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B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

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Jiaxing City Qunbang Hardware Co., Ltd

City: jiaxing

Province/State:zhejiang

Country/Region:china

Tel:86-573-82071082

Contact Person:
Mr.Lance View Contact Details

B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

Brand Name	QBH
Model Number	1/4--1inch
Certification	ISO9001
Place of Origin	CHINA
Minimum Order Quantity	900kg
Price	Negotiation
Payment Terms	L/C, T/T
Supply Ability	500TON/MONTH
Delivery Time	30DAYS
Packaging Details	25KG/CTN,36CTN/PALLET or small packing
Standard	ANSI B18.5
Material	Carbon Steel
Size	1/4 to 1 all kind of length
Finish	ZP YZP HDG BLACK
Grade	2,5,8
Packing	Carton and pallet or according to the customer's requirement
Sample	Free Sample
Thread	Mushroom head square neck
Lead time	Per on order quantity
Type	Hexagon Head
Advantage	we can manufacture according to client design,OEM / ODM / customized service provided
Oem	yes,welcome

Detailed Product Description

B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

Specification

Carriage bolts (round head with a square neck) are commonly used in wood connections. The square neck under the round head will seat into the hole in the wood to prevent the head from turning. Because they are used with wood, carriage bolts are rarely high strength and virtually always supplied in a standard ASTM A307 specification.

Manufacturing

QBH Bolt manufactures carriage bolts from 1/2″ diameter through 1-1/4″ diameter in most ASTM and SAE specifications. Special tooling can be created to produce nonstandard head dimensions, carriage bolts larger than 1″ in diameter, or bolt heads with your company’s name and/or logo.

Made from Grade 5 steel, these bolts are suitable for fastening most machinery and equipment. A square neck keeps them from turning when tightening a nut. A smooth, rounded head provides a finished look. Grade 5 steel bolts are marked with three radial lines. Material meets SAE J429 specifications for quality. Dimensions meet ASME B18.5 specifications. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. Zinc-aluminum-coated steel screws are 40 times as corrosion resistant as zinc-plated screws and comparable to Magni-coated screws.

Bolt Diameter	D		C		H		P		F
	Body Diameter		Head Diameter		Head Height		Square Width		Square Depth
	Max	Min	Max	Min	Max	Min	Max	Min	Max	Min
1⁄2	0.515	0.483	1.094	1.032	0.270	0.250	0.515	0.492	0.281	0.250
5⁄8	0.642	0.605	1.344	1.219	0.344	0.313	0.642	0.616	0.344	0.313
3⁄4	0.768	0.729	1.594	1.469	0.406	0.375	0.768	0.741	0.406	0.375
7⁄8	0.895	0.852	1.844	1.719	0.469	0.438	0.895	0.865	0.469	0.438
1	1.022	0.976	2.094	1.969	0.531	0.500	1.022	0.990	0.531	0.500
11⁄4*	1.277		2.850		0.531	0.500	1.250		0.625

Standard Thread Length

Bolt lengths ≤ 6″: Thread length = (2 X diameter) + 1/4″
Bolt lengths > 6″: Thread length = (2 X diameter) + 1/2″

Note: Most stock carriage bolts have extended thread length.

Process flow

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment(if need) ➨ Finish ➨ Packing

Product Grade

Materials and Chemical compstition

1008

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Al
0.06	0.06	0.33	0.013	0.003	0.01	0	0.01	0.028

1035

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.34	0.13	0.73	0.012	0.002	0.02	0.01	0.02

10B21

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	B
0.2	0.04	0.81	0.017	0.007	0.017	0.0021

1045

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.45	0.23	0.58	0.014	0.006	0.057	0.008	0.016

40CR

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.4	0.21	0.54	0.015	0.008	0.95	0.02	0.02

35CRMO

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Mo
0.35	0.22	0.59	0.01	0.003	0.93	0.01	0.01	0.21

42CRMO

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Mo
0.42	0.27	0.92	0.013	0.004	1.01	0.03	0.04	0.2

Finish

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

PACKING

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

The advantages of QBH

QBH brand sales to the main quality assurance.
Years of export trade management, excellent service, word-of-mouth guarantee.
By working with TUV,escort for quality.
Customization of non-standard parts can be made according to customer's requirements and drawings.
For quality customers,we can provide a certain credit period.

Product Tags: B18.5 Round Head Square Neck Bolts Gr2 Round Head Square Neck Bolts SAE J429 Bolt Round Head Square Neck

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B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

B18.5 Carriage Gr2 5 8 Round Head Square Neck Bolts

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