MACHINE SCREW – HEX FLANGE HEAD
DIN 6921/ ASME B 18.2.1

Thread Type : A straight shank fastener with external threads designed to travel through a hole or nut that’s pre-tapped to make a mating thread for the screw.

| CODE | SPEC (DIA) | SPEC (LENGTH) | WIDTH ACROSS FLATS | HEAD HEIGHT | FLANGE DIA | DRIVE | MATERIAL | FINISHING |
| STMSHF | #10 | 3/8″ / 1/2″ / 5/8″ / 3/4′ / 1″ | 5/16″ | 7/32″ | 29/64″ | hex | Steel / Stainless Steel / Brass | Zinc Clear Trivalent Cr3+ / Passivated / Black Zinc Plated / Green Zinc Plated |
| STMSHF | #1/4 | 3/8″ / 1/2″ / 5/8″ / 3/4′ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ | 3/8″ | 9/32″ | 9/16″ | hex | ||
| STMSHF | #5/16 | 1/2″ / 5/8″ / 3/4′ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ | 1/2″ | 21/64″ | 11/16″ | hex | ||
| STMSHF | #3/8 | 1/2″ / 5/8″ / 3/4′ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/2″ | 9/16″ | 25/64″ | 13/16″ | hex | ||
| STMSHF | #1/2 | 3/4′ / 1″ / 1-1/4″ / 1-1/2″ / 1-3/4″ / 2″ / 2-1/2″ | 3/4″ | 33/64″ | 1-5/64″ | hex | ||
| STMSHF | M5 | 10/12/16/20/25/30/35/40/45/50 | 7.78-8 | 5.4 | 11.8 | hex | Steel / Stainless Steel / Brass | Zinc Clear Trivalent Cr3+ / Passivated / Black Zinc Plated / Green Zinc Plated |
| STMSHF | M8 | 16/20/25/30/35/40/45/50/55/60/65/70/80 | 12.73-13 | 8.1 | 18 | hex | ||
| STMSHF | M10 | 20/25/30/35/40/45/50/55/60/65/70/80/90/100 | 14.73-15 | 9.2 | 22.3 | hex | ||
| STMSHF | M12 | 25/30/35/40/45/50/55/60/65/70/80/90/100/110/120 | 15.73-16 | 11.5 | 26.6 | hex | ||
| STMSHF | M14 | 30/35/40/45/50/55/60/65/70/80/90/100/110/120/130/140 | 17.73-18 | 12.8 | 30.5 | hex | ||
| STMSHF | M16 | 35/40/45/50/55/60/65/70/80/90/100/110/120/130/140/150/160 | 20.67-21 | 14.4 | 35 | hex | ||
| STMSHF | M20 | 40/45/50/55/60/65/70/80/90/100/110/120/130/140/150/160/180/200 | 26.67-27 | 17.1 | 43 | hex |