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Table of Content

What is Fasteners?
Bolt Standard Sizes
Fasteners Types
Sizes Of Stud Bolt
Hex Bolt Dimensions Chart

What is Fasteners?

Fasteners are universal components, hardware devices that are used for non-permanent joining of two or more objects together.There are many materials that are used for manufacturing the fasteners. Such as carbon steel, alloy steel, stainless steel, aluminum and plastic. Common fasteners include screws, bolts, nuts and rivets.

Stainless Steel Fasteners

Inconel Fasteners

Hastelloy Fasteners

Carbon steel Fasteners

Alloy Steel Fasteners

Duplex Steel fasteners

Super Duplex Steel fasteners

Monel Fasteners

Silicon Bronze Fasteners

Nickel Alloy Fasteners

Bolt Standard Sizes

ASTM Specifications for Bolt Fasteners

A193	- Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
A307	- Carbon steel bolts and studs, 60,000 psi tensile strength.
A320	- Alloy steel and stainless steel bolting materials for low temperature service.
A325	- Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
A354	- Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
A449	- Quenched and tempered steel bolts and studs for general use.
A490	- Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
F568	- Standard for metric bolts, screws and studs that are used in general engineering applications
F593	- Stainless steel bolts, hex cap screws, and studs.
F1554	- Anchor bolts designed to anchor structural supports to concrete foundations.

ASTM Satndards Nut Fasteners

A194	- Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service
A563	- Standard Specification for Wrought Cobalt-20Nickel-20Chromium-3.5Molybdenum-3.5Tungsten-5Iron Alloy for Surgical Implant Applications
A594	- Standard Specification for Stainless Steel Nuts , Corrosive service applications
F467	- Standard Specification for Nonferrous Nuts for General Use , general use

ASTM Washer Specification

F436	- Specification for Hardened Steel Washers , carbon steel, steel, washers, weathering steel, Hardened steel washers
F844	- Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
F959	- Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

Fastener Types

Types Of Screw

Wood screws

Deck screws

Drywall screws

type4

Machine screws

Masonry screws

MDF screws

Types Of Nails

Common nails

Box nails

Brad nails

Finishing nails

Drywall nails

Flooring nails

Framing nails

Roofing nails

Different Types Of Bolts

Carriage bolts

Flange bolts

Plow bolts

Hex-head bolts

Square-head bolts

Allen bolts

Nut Types

Coupling nuts

Flange nuts

Hex nuts

Lock nuts

Slotted nuts

Square nuts

Wheel nuts

Types Of Washers

Beveled washers

Flat washers

Lock washers

Structural washers

Sizes Of Stud Bolt

Class 150 Flanges ASME B16.5 (Stud bolt sizes)						Length of Stud Bolts
NPS	Outside Diameter of Flange	The diameter of Bolt Circle	The diameter of Bolt Holes	Number of Bolts	Diameter of Bolts	Raised Face 0.06 in	Ring Joint
1/2	3 1/2	2 3/8	5/8	4	1/2	2 1/4	–
3/4	3 7/8	2 3/4	5/8	4	1/2	2 1/2	–
1	4 1/4	3 1/8	5/8	4	1/2	2 1/2	3
1 1/4	4 5/8	3 1/2	5/8	4	1/2	2 3/4	3 1/4
1 1/2	5	3 7/8	5/8	4	1/2	2 3/4	3 1/4
2	6	4 3/4	3/4	4	5/8	3 1/4	3 3/4
2 1/2	7	5 1/2	3/4	4	5/8	3 1/2	4
3	7 1/2	6	3/4	4	5/8	3 1/2	4
3 1/2	8 1/2	7	3/4	8	5/8	3 1/2	4
4	9	7 1/2	3/4	8	5/8	3 1/2	4
5	10	8 1/2	7/8	8	3/4	3 3/4	4 1/4
6	11	9 1/2	7/8	8	3/4	4	4 1/2
8	13 1/2	11 3/4	7/8	8	3/4	4 1/4	4 3/4
10	16	14 3/4	1	12	7/8	4 1/2	5
12	19	17	1	12	7/8	4 3/4	5 1/4
14	21	18 3/4	1 1/8	12	1	5 1/4	5 3/4
16	23 1/2	21 1/4	1 1/8	16	1	5 1/4	5 3/4
18	25	22 3/4	1 1/4	16	1 1/8	5 3/4	6 1/4
20	27 1/2	25	1 1/4	20	1 1/8	6 1/4	6 3/4
24	32	29 1/2	1 1/4	20	1 1/4	6 3/4	7 1/4
Class 300 Flanges ASME B16.5						Length of Stud Bolts
NPS	Outside Diameter of Flange	The diameter of Bolt Circle	The diameter of Bolt Holes	Number of Bolts	Diameter of Bolts	Raised Face 0.06 in	Ring Joint
1/2	3 3/4	2 5/8	5/8	4	1/2	2 1/2	3
3/4	4 5/8	3 1/4	3/4	4	5/8	3	3 1/2
1	4 7/8	3 1/2	3/4	4	5/8	3	3 1/2
1 1/4	5 1/4	3 7/8	3/4	4	5/8	3 1/4	3 3/4
1 1/2	6 1/8	4 1/2	7/8	4	3/4	3 1/2	4
2	6 1/2	5	3/4	8	5/8	3 1/2	4
2 1/2	7 1/2	5 7/8	7/8	8	3/4	4	4 1/2
3	8 1/4	6 5/8	7/8	8	3/4	4 1/4	4 3/4
3 1/2	9	7 1/4	7/8	8	3/4	4 1/4	5
4	10	7 7/8	7/8	8	3/4	4 1/2	5
5	11	9 1/4	7/8	8	3/4	4 3/4	5 1/4
6	12 1/2	10 5/8	7/8	12	3/4	4 3/4	5 1/2
8	15	13	1	12	7/8	5 1/2	6
10	17 1/2	15 1/4	1 1/8	16	1	6 1/4	6 3/4
12	20 1/2	17 3/4	1 1/4	16	1 1/8	6 3/4	7 1/4
14	23	20 1/4	1 1/4	20	1 1/8	7	7 1/2
16	25 1/2	22 1/2	1 3/8	20	1 1/4	7 1/2	8
18	28	24 3/4	1 3/8	24	1 1/4	7 3/4	8 1/4
20	30 1/2	27	1 3/8	24	1 1/4	8	8 3/4
24	36	32	1 5/8	24	1 1/2	9	10

ASTM Specifications for Bolt Fasteners

A193	- Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
A307	- Carbon steel bolts and studs, 60,000 psi tensile strength.
A320	- Alloy steel and stainless steel bolting materials for low temperature service.
A325	- Structural bolts, steel, heat treated, 120/105 ksi minimum tensile strength.
A354	- Quenched and tempered alloy bolts, studs, and other externally threaded fasteners.
A449	- Quenched and tempered steel bolts and studs for general use.
A490	- Structural bolts, alloy steel, heat treated, 150 ksi minimum tensile strength.
F568	- Standard for metric bolts, screws and studs that are used in general engineering applications
F593	- Stainless steel bolts, hex cap screws, and studs.
F1554	- Anchor bolts designed to anchor structural supports to concrete foundations.

ASTM Specifications for Nut Fasteners

A194	- Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service
A563	- Standard Specification for Wrought Cobalt-20Nickel-20Chromium-3.5Molybdenum-3.5Tungsten-5Iron Alloy for Surgical Implant Applications
A594	- Standard Specification for Stainless Steel Nuts , Corrosive service applications
F467	- Standard Specification for Nonferrous Nuts for General Use , general use

ASTM Specifications for Washers

F436	- Specification for Hardened Steel Washers , carbon steel, steel, washers, weathering steel, Hardened steel washers
F844	- Standard Specification for Washers, Steel, Plain (Flat), Unhardened for General Use
F959	- Standard Specification for Compressible-Washer-Type Direct Tension Indicators for Use with Structural Fasteners

Hex Bolt Dimensions Chart

Metric Hex Bolt Dimensions

NOMINAL SIZE (D)	BODY DIAMETER		HEAD THICKNESS		ACROSS THE FLATS		ACROSS CORNERS
	D (MAX)	D (MIN)	H (MAX)	H (MIN)	F (MAX)	F (MIN)	C (MAX)	C (MIN)
m10	10.00	9.78	6.63	6.17	17.00	15.73	18.48	17.77
m12	12.00	11.73	7.76	4.24	19.00	17.73	20.78	20.03
m14	14.00	13.73	9.09	8.51	22.00	20.67	24.25	23.35
m16	16.00	15.73	10.32	9.68	24.00	23.67	27.71	26.75
m20	20.00	19.67	12.88	12.12	30.00	29.16	34.64	32.95
m24	24.00	23.67	15.44	14.56	36.00	35.00	41.57	39.55
m30	30.00	29.67	19.48	17.92	46.00	45.00	53.12	50.85
m36	36.00	35.61	23.38	21.63	55.00	53.80	63.51	60.79
m42	42.00	41.38	26.97	25.03	65.00	62.90	75.06	71.71
m48	48.00	47.38	31.07	28.93	75.00	72.60	86.60	82.76
m56	56.00	55.26	36.2	33.80	85.00	82.20	98.15	93.71
m64	64.00	63.26	41.32	38.68	95.00	91.80	109.70	104.65
m72	72.00	71.26	46.45	43.55	105.00	101.40	121.24	115.60
m80	80.00	79.26	51.58	48.42	115.00	111.00	132.72	126.54
m90	90.00	89.13	57.74	54.26	130.00	125.50	150.11	143.07
m100	90.00	99.13	63.9	60.10	145.00	140.00	167.43	159.60

Hex Nut Dimensions

Size	Nominal (Major) Diameter [in]	Width Across Flats		Thickness
Size	Nominal (Major) Diameter [in]	Nominal [in]	Minimum [in]	Minimum [in]	Maximum [in]
#0	0.060	5/32"(0.156)	0.150	0.043	0.050
#2	0.086	3/16"(0.188)	0.180	0.057	0.066
#4	0.112	1/4"(0.250)	0.241	0.087	0.098
#6	0.138	5/16"(0.312)	0.302	0.102	0.114
#8	0.164	11/32"(0.344)	0.332	0.117	0.130
#10	0.190	3/8"(0.375)	0.362	0.117	0.130
1/4"	0.250	7/16"(0.438)	0.423	0.178	0.193
5/16"	0.312	9/16"(0.562)	0.545	0.208	0.225
3/8"	0.375	5/8"(0.625)	0.607	0.239	0.257

Flat Washer Dimensions

Size	Basic Dia. [in]	Series	Inner Dia, Basic [in]	Outer Dia, Basic [in]	Thickness, Basic [in]
#0	0.0600	---	0.078	0.188	0.020
#2	0.0860	---	0.094	0.250	0.020
#4	0.1120	---	0.125	0.312	0.032
#6	0.1380	---	0.156	0.375	0.049
#8	0.1640	---	0.188	0.438	0.049
#10	0.1900	---	0.219	0.500	0.049
1/4"	0.2500	Narrow	0.281	0.625	0.065
1/4"	0.2500	Wide	0.312	0.734	0.065
5/16"	0.3125	Narrow	0.344	0.688	0.065
5/16"	0.3125	Wide	0.375	0.875	0.083
3/8"	0.3750	Narrow	0.406	0.812	0.065
3/8"	0.3750	Wide	0.438	1.000	0.083
7/16"	0.4375	Narrow	0.469	0.922	0.065
7/16"	0.4375	Wide	0.500	1.250	0.083
1/2"	0.5000	Narrow	0.531	1.062	0.095
1/2"	0.5000	Wide	0.562	1.375	0.109
9/16"	0.5625	Narrow	0.594	1.156	0.095
9/16"	0.5625	Wide	0.625	1.469	0.109
5/8"	0.6250	Narrow	0.656	1.312	0.095
5/8"	0.6250	Wide	0.688	1.750	0.134
3/4"	0.7500	Narrow	0.812	1.469	0.134
3/4"	0.7500	Wide	0.812	2.000	0.148
7/8"	0.8750	Narrow	0.938	1.750	0.134
7/8"	0.8750	Wide	0.938	2.250	0.165
1"	1.0000	Narrow	1.062	2.000	0.134
1"	1.0000	Wide	1.062	2.500	0.165
1-1/8"	1.1250	Narrow	1.250	2.250	0.134
1-1/8"	1.1250	Wide	1.250	2.750	0.165
1-1/4"	1.2500	Narrow	1.375	2.500	0.165
1-1/4"	1.2500	Wide	1.375	3.000	0.165
1-3/8"	1.3750	Narrow	1.500	2.750	0.165
1-3/8"	1.3750	Wide	1.500	3.250	0.180
1-1/2"	1.5000	Narrow	1.625	3.000	0.165
1-1/2"	1.5000	Wide	1.625	3.500	0.180
1-5/8"	1.6250	---	1.750	3.750	0.180
1-3/4"	1.7500	---	1.875	4.000	0.180
1-7/8"	1.8750	---	2.000	4.250	0.180
2"	2.0000	---	2.125	4.500	0.180

Steel Fasteners Suppliers

What is Fasteners?

Bolt Standard Sizes

ASTM Specifications for Bolt Fasteners

ASTM Satndards Nut Fasteners

ASTM Washer Specification

Fastener Types

Types Of Screw

Types Of Nails

Different Types Of Bolts

Nut Types

Types Of Washers

Sizes Of Stud Bolt

ASTM Specifications for Bolt Fasteners

ASTM Specifications for Nut Fasteners

ASTM Specifications for Washers

Hex Bolt Dimensions Chart

Metric Hex Bolt Dimensions

Hex Nut Dimensions

Flat Washer Dimensions

Types of Fasteners

Products

Dimension Standards