basic Shape
Sales Unit
Screw Nominal (inch)
Application
Thread Length E(inch)
Technical Standard


Brand	MAEDLER
Product Series	Socket Shoulder Screws Similar ISO 7379, Steel
Starting from^∗	0.80 € *Unit price with basic configuration Volume Discount
Min. Shipping Days ：	4 Days
Detailed Shape	-
Screw Nominal (M)	M 3 ～ M 20
Length L (mm)(mm)	-
Length L (inch)(inch)	-
Material	Steel
Surface Treatment	Black Oxide
Mounting Hole Shape	-
Pitch(mm)	-
Strength Class (Steel)	12.9
Strength Class (Stainless Steel)	-
Thread Type	-
Basic Shape	-
Sales Unit	-
Screw Nominal (inch)	-
Application	-
Thread Length E(inch)	-
Technical Standard	-

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Screw Nominal (M)
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M 3

4

M 4

5

M 5

6

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10

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12

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30
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Length L (mm)(mm)
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Length L (inch)(inch)
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3/4

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Material
Stainless Steel

Steel
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Surface Treatment
- Not Provided
- Black Oxide
- Black Oxide
- Electroless Nickel Plating
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Mounting Hole Shape
- Hex Socket
- Cross Recessed
- Negative
- Not Provided
- With Cross/Straight Slot
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Pitch(mm)
0.45

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1

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2.5
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Strength Class (Steel)
4.8

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9.8 Equivalent

10.9

12.9
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Strength Class (Stainless Steel)
A2-90

A2-50
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Thread Type
- Metric Coarse
- Unify Coarse Thread UNC
- Unify Fine Thread UNF
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Basic Shape
- Standard (Round)
- Hex
- Shoulder, Stepped Screws
- Reamers
- Other Screws
- Related Components
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Sales Unit
Low Quantity (Available beginning with 1 pc.)

Box, Pkg.
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Screw Nominal (inch)
1/4

3/8

No. 4

No. 8

No. 10
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Application
- Standard
- High Strength
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Thread Length E(inch)
0.157

0.189

0.375

0.438

0.625
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