ButtonHex socket head cap screw(HSK(Hikari Seiko(JIS(Coarse Stainless steel Unplated 8 X 35 Pitch 1.25
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JIS B 1174
A hex socket button bolt characterized by its rounded head shape.
Also known as a button cap screw.
Compared to a hex socket head cap screw of the same size, the hex socket is smaller.
There are two types of button cap screws: the "3S Standard," an industry association standard (cooperative standard) that was adopted earlier, and the "JIS Standard," which was later established in accordance with ISO. The two types differ in head dimensions.
3S Standard (Manufacturers: Tokosha Kinzoku SS, Goshō SS, Chubu Rashi, Kyokuto SS, Ansco (Maruco))
JIS Standard (Manufacturers: Nissan Neji, Ansco, Alps Seiko)
Button CAP Standard Comparison Screw Pitch List
JIS B 1174
A hex socket button bolt characterized by its rounded head shape.
Also known as a button cap screw.
Compared to a hex socket head cap screw of the same size, the hex socket is smaller.
There are two types of button cap screws: the "3S Standard," an industry association standard (cooperative standard) that was adopted earlier, and the "JIS Standard," which was later established in accordance with ISO. The two types differ in head dimensions.
3S Standard (Manufacturers: Tokosha Kinzoku SS, Goshō SS, Chubu Rashi, Kyokuto SS, Ansco (Maruco))
JIS Standard (Manufacturers: Nissan Neji, Ansco, Alps Seiko)
Button CAP Standard Comparison Screw Pitch List
Product Details
- Button cap screw HSK Hikari Seiko JIS Coarse pitch
- JIS B 1174
- Nominal diameter (d) M8
- Length under head (L) 35.0
- Pitch 1.25
- Head diameter (dk) Max 14.00 Min 13.57
- Head height (K) Max 4.40 Min 4.10
- Hex socket width across flats (S) Nominal 5 Max 5.140 Min 5.020
- Hex socket depth (t) Min 2.60
ButtonHex socket head cap screw(HSK(Hikari Seiko(JIS(Coarse Stainless steel Unplated 8 X 35 Pitch 1.25
| Stainless steel | Unplated | 8 X 35 | Individual sale | View Details |
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