Brass Nuts  Hex Nuts, Brass Full Nuts, Hex Brass Lock Nuts, Hex Rivet Nut, 
Brass Square Nuts, Brass Wing Nuts, BS 3692, DIN 934, BS 57, IS/1363, IS/1367, Free Cutting Brass
Brass Water Tank Connectors
Brass Standoffs
Brass Spacers
Brass Nuts
Brass Screws
Brass Lock Nuts
Brass Fasteners
Brass Machine Screws
Brass Electronic Hardware
Brass Bolts Hex Bolts
Brass Plastic Moulding Inserts
Brass Parts India
Brass Components
Brass Moulding Inserts
Brass Molding Inserts
Brass BSP NPT Threaded Inserts
Brass Cross Knurled Inserts
Brass Helical Knurled Inserts
Brass Press Lock Type Inserts
Brass Self Tapping Inserts
Brass Straight Knurled Inserts
Brass Tappex Type Inserts
Brass Male Female CPVC UPVC Fittings
Brass Male Female Inserts for PPR Fittings

Brass Square Nuts Din 557 

d1 s e m
M5 8 11.3 4
M6 10 14.1 5
M8 13 18.4 6.5
M10 16 22.6 8
M12 18 25.4 10
M16 24 33.9 13
Materials BS 2874 - CZ 121 Pb3 CZ 122 UNS C36000 CDA 360 DZR Brass BS 2874 - CZ 131  CW 614 N EN 12164 BS 2874 - CZ 114 BS 2874 - CZ 115
Finishes Zinc, Cadmium, Nickel Silver & Chrome Plating, Black Oxide, Anodize, Passivation and Heat Treating.

Square Nuts are four-sided with a flat bottom side and a chamfered, washer-crowned top.

A square nut is designed for use with square bolts.