Standard alternative instructions for bolts and nuts

1. Bolts

-- Square head bolt Class C UDC 621.882.6 | GB 8-88 | replaces GB8-76
Square head bolts-Product grade C

Countersunk head square neck bolt UDC 621.882.6 | GB 10-88 | instead of GB10-76
Flat countersunk square neck bolts

-- Countersunk head with mortising screw UDC 621.882.6 | GB 11-88 | instead of GB11-76
Flat countersunk nib bolts

-- Half round head square neck bolt UDC 621.882.6 | GB 12-88 | instead of GB12-76
Cup head square neck bolts

-- Half round head with tenon bolt UDC 621.882.6 | GB 13-88 | instead of GB13-76
Cup head nid bolts

- Large half round head square neck bolts - Class C ISO 8677:1986 | GB 14-1998 | replaces GB14-88
Cup head square neck bolts with large head-Product grade C

-- Large half round head with tenon bolt UDC 621.882.6 | GB 15-88 | instead of GB15-76
Cup head nib bolts with large head

-- Replace GB27-76 with bolts UDC 621.882.6 | GB 27-88 | for hexagonal head reaming holes
Hexagon fit bolts-product grade A and B

-- Hexagon head screw with hole reaming bolt UDC 621.882.6 | GB 28-88 | instead of GB28-76
Hexagon fit bolts with split pin hole on shank-product grade A and B

-- Hexagon head head slotted bolts Class A and B UDC 621.882.6 | GB 29.1-88 | instead of GB29-76
Hexagon bolts with slot on head -product A and B

Cross recessed hexagon head bolt UDC 621.882.6 | GB 29.2-88 | instead of GB29-76
Cross recessed hexagon bolts with indentation

-- Hexagon head screw bolt with hole UDC 621.882.6 | GB 31.1-88 | replaces GB31, 23, 24-76
Hexagon bolts with split pin hole on shank-product grade A and B

-- Hexagon head screw with hole bolt thin rod Class B UDC 621.882.6 | GB 31.2-88 | instead of GB31, 23, 24-76
Hexagon bolts with split pin hole on shank-Reduced shank-product grade B

-- Hexagon head screw with hole bolts fine teeth A and B UDC 621.882.6 | GB 31.3-88 | instead of GB31, 23, 24-76
Hexagon bolts with split pin hole on shank-Fine pitch thread-product grade Aand B

-- Hexagon head bolts with holes in the head class A and B UDC 621.882.6 | GB 32.1-88 | replaces GB32, 25, 26-76
Hexagon bolts with wire holes on head-product grade A and B

-- Hexagon head head with hole bolt thin rod Class B UDC 621.882.6 | GB 32.2-88 | instead of GB32, 25, 26-76
Hexagon bolts with wire holes on head-Reduced shank-product grade B

-- Hexagon head bolts with holes in the head fine teeth Class A and B UDC 621.882.6 | GB 32.3-88 | replaces GB32, 25, 26-76
Hexagon bolts with wire holes on head-Fine pitch thread-product grade A and B

-- Lower square head bolt Class B UDC 621.882.6 | GB 35-88 | replaces GB35-76
Square head bolts with small head-praduct grade B

-- Replace GB37-76 with bolt UDC 621.882.6 | GB 37-88 | for T-slot

Bolts for T-Slot

-- Reinforced half round head square neck bolt GB /T794-93 | instead of GB794-67
Strengthened cup head square neck bolts

-- Live bolt UDC 621.882.6 | GB 798-88 | instead of GB798-76
Eye bolts

-- Anchor bolt UDC 621.882.6 | GB 799-88 | replaces GB799-76
Eyelet bolts

-- Countersunk double mortised screw UDC 621.882.6 | GB 800-88 | instead of GB800-77
Flat countersunk double nib bolts

Small semi-round head low square neck bolts - Class B ISO 8678:1988 | GB /T 801-1998 | replaces GB801-88
Cup head square neck bolts with small head and short neck-product grade B

Hexagon head bolts - Class C ISO 4016:1999 | GB/T 5780-2000 | replaces GB/T 5780-1986
Hexagon head bolts-product grade C

