DIN 787 T-slot Screw

DIN 787 covers screws with an unusual square head and a neck shaped as a truncated cone.

The base diameter of the neck slightly exceeds the diameter of the metal shank.

Metric thread is cut over 2/3 of the shank length, with diameters ranging from M8 to M24. The fastener corresponds to the international equivalent under ISO 299 — the overall configuration and purpose match.

Manufacturing and application features

The material is hardened and tempered steel of property class 12.9, which withstands high mechanical loads. As a rule, the screws are supplied without additional protective coating. For environments with high corrosion activity, screws made of A2 and A4 stainless steel, as well as brass and other non-ferrous alloys, are used.

The square-head screw under DIN 787 is designed for installation into pre-machined T-slots on production machine tools, industrial equipment and other units. It is a narrowly specialized fastener for joining machine tool parts. It is most commonly used in machine tool building, instrument making and mechanical engineering.

Ordering terms on the FLOK website

FLOK supplies DIN 787 screws in wholesale batches of any volume. Choose the suitable option from the catalogue and place your order online.

Dimensions of DIN 787 T-slot screws, mm:

d	a -0.3/-0.5	l - b	l - b	l - b	l - b	e	k
M6	6	25 - 15	40 - 28	63 - 40	-	10-0.5	4-0.5
M8	8	32 - 22	50 - 35	80 - 50	-	13	6
M10	10	40 - 30	63 - 45	100 - 60	-	15	6
M12	12	50 - 35	80 - 55	125 - 75	200 - 120	18	7
M12	14	50 - 35	80 - 55	125 - 75	200 - 120	22	8
M16	18	63 - 45	100 - 63	160 - 100	250 - 150	28	10
M20	22	80 - 55	125 - 85	200 - 125	-	35	14
M24	28	100 - 70	160 - 110	250 - 150	-	44-1	18-1