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Technical Metal Corporation have 20 years of experiance in manufacturing & exporting of A4-70 and A4-80 Stainless Steel Hex Nut in india & global market. we supplied A4-70 and A4-80 Stainless Steel Hex Nut to 300 organization to 30 countries. Technical Metal Corporation is the industry leader in offering what is undoubtedly the most comprehensive A4-70 and A4-80 Stainless Steel Hex Nut range and stock in all sizes in metric, imperial and in all grades.A bolt is a form of threaded fastener with an external male thread. A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten two or more parts together.Nuts have internal machine threads, for use with machine thread bolts and screws.
Orders at Technical Metal Corporation are guaranteed fast delivery of the A4-70 and A4-80 Stainless Steel Hex Nut in the country. The main reason being we have an excellent warehousing and storage facilities for both finished and semi finished goods.They are made ready as per the urgent requirements of the customers. The A4-70 and A4-80 Stainless Steel Hex Nut are manufactured to sustain very high pressure and product warranty.In 2016 we have stocked more than 188 tons of A4-70 and A4-80 Stainless Steel Hex Nut in all sizes, to cater to immediate delivery and urgent needs of the clients. For small requirements we can dispatch the A4-70 and A4-80 Stainless Steel Hex Nut immediately against the purchase order.
Four Properties of A4-70 and A4-80 Stainless Steel Hex Nut
A4-70 and A4-80 Stainless Steel Hex Nut use stainless steel as raw materials. A4-70 and A4-80 Stainless Steel Hex Nut has four properties.
1. High temperature resistance. For high hardness, the Bolts has strong oxidation resistance. It cannot work under high temperature and cannot be interfered by high temperature. If the Bolts is passivated after being made out, the temperature resistance will be better.
2. Physical properties. A4-70 and A4-80 Stainless Steel Hex Nut has higher specific resistance. The specific resistance of stainless steel is higher than that of carbon steel by five times. Standard parts have an expansion factor. Through experiment, if the temperature is higher, the expansion factor of stainless steel Bolts will be improved definitely.
3. Stress capacity. A4-70 and A4-80 Stainless Steel Hex Nut can endure moderate stress. Although it cannot be compared favorably with high strength bolt, the fastener can still meet the common requirements.
4. Mechanical properties. High rust resistance and corrosion resistance have close relationship with the features of stainless steel. For standard parts developing constantly, mechanical properties of A4-70 and A4-80 Stainless Steel Hex Nut will be enhanced further.
A4-70 and A4-80 Stainless Steel Hex Nut Specification
FASTENERS -SCREWS, BOLTS AND NUTS FOR TOUGHEST USE
Stainless Steel Fasteners
ASTM / ASME A/SA 193 / 194
B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4
Alloy Steel Fasteners
ASTM / ASME A/SA 193 / 194 GR
B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
UNS NO.S 31803, S 32205
M10 To M100 , Length Upto 5 Meters
Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolts, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts , T- Head Bolts , Wing Screw , Eye Bolt , Eye Bolt, Foundation Bolts, Structural Bolts.
Plain Washer , Plain Big & Small Od Washer , Spring Lock Washer , Spring Washer Heavy Duty , Tooth Washer , Star Washer , Tab Washer With One & Two Tab
Pan Head Slotted Screws , Cheese Head Slotted Screws , Countersunk Head Slotted Screws , Countersunk Raised Head Slotted Screws , Pan Phillipse Head Screw , Countersunk Phillipse Raised Head Screws , Slotted Cheese Trim Head Machine Screws , Socket Head Allen Cap Screws , Allen Countersunk Socket Head Cap Screws , Socket Head Shoulder Screws , Socket Head Cap Screw Low Head , Hexagon Socket Set Screw With Flat Point , Hexagon Socket Set Scews With Cone Point , Hexagon Socket Set Screw With Dog Point , Hexagon Socket Set Screws With Dog Point , Hexagon Socket Set Screws With Cup Point , Imprial Socket Cap Screws .
Threaded Rod, As Per Drawing And Customers Spec.
