BS 4882

ASTM A193 Grade B7 Specifications

Dimensions for Metric Full Threaded Studs

Nominal Size			Nominal Length, L^T
Diameter, D	Pitch, P	U _max = 2P	Range	Increments
M5	0.8	1.6	12-20	4
			25-50	5
			60-160	10
			≥ 180	20
M6	1	2.0	16-20	4
			25-50	5
			60-160	10
			≥ 180	20
M8	1.25	2.5	25-50	5
			60-160	10
			≥ 180	20
M10	1.5	3.0	30-50	5
			60-160	10
			≥ 180	20
M12	1.75	3.5	40-50	5
			60-160	10
			≥ 180	20
M14	2	4.0	60-160	10
M14	2	4.0	≥ 180	20
M16	2	4.0	60-160	10
M16	2	4.0	≥ 180	20
M20	2.5	5.0	60-160	10
M20	2.5	5.0	≥ 180	20
M22	2.5	5.0	60-160	10
M22	2.5	5.0	≥ 180	20
M24	3	6.0	70-160	10
M24	3	6.0	≥ 180	20
M27	3	6.0	80-160	10
M27	3	6.0	≥ 180	20
M30	3.5	7.0	90-160	10
M30	3.5	7.0	≥ 180	20
M36	4	8.0	110-160	10
M36	4	8.0	≥ 180	20
M42	4.5	9.0	120-160	10
M42	4.5	9.0	≥ 180	20
M48	5	10.0	150-160	10
M48	5	10.0	≥ 180	20
M56	5.5	11.0	≥ 180	20
M64	6	12.0	≥ 180	20
M72, M80, M90, and M100	6	12.0	≥ 200	20

General Note :All dimensions are in millimeters unless otherwise indicated

Length Tolerances: LT for Metric Full Threaded Stud Bolts

Nominal Size		Length Tolerance(mm)
Over	Through	Length Tolerance(mm)
6	10	± 0.45
10	18	± 0.55
18	30	± 0.65
30	50	± 0.80
50	80	± 1.50
80	120	± 1.75
120	180	± 2.00
180	250	± 2.30
250	315	± 2.60
315	400	± 2.85
400	500	± 3.15
> 500	...	± 10.00

ASTM A193 Grade B7 Fastener Coatings

PTFE Coated B7 Fasteners

PTFE Coated

Black Phosphated B7 Fasteners

Black Phosphated

Zinc Plated B7 Fasteners

Zinc Plated

Hot Dip Galvanized B7 Fasteners

Hot Dip Galvanized

Cadium Plated B7 Fasteners

Cadium Plated

Ceramic Coated B7 Fasteners

Ceramic Coated

Zinc Nickel B7 Fasteners

Zinc Nickel

Zinc Flake Coated B7 Fasteners

Zinc Flake Coated