Countersunk cap screw(TKS(Tokosha(Coarse Steel Unplated 6 X 15 Pitch 1.0

※For flat head (countersunk) screws, the total length including the head is the nominal length.

Please contact us if you need to verify the threaded section.



■Hex Socket Countersunk Head Bolt -JIS B 1194-
The countersunk head profile allows use in applications where protrusion is a concern. It provides greater tightening force than slotted bolts.
Also, as with hex socket button head bolts, the hex socket size is slightly smaller than that of standard hex socket head cap screws. It is also known as a countersunk cap screw. Features: A bolt with a cylindrical head containing a hexagonal socket. Tightening is performed using a hex key (Allen wrench).
Although classified as a bolt, it is in most cases used without a nut. It is also referred to as a cap screw or socket screw.
Open-end spanners and wrenches used to tighten hex bolts require clearance space around the fastener, whereas a hex key requires no such clearance. This makes hex socket head cap screws ideal for work in confined spaces and for the miniaturization of machinery.

• Countersunk cap screw TKS Tokosha Coarse pitch
• Nominal diameter (d) M6
• Length (ℓ) 15.0
• Pitch 1.0
• Body diameter (ds) Nominal - Tolerance -
• Head diameter (dk) Nominal 12 Tolerance 0,-0.43
• Head height (k) Nominal 3.3 Tolerance 0,-0.18
• Hex socket width across flats (s) Nominal 4 Tolerance +0.105,+0.030
• Hex socket depth (t) Nominal 2.5 Tolerance 0,-0.3
• Note:
• Standard dimensions for M3 to M6 per SSS-002-1977
• Screw point form for bolts M6 and below shall be chamfered point
• Hex socket chamfer for M6 and below shall have no chamfer