Metric DIN 7991 Flat Countersunk Head Hexagon Socket Cap Screw

• Material: Stainless Steel
• Type: Hexagon Head
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, GB, ANSI, BSW, JIS, GOST
• Surface: Zp.Black.Stainless Steel.
• Model NO.: m6x50
• Diameter: 3mm-16mm
• Length: 5mm-200mm
• Transport Package: in Cartons, on Pallet.
• Specification: 3.5, 4.2, 4.8, 5.5, 6.3
• Trademark: WELLBOLT
• Origin: China
• HS Code: 7318120000
• Production Capacity: 5000 Tons of Hex Head Wood Screw Per Year

Product Description

Product	DIN7991 Hex Socket Countersunk Head Cap screws
Grade	Grade 4.8, 8.8, 10.9,12.9, A2-70,A4-80
Material	Carbon Steel, Alloy Steel, Stainless Steel, Aluminum, Brass
Coating	Galvanized, Black Oxide, Dacromet, etc
Size	M3-M24
Packing	Small box, Bags, Carton

DIN7991 Standard.

Screw Thread d		M3	M4	M5	M6	M8	M10	M12	(M14)	M16	(M18)	M20	(M22)	M24
P	Pitch	0.5	0.7	0.8	1	1.25	1.5	1.75	2	2	2.5	2.5	2.5	3
α	tol.(+2)	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	90°	60°	60°
b	L≤125	12	14	16	18	22	26	30	34	38	42	46	50	54
	125<L ≤ 200	/	/	/	24	28	32	36	40	44	48	52	56	60
	L>200	/	/	/	/	/	45	49	53	57	61	65	69	73
dk	max=nominal size	6	8	10	12	16	20	24	27	30	33	36	36	39
	min	5.7	7.64	9.64	11.57	15.57	19.48	23.48	26.48	29.48	32.38	35.38	35.38	38.38
ds	max=nominal size	3	4	5	6	8	10	12	14	16	18	20	22	24
	min	2.86	3.82	4.82	5.82	7.78	9.78	11.73	13.73	15.73	17.73	19.67	21.67	23.67
e	min	2.3	2.87	3.44	4.58	5.72	6.86	9.15	11.43	11.43	13.72	13.72	16	16
k	max	1.7	2.3	2.8	3.3	4.4	5.5	6.5	7	7.5	8	8.5	13.1	14
s	Nominal Size	2	2.5	3	4	5	6	8	10	10	12	12	14	14
	min	2.02	2.52	3.02	4.02	5.02	6.02	8.025	10.025	10.025	12.032	12.032	14.032	14.032
	max	2.1	2.6	3.1	4.12	5.14	6.14	8.175	10.175	10.175	12.212	12.212	14.212	14.212
t	max=nominal size	1.2	1.8	2.3	2.5	3.5	4.4	4.6	4.8	5.3	5.5	5.9	8.8	10.3
	min	0.95	1.55	2.05	2.25	3.2	4.1	4.3	4.5	5	5.2	5.6	8.44	9.87

Product Pictures:
Stainless Steel 304/316 DIN7991 Hex Socket Countersunk Head Cap screws

Black Oxide DIN7991 Hex Socket Countersunk Head Cap screws

Galvanized DIN7991 Hex Socket Countersunk Head Cap screws

ABOUT US:
Wellbolt is an excellent fasteners & metal production manufacturer and exporter in China,from the beginning of the production of bolts and screws, established its full range fastener distribution line 3 years later.
We supply all kind of  bolts, rods, wood screws, special nuts and stamping parts and export various fasteners and metal products, material can be carbon steel, alloy steel, stainless steel SUS 304, SUS 316, SUS 316L, Aluminum, Brass and plastic, etc. 
Our team has more than 10 years of experience in fastener production and export, and we can provide customers with the right high-quality products.With high-quality products and first-class service, our products has been exported to hundreds of customers in more than 60 countries since 2010.
We believe that high quality and honest service will help customers win the market and achieve a win-win situation.



FAQ

Q1: Why choose Wellbolt? To provide our customers with first-class services in the supply of quality fasteners minimizing costs.

1.1. Vision: We wishes to build successful relations with our partners and be their first choice as an fastenerssupplier. 

1.2. Mission: professional customer service, and innovation in technology. Further more, we do not only offer you more reasonable quality and price than your expectations, but also would like to be your friend and to provide
you market sales suggestion for your reference, if you have a better idea , please feel free to share with us. 

Q2.How is quality?ensured?
 All our processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to
delivery.Our company had strong technology support, We have cultivated a group of managers who are familiar with product quality
,good at modern concept of management. 

Q3:If you can not find on our website the product you need how to do?
 You can send thepictures/photos and drawings of the products you need by email , we will check if we have them. We develop new
models every month,Or you can send us samples by DHL/TNT, then we can develop the new model especially for you. 

Q4:Can You Strictly Follow The Tolerance on The Drawing And Meet The High Precision?
 Yes, we can, we can provide high precision parts and make the parts as your drawing.

Q5: How should I order and make payment?
 By T/T, for samples 100% with the order; for production, 30% paid for deposit by T/T before production arrangement, the balance
to be paid before shipment. 

Q6: What's your Delivery Time?
 Standard parts: 7-45days
Non-standard parts: 25-45days
We will make the delivery as soon as possible with the guarantee quality.

Q7:How to Custom-made (OEM/ODM)?
 If you have a new product drawing or a sample, please send to us, and we can custom-made the hardware as your required.