Product Details
Company Profile

JIS B 1111 Cross Recessed M2 M8 Machine Screw Mushroom Head

JIS B 1111 Cross Recessed Mushroom Head Screws Machine Screw

M2 M3 M4 M5 M6Machine Screws (jis b 1111andtruss) Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.

Process flow

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨CNC➨ tapping ➨make heat treatment(if need) ➨ Finish ➨ Packing

Nominal Diameter
d

P	Pitch
d_k	max
	min
k	Nominal Size
	max
	min
Socket No.
M

0.4	0.45	0.45	0.5	0.6	0.7	0.75	0.8	1	1.25
4.5	5	5.7	6.9	8.1	9.4	10.6	11.8	14	17.8
4.1	4.6	5.3	6.4	7.6	8.9	10	11.2	13.3	17
1.2	1.3	1.5	1.9	2.2	2.5	2.8	3.1	3.7	4.8
1.3	1.4	1.6	2.05	2.35	2.65	2.95	3.25	3.9	5
1.1	1.2	1.4	1.75	2.05	2.35	2.65	2.95	3.5	4.6
1	1	1	1	2	2	2	2	3	3
2.2	2.3	2.5	2.9	4	4.3	4.7	5	6.3	7.8

Materials and Chemical compstition

J995 Chemical Requirements
Grade	Carbon, %	Phosphorus, %	Manganese, %	Sulfur, %
2	0.47 max	0.120 max	-	0.15 max
5	0.55 max	0.050 max	0.30 min	0.15 max
8	0.55 max	0.040 max	0.30 min	0.05 max

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.

FAQ

1. How do you let me trust you.

Jiaxing City Qunbang Hardware Co.,ltd hs its own right of import and export,QBH trademark in China,United States,European Union have been registered.At the same time,you can also check the registration information of our company in the China industry and Commerce system.

2. How about your price.

We will be based on different markets,for different quality and quantity,tailor-made prices for customers,in order to achieve win-win goal.

3. How do you control your quality.

Incoming quality contral( IQC)→Process Quality control(PQC)→Output quality control(OQC),and the random samples is sent to TUV for testing.If the customer received the goods and found quality problems,QBH company promises to be responsible for returning money or replenishing the goods

4. Could you provide free samples?

For new customer, We can provide free samples for standard fastener, But the clients will pay the express

charges. For old customer, We will send you free samples and pay express charges by ourself.

5. Do you accept small order?

QBH company can accept small orders if we have them in stock.Generally speaking,the stock probability of stainless steel fasteners is higher than that of carbon steel fasteners.

6. How about your delivery time

What we pursure is the high efficiency movement pattern,the stainless steel fastener delivery time about 15days,the carbon steel fastener will it about 30days

7. What is your packing.

Usually 25KG/carbon,36CTNS on the pallets,or 20-30kg/Bags,then on the pallet,QBH company personalized packagingis also available,like 10PCS/plastic bag or 10pcs/box,it can print some information

such as LOGO and pattern of customers.

8. What is your payment term

Normally,our terms of payment are TT and L/C,if we cooperate for a long time,we can reach the point of mutual trust,and fully support our customers to become bigger and stronger in the local market.

Not only in the price concessions,but also in the payment can also be made on credit,Specific credit sales time needs to be negotiated separately

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Categories	Steel Hex Bolt
Brand Name:	QBH
Model Number:	M2-M8
Certification:	ISO9001
Place of Origin:	CHINA
MOQ:	10000PCS
Price:	Negotiation
Payment Terms:	L/C TT OA
Supply Ability:	500TON/MONTH
Delivery Time:	30days
Packaging Details:	25kg Carton+900kg/Pallet or 5KG/CTN
Standard:	JIS B 1111
Material:	Carbon steel
Size:	M2-M8
Finish:	ZP BLACK YZP HDG
Grade:	6
Packing:	BULK or Small packing
Process:	Cold Forging
Sample:	Free samples
Port:	shanghai or ningbo
Thread:	UNC and UNF