ButtonHex socket head cap screw(Okitsu Rasen(JIS(Coarse Stainless steel Unplated 4 X 15 Pitch 0.7

※For countersunk screws, the overall length including the head is the nominal length.

■Difference between SUS410 and stainless steel (XM7, 304).

A wing bolt (butterfly bolt) is a bolt with a wing-shaped head that can be tightened or loosened by hand without the use of tools. They are classified into 1 to 3 types depending on the shape of the head. The thread is coarse thread. · Press wing bolt···The wings (knob portion) of the head are manufactured by press forming.

• Button cap bolt Okitsu Rasen JIS Coarse pitch
• JIS B 1174
• Nominal diameter (d) M4
• Length under head (L) 15.0
• Coarse pitch 0.7
• Head diameter (dk) Max 7.60 Min 7.24
• Head height (k) Max 2.20 Min 1.95
• Hex socket width across flats (s) Nominal 2.5 Max 2.580 Min 2.520
• Hex socket depth (t) Min 1.30