-> Hot Dipped Galvanizing Fasteners
-> Xylan Coated Fasteners
-> Phosphate Coated Fasteners
-> Zinc Coated Fasteners
-> Teflon Coated Fasteners
-> Cadmium Coated Fasteners
Manufacturer Test Certificate As Per En 10204 / 3.1
Our A4-70 and A4-80 Stainless Steel Hex Nut plant is equipped with various testing facilities like Tensile Testing Machine also known as tension testing. We also conduct other tests like Hardness Test, IGC Test, Positive Material Identification Test to ensure that all the product going out of our manufacturing plant are the best in terms of quality.
Comparison: US and ISO (DIN) Stainless Steels
A2 and A4 as compared to 304 and 316
Percent difference from US – Stainless Steel
up to M20
M22 and over
Give us a call today to get all the information, +91-98210 71212, If you're looking to buy or sell Fasteners (Bolts, Nuts, Washers, Stud Bolt, Screws), we can help., call to our Distributor in India or mail us to email@example.com for instant free quote of Fasteners (Bolts, Nuts, Washers, Stud Bolt, Screws).
A4-70 and A4-80 Stainless Steel Hex Nut Dimensions
Selection of Diameters - Tightening Torques, Loads
Guideline values for screws in steel groups A4-70 and A4-80 with standard metric threads to DIN 13
Load 1)Force at 0.2% yield point N
Initial Stressing ForceN
Force in service N
Radial Static or Dynamic
1)The values correspond to 100% of the 0.2%
Notes on application:
-> When selecting the correct screw diameter it should be ensured that the total load on the screw does not exceed 90% of the standardized 0.2% yield stress. Care should be taken to ensure correct initial tensioning, with a torque wrench wherever possible.
-> Experience has shown that a utilization of 70% of the total load is reasonable average for the initial stressing force to allow additional forces in service to be taken up.
**The table above is only intended as an aid for quick comparison**
ASTM Specifications for A4-70 and A4-80 Stainless Steel Hex Nut
ASTM A193 :Alloy steel and stainless steel bolting materials for high temperature or high pressure service.
We have Ready Stock All Different Types Of Stainless Steel Fasteners
Stainless Steel Fasteners
Stainless Steel bolts
Stainless Steel Nuts
Stainless Steel Screw
Stainless Steel Washer
Stainless Steel Automotive Fasteners
Stainless Steel Marine Fasteners
Metric Stainless Steel Fasteners
304 Stainless Steel Nuts
304 Stainless Steel Bolts
304 Stainless Steel Screw
304 Stainless Steel Washer
304L Stainless Steel Nuts
304L Stainless Steel Bolts
304L Stainless Steel Screw
304L Stainless Steel Washer
904L Stainless Steel Nuts
904L Stainless Steel Bolts
904L Stainless Steel Screw
904L Stainless Steel Washer
17-4PH Stainless Steel Bolts
17-4PH Stainless Steel Washer
17-4PH Stainless Steel Nuts
304H Stainless Steel Nuts
304H Stainless Steel Bolts
304H Stainless Steel Screw
304H Stainless Steel Washer
310 Stainless Steel Nuts
310 Stainless Steel Bolts
310 Stainless Steel Screw
310 Stainless Steel Washer
316 Stainless Steel Nuts
316 Stainless Steel Bolts
316 Stainless Steel Washer
316H Stainless Steel Nuts
316H Stainless Steel Bolts
316H Stainless Steel Screw
316H Stainless Steel Washer
316L Stainless Steel Nuts
316L Stainless Steel Bolts
316L Stainless Steel Screw
316L Stainless Steel Washer
17-4PH Stainless Steel Screw
317 Stainless Steel Nuts
317 Stainless Steel Bolts
317 Stainless Steel Screw
317 Stainless Steel Washer
317L Stainless Steel Nuts
317L Stainless Steel Bolts
317L Stainless Steel Screw
317L Stainless Steel Washer
321 Stainless Steel Nuts
321 Stainless Steel Bolts
321 Stainless Steel Screw
321 Stainless Steel Washer
347 Stainless Steel Nuts
347 Stainless Steel Bolts
347 Stainless Steel Screw
347 Stainless Steel Washer
410 Stainless Steel Nuts
410 Stainless Steel Bolts
410 Stainless Steel Screw
410 Stainless Steel Washer
A4-70 and A4-80 Stainless Steel Hex Nut Useful Information
.A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads’ friction, a slight stretch of the bolt, and compression of the parts.We are manufacturing high tensile bolts & fasteners in bigger diameter bolt nuts & HV grade hot dip galvanised fasteners, We are the biggest manufacturers in India for bigger diameter bolts & nuts in high tensile grade and fasteners
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We produce premium quality bolts from Nickel Alloys , Stainless Steels, Super Alloys, Duplex steels & Super Duplex, Copper & Copper Alloys with ASTM/ASME/DIN Standards & Specifications.We produce different types of hot forged cold formed bolts in almost all shapes & sizes.We also provide passivation, quality coating further processing as per client's requirement.Our Manufacturing Size ranges from M10 to M100 with varied length.
DIN ES ISO 3506-1: 1997 specifies the mechanical properties of bolts, screws and nuts made of austenitic (amongst others) stainless steels, when tested over an ambient temperature range of 15o C to 25o C. Technical Metal Corporation, through its Manufacturing, trading and Export division High Tensile Stainless, supplies a range of material that enable fastener manufacturers and others to produce products that meet or exceed the properties required in the above standard. Material to meet the properties of A4-80 is one element of our product range.
The designation A4-80 derives from â€œAâ€ meaning the material is a cold worked austenitic stainless, divided into 5 grades (1-5) according to material characteristics (see Annex B of DIN ES ISO 3506-1: 1997 for full description of each grade). The â€œ70â€ denotes the minimum tensile strength to be met by the material (actually the bolt, screw or nut after manufacture).
Therefore, A4-80 is an austenitic, acid proof stainless grade (usually 304 material - 304 or 304L) which has been cold worked to provide a minimum tensile strength of 700 N/mm2 (MPa).
Solution Treatment (Annealing) - Heat to 1010-1120Â°C and cool rapidly. These grades cannot be hardened by thermal treatment..
Our company is equipped with modern machineries and is organized in four divisions viz WIRE PREPARATION PLANT, NUT MANUFACTURING DIVISION, BOLTS/SCREWS & MACHINE SCREWS MANUFACTURING DIVISION, SELF TAPPING & WOOD SCREWS MANUFACTURING DIVISION. The Production facilities always pulsate with the activities of more than 110 employees turning out a wide range of fasteners.
Our divisions are equipped with modem facilities for Development, Q.A and Manufacturing of our products. These are manned by qualified personal having technical expertise and all are committed to maintain best quality of our products. Technical Metal Corporation is proud of its diverse range of fasteners like. Nuts, Bolts/Screws, Socket Products, Machine Screws, Washers, Self Tapping Screws, Wood Screws, Studs, Threaded Rods etc.
We export A4-70 and A4-80 Stainless Steel Hex Nut to Iran, Iraq, Oman, Qatar, Albania, Muscat, Bahrain, Turkey, Egypt, Maldives, Italy, UAE, Bahrain, Indonesia, Australia, Kuwait, Saudi Arabia, South Africa, Germany, UK, Denmark, Canada, USA, Peru, Brazil, Nizeria, Mexico, Venezuela (Latin America), South America, Russia, kazakhstan etc.
A4-70 and A4-80 Stainless Steel Hex Nut ASTM Grade
Designation System for Stainless Steel (ISO 3506 1979)
Identification of Steel Grades
A1, A2, A4
A4-70 and A4-80 Stainless Steel Hex Nut Properties
Extract from DIN 267 Part 11 – Chemical Composition of austenitic chromium-nickels steels in % by weight
Material No. to AISI
0.15 to 0.35
17.0 to 19.0
8.0 to 10.0
17.0 to 20.0
8.0 to 13.0
16.0 to 18.5
2.0 to 3.0
10.0 to 14.4
Maximum values unless otherwise stated.
Types A2 and A4 may contain up to a maximum of 4% copper.
The selection of steel grades within a group is the prerogative of the manufacturer, unless the purchaser has specified particular steels to ISO or national standards.
Different grades of steel may be used as long as all physical and mechanical properties and the corresponding corrosion