- Hexagon head bolts, full thread, class C ISO 4018:1999 | GB/T 5781-2000 | replaces GB/T 5781-1986
Hexagon head bolts-Full thread-product grade C

Hexagon head bolts ISO 4014:1999 | GB/T 5782-2000 | replaces GB/T 5782-1986
Hexagon head bolts

-- Hexagon head bolts with full thread ISO 4017:1999 | GB/T 5783-2000 | replaces GB/T 5783-1986
Hexagon head bolts-Full thread

- Hexagon head bolt - Thin rod - Class B UDC 621.882.6 | GB 5784-86 | instead of GB30, 21-76
Hexagon head bolts-Reduced shank -Product grade B

Fine teeth for hexagon head bolts ISO 8765:1999 | GB/T 5785-2000 | replaces GB/T 5785-1986
Hexagon head bolts with fine pitch thread

ISO 8676:1999 | GB/T 5786-2000 | replaces GB/T 5786-1986
Hexagon head bolts with fine pitch thread-Full thread

Hexagon Flange bolts - Large Series - Class B UDC 621.882.6 | GB 5789-86 |
Hexagon flange bolts-Heavy series-product grade B

Hexagon flange bolts - Extended series - Thin rod - Class B UDC 621.882.6 | GB 5790-86 |
Hexagon flange bolts-Heavy series-product grade B

Hexagon flange bolts small series ISO 4162:1990 | GB/T 16674-1996 | instead of GB/T 5787, 5788-1986
Hexagon flange bolts-Small series

-- High strength bolts GB /T 16939-1997 | for steel grid bolt ball joints
High strength bolts for joints of space grid structures

2. Nut

-- Square nut Class C UDC 621.882.3 | GB 39-88 | replaces GB39-76
Square nuts-product grade C

Hexagon nuts, class C ISO 4034:1999 | GB/ T41-2000 | replaces GB/T 41-1986
Hexagon nuts-product grade C

Thick hexagon nuts ISO 621.882.3 | GB 56-88 | instead of GB56-76
Hexagon thick nuts

-- Butterfly nut UDC 621.882.3 | GB 62-88 | replaces GB62-76
Wing nuts

-- Ring nut UDC 621.882.3 | GB 63-88 | replaces GB63-76
Lifting nuts

-- Combined cap nut UDC 621.882.3 | GB 802-88 | replaces GB802-76
Acorn nuts

-- Spherical hexagon nut UDC 621.882.3 | GB 804-88 | replaces GB804-76
Hexagon nuts with raised face

-- Buckle nut UDC 621.882.3 | GB 805-88 | replaces GB805-76
Tight nuts

-- Knurled high nut UDC 621.882.3 | GB 806-88 | replaces GB806-76
Knurled nut with collar

-- Thin knurled nut UDC 621.882.3 | GB 807-88 | replaces GB807-76
Knurled nuts

-- Small hexagonal extra-flat fine tooth nut UDC 621.882.3 | GB 808-88 | replaces GB808-76
Small hexagon thin nuts-Fine pitch thread

-- Insert round nut UDC 621.882.3 | GB 809-88 | instead of GB809-76
Lnsert round nuts

-- Small round nut UDC 621.882.3 | GB 810-88 | replaces GB810-76
Small round nuts

Round nut UDC 621.882.3 | GB 812-88 | replaces GB812-76
Round nuts

-- Round nut with hole in end face UDC 621.882.3 | GB 815-88 | replaces GB815-76
Round nuts with drilled holes in one face

-- Round nut with holes on sides UDC 621.882.3 | GB 816-88 | replaces GB816-79
Round nuts with set pin holes in side

-- Round nut with slot UDC 621.882.3 | GB 817-88 | replaces GB817-76

Slotted round nuts

Hexagon lock nuts for non-metal inserts type 1 ISO 7040:1997 | GB/T 889.1-2000 | replaces GB/T 889-1986
Prevailing torque type hexagon nuts(with non-metallic insert),style 1

ISO 1052:1997 | GB/T 889.2-2000 |, non-metal insert type 1, fine teeth for hexagon lock nuts
Prevailing torque type hexagon nuts(with non-metallic insert),style 1,with finepitch thread

-- Cap nut UDC 621.882.3 | GB