Metric Hex Cap Screws Distributor - Bulk Metric Hex Bolts

Bulk Metric Hex Bolts

As a leading metric hex cap screws distributor, Bayou City Bolt has metric hex cap screws and bulk metric hex bolts in stock and ready to order.

Inch Size Coarse(UNC) Fine(UNF)	Decimal Equivalent	Closest Metric Size	Decimal Conversion
1/4-20	.250	M6 X 1.0	.236"
1/4-28	.250	M6 X .075	.236
5/16-18	.3125	M8 X 1.25	.315
5/16-24	.3125	M8 X 1.0	.315
3/8-16	.375	M10 X 1.5	.394
3/8-24	.375	M10 X 1.25	.394
7/16-14	.4375
7/16-20	.4375
1/2-13	.500	M12 X 1.75	.472
1/2-20	.500	M12 X 1.25	.472
9/16-12	.5625	M14 X 2.0	.551
9/16-18	.5625	M14 X 1.5	.551
5/8-11	.625	M16 X 2.0	.630
5/8-18	.625	M16 X 1.5	.630
3/4-10	.750	M20 X 2.5	.787
3/4-16	.750	M20 X 1.5	.787
7/8-9	.875	M22 X 2.5	.866
7/8-14	.875	M22 X 1.5	.866
1-8	1.00	M24 X 3.0	.945
1-12	1.00	M24 X 2.0	.945
1-14	1.00
1 1/8-7	1.125
1 1/8-12	1.125
1 1/4-7	1.25	M30 X3.5	1.181
1 1/4-12	1.25	M30 X 2.0	1.181

Bolt Diameter (mm)	ANSI/ISO	DIN	DIN/ISO Heavy Hex
4	7	7
5	8	8
6	10	10
7		11
8	13	13
10	16	17
12	18	19	22/21
14	21	22
16	24	24	27
18		27
20	30	30	34/32

Tap	Drill Bit Size (Optional Fractional)
3mm x 0.50	2.5 mm
4 x 0.70	3.4
5 x 0.80	4.3
6 x 1.00	5.2
7 x 1.00	6.1 (15/64)
8 x 1.25	6.9 (17/64)
8 x 1.00	7.1
10 x 1.50	8.7
10 x 1.25	8.9 (11/32)
10 x 1.00	9.1
12 x 1.75	10.5
12 x 1.50	10.7 (27/64)
14 x 2.00	12.2
14 x 1.50	12.7
16 x 2.00	14.2 (35/64)
16 x 1.50	14.7

Metric Grade	Tensile Strength (Mpa) (Min)	Yield Strength, min, (Mpa)	Full Size Proofload, (Mpa)	Material	Treatment
Class 8.8 < 16mm	800	640	580	Carbon Steel	Quenched & Tempered
Class 8.8 > 16mm	830	660	600
Class 10.9	1040	940	830	Alloy Steel	Quenched & Tempered
Classs 12.9	1220	1100	970	Alloy Steel	Quenched & Tempered

Nominal Diameter Of Thread d(mm)	Pitch	Nominal Stress Area	Property Class
	P(mm)	As(mm2)	4.6	8.8	10.9	12.9
			Proof Load (As . Ap),N
3	0.5	5.03	1130	2920	4180	4880
3.5	0.6	6.78	1530	3940	5630	6580
4	0.7	8.78	1980	5100	7290	8520
5	0.8	14.2	3200	8230	11800	13800
6	1	20.1	4520	11600	16700	19500
7	1	28.9	6500	16800	24000	28000
8	1.25	36.6	8240	21200	30400	35500
10	1.5	58	13000	33700	48100	56300
12	1.75	84.3	19000	48900¹⁾	70000	81800
14	2	115	25900	66700¹⁾	95500	112000
16	2	157	35300	91000¹⁾	130000	152000
18	2.5	192	43200	11500	159000	186000
20	2.5	245	55100	147000	203000	238000
22	2.5	303	68200	182000	252000	294000
24	3	353	79400	212000	293000	342000
27	3	459	103000	275000	381000	445000
30	3.5	561	126000	337000	466000	544000
33	3.5	694	156000	416000	570000	673000
36	4	817	184000	490000	678000	792000
39	4	976	220000	586000		947000

TENSILE STRENGTH

Tensile Strength: The maximum load in tension (pulling apart) which a material can withstand before breaking or fracturing.

Yield Strength: The load at which a material exhibits a specific permanent deformation.

Proof Load: An axial tensile load which the product must withstand without evidence of any permanent set.

1MPa = 1N/mm2 = 145 pounds/inch2