Custom Bolt manufacturer - Industrial bolt Supplier

Bolt

Product Range

The material we can offered are stainless steel #304(A2), #316(A4), Hastelloy Alloy, Monel Alloy, Inconel Alloy

Stainless Steel Bolt

The head we can offered are round head and clipped head, the length range from 1 1/4-26″

Guardrail Bolt

The grades are ASTM A325 and ASTM A490

Heavy Hex Structural Bolt

The head types cover socket head cap screws, socket flat countersunk head cap screws, socket button head cap screws, socket low head cap screws

Socket Cap Screw

The material we can offered are stainless steel #304(A2), #316(A4), Hastelloy Alloy, Monel Alloy, Inconel Alloy

The head we can offered are round head and clipped head, the length range from 1 1/4-26″

The grades are ASTM A325 and ASTM A490

The head types cover socket head cap screws, socket flat countersunk head cap screws, socket button head cap screws, socket low head cap screws

Stainless Steel Bolt

Guardrail Bolt

Heavy Hex Structural Bolt

Socket Cap Screw

Timber bolt have four fillets, the sizes have 1/2″, 5/8″, 3/4″, and use in wood to wood applications

Timber Bolt

Ideal for pivoting applications or for mounting items

Shoulder Bolt

Features a smooth, rounded head and square neck

Carriage bolt

Supply for an integrated flange for load distribution

Hex Flange Bolt

Timber bolt have four fillets, the sizes have 1/2″, 5/8″, 3/4″, and use in wood to wood applications

Ideal for pivoting applications or for mounting items

Features a smooth, rounded head and square neck

Supply for an integrated flange for load distribution

Timber Bolt

Shoulder Bolt

Carriage bolt

Hex Flange Bolt

Use for heavy-duty plowing applications

Plow Bolt

Designed for high-tension applications

TC Bolt

Secures piping and other round objects firmly

U Bolt

Offers superior holding in profiles with T-slots

T-head Bolts

Use for heavy-duty plowing applications

Designed for high-tension applications

Secures piping and other round objects firmly

Offers superior holding in profiles with T-slots

Plow Bolt

TC Bolt

U Bolt

T-head Bolts

Widely used in the oil & gas industry

Threaded Bar

The classic bolt design for general-purpose fastening

Hex Bolt

Use for the general industrial needs

Square Head Bolt

Ideal for lifting, securing with a looped head

Eye Bolt

Widely used in the oil & gas industry

The classic bolt design for general-purpose fastening

Use for the general industrial needs

Ideal for lifting, securing with a looped head

Threaded Bar

Hex Bolt

Square Head Bolt

Eye Bolt

Your Trusted Supplier of Bolt Needs

Shanghai Hengrui Industrial Co., Ltd a custom bolt manufacturer with 15 years experience, is specializing in the manufacturing and exporting of bolts, screws, nuts, washers, and custom non-standard products, with many different materials, like carbon steel, stainless steel, brass, aluminum, titanium, special alloy steel, etc.

What is bolt?

Bolt is a kind of fastener, which include a head and a cylindrical body with threads, are use to connect two or more objects through inserted in pre-made holes, then fasten with a nut in the other end.

What is bolt?

The head type of Bolt

Hex head, Heavy hex head, Round head, Hex flange head, T head, Square head

Full size body

The body diameter is very close to the major diameter of threads. Full-size body have better mechanical properties than undersize body, because they have more material in the shank.

Undersize body

The diameter of undersize body is smaller than the major diameter of threads

Bolt Body Type

The diameter of a bolt’s body plays a crucial role in its strength and application.

Bolt Body Type

The diameter of a bolt’s body plays a crucial role in its strength and application.

Full size body

The body diameter is very close to the major diameter of threads. Full-size body have better mechanical properties than undersize body, because they have more material in the shank.

Undersize body

The diameter of undersize body is smaller than the major diameter of threads

Bolt Thread Lengths

The thread length of a bolt affects its grip strength and the types of materials it can effectively join.
The thread length of bolt have two kinds: Full thread and Partial thread

Full Thread

These bolts have threads that extend from the end to the head, providing maximum grip strength. They can be used in a variety of applications where the bolt is not subjected to significant shear forces. Full Thread Bolts for Maximum Grip

Partial Thread

Having a non-threaded shoulder between the head and the thread part, partial thread bolts are stronger under shear forces. They are ideal for aligning structures due to the smooth shoulder. Partial Thread Bolts for Enhanced Shear Strength

Thread type: M/UNC/UNF

DIN ( M )
Diameter (mm)	Pitch (mm)	Diameter (mm)	Pitch (mm)
M6	1	M24	3
M8	1.25	M24	2
M8	1	M27	3
M10	1.5	M27	2
	1.25	M30	3.5
	1	M30	2
M12	1.75	M33	3.5
	1.25	M33	2
	1.5	M36	4
M14	2	M36	3
M14	1.5	M42	4.5
M16	2	M42	3
M16	1.5	M45	4.5
M18	2.5	M48	5
	2	M48	3
	1.5	M52	5
M20	2.5	M56	5.5
	2	M56	4
	1.5
M22	2.5
	2
	1.5

ANSI, ASME, IFI ( UNC/UNF )
Diameter (Inch)	Pitch (Threads Per Inch)	Diameter (Inch)	Pitch (Threads Per Inch)
1/4-	20UNC	7/8-	9UNC
1/4-	28UNF	7/8-	14UNF
5/16-	18UNC	1"	8UNC
5/16-	24UNF	1"	12UNF
3/8-	16UNC	1-1/8-	7UNC
3/8-	24UNF	1-1/8-	8UNF
7/16-	14UNC	1-1/4-	7UNC
7/16-	20UNF	1-1/4-	8UNF
1/2-	13UNC	1-3/8-	6UNC
1/2-	20UNF	1-3/8-	8UNF
9/16-	12UNC 18UNF	1-1/2-	6UNC
5/8-	11UNC	1-1/2-	8UNF
5/8-	18UNF	1-3/4-	5UNC
3/4-	10UNC	1-3/4-	8UNF
3/4-	16UNF

Dimension Standard

Bolt type	Bolt Standard
Hex bolt	ASME/ANSI B 18.2.1, IFI149, DIN931, DIN933, DIN558, DIN960, DIN961, DIN558, ISO4014
Square bolt	ASTM B18.2.1
Heavy Hex Structural Bolt	ASTM B18.2.6, DIN6914
Socket cap screw	ASME B18.3, DIN912, DIN6912,DIN7984, DIN7991
Carriage bolt	ASTM B18.5, DIN603
Hex flange bolt	ASTM B18.2.1, DIN6921
T head bolt	ASME/ANSI B18.5, DIN186 DIN261 DIN787
Plow bolt	ASTM B18.9, DIN605, DIN608
U bolt	ASME B18.31.5, DIN3570
TC bolt	ASTM B18.2.6
Splice bolt	ANSI/ASME B18.10
Shoulder bolt	ASME B18.3

Grade Specification

A307 & A394 Grade

Standard for Bolt	Grade	Tension Stength	Yield Strength	Enlogation	Length	Hardness
		ksi	ksi	%	in.	Brinell	Rockwell B
A307	GR.A	60min	--	18	＜3*D	121-241HRB	69-100HRB
	GR.A	60min	--	18	≥3*D	241max	100max
	GR.B	60-100	--	18	＜3*D	121-212	69-95
	GR.B	60-100	--	18	≥3*D	212max	95max
A394	type0	74					80-100
A394	type1	120					25-34

A325 Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Enlogation	Bolt Length	Hardness
		in.	ksi	ksi	%	in.	Brinell	Rockwell C
A325	type1	1/2-1	120min	92min	14min	＜2*D	253-319	25-34HRC
		1/2-1	120min	92min	14min	≥2*D	319max	34max
		1-1/8~1-1/2	105min	81min	14min	＜3*D	223-286	19-30HRC
		1-1/8~1-1/2	105min	81min	14min	≥3*D	286max	30max

SAE J429 Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Enlogation	Hardness
		in.	ksi	ksi	%	Surface 30N max	Core Rockwell
SAE J429	GR.2	1/4 to 3/4	74	57	18	/	B80-100
	GR.2	over 3/4 to 1-1/2	60	36	18	/	B70-100
	GR.5	1/4 to 1	120	92	14	54	C25-34
	GR.5	over 1 to 1-1/2	105	81	14	50	C19-30
	GR.8	1/4 to 1-1/2	150	130	12	58.6	C33-39

A354 & A490 Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Enlogation	Hardness
		in.	ksi	ksi	%	Brinell	Rockwell C
A354	BC	1/4~2-1/2	125min	109min	16	255-331	26-36
	BC	>2-1/2	115min	99min	16	235-311	22-33
	BD	1/4~2-1/2	150min	130min	14	311-363	33-39
	BD	>2-1/2	140min	115min	14	293-363	31-39
A490	type1	1/2~1"	150-173	130min	14	<2D, HB 311-352；>2D, HB…-352;	<2D, 33-39；>2D, HC…-39;
A490	type1	1~1-1/2"	150-173	130min	14	<3D,HB313-352；>3D,HB…-352	<2D, 33-39；>2D, HC…-39;

A449 Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Enlogation	Hardness
		in.	ksi	ksi	%	Brinell	Rockwell C
A449	type1	1/4 to 1	120min	92min	14	255-321	25-34
		over 1 to 1-1/2	105min	81min	14	223-285	19-30
		over 1-1/2 to 3	90min	58min	14	183-235	/
	type2	1/4 to 1	120min	92min	14	255-321	25-34
		over 1 to 1-1/2	105min	81min	14	223-285	19-30
		over 1-1/2 to 3	90min	58min	14	183-235	/

A193 Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Enlogation	Reduction of Area	Hardness
		in.	ksi	ksi	min%	min%	Brinell	Rockwell
A193	B7	to 2-1/2	125min	105min	16	50	/	C35
		over 2-1/2 to 4	115min	95min	16	50
		over 4 to 7	100min	75min	18	50
	B7M	to 4	100min	80min	18	50	235	B99
	B7M	over 4 to 7	100min	75min	18	50	235	B99
	Class 1: B8,B8M	all	75min	30min	30	50	223	B96
	B16	to 2-1/2	125min	105min	18	50	321	C35
		over 2-1/2 to 4	110min	95min	17	45	321	C35
		over 4 to 7	100min	85min	16	45	321	C35
	Class 2:B8M	to 3/4	110min	96min	15	45	321	C35
		over 3/4 to 1	120min	80min	20	45	321	C35
		over 1 to 1-1/4	110min	95min	25	45	321	C35
		over 1-1/4 to 1-1/2	100min	85min	30	45	321	C35

ISO 898-1 2009(DIN931/933) Grade

Standard for Bolt	Grade	Bolt Size	Tension Stength	Yield Strength	Proof Load Stress	Enlogation	Hardness
		mm	Mpa	Mpa	Mpa	%
ISO 898-1 2009(DIN931/933)	4.8		420min	340min	310	-	B71-95
	5.8		520min	420min	380	-	B 82-95
	6.8		600min	480min	440	-	B 89-99.5
	8.8	≤16	800min	640min	580	12	C22-32
	8.8	>16	830min	660min	600	12	C23-34
	10.9		1000min	940min	830	9	C32-39
	12.9		1200min	1100min	970	8	C39-44

Bolt

Product Range

Stainless Steel Bolt

Guardrail Bolt

Heavy Hex Structural Bolt

Socket Cap Screw

Stainless Steel Bolt

Guardrail Bolt

Heavy Hex Structural Bolt

Socket Cap Screw

Timber Bolt

Shoulder Bolt

Carriage bolt

Hex Flange Bolt

Timber Bolt

Shoulder Bolt

Carriage bolt

Hex Flange Bolt

Plow Bolt

TC Bolt

U Bolt

T-head Bolts

Plow Bolt

TC Bolt

U Bolt

T-head Bolts

Threaded Bar

Hex Bolt

Square Head Bolt

Eye Bolt

Threaded Bar

Hex Bolt

Square Head Bolt

Eye Bolt

Your Trusted Supplier of Bolt Needs

What is bolt?

What is bolt?

The head type of Bolt

Full size body

Undersize body

Bolt Body Type

Bolt Body Type

Full size body

Undersize body

Bolt Thread Lengths

Full Thread

Partial Thread

Thread type: M/UNC/UNF

Dimension Standard

Grade Specification

A307 & A394 Grade

A325 Grade

SAE J429 Grade

A354 & A490 Grade

A449 Grade

A193 Grade

ISO 898-1 2009(DIN931/933) Grade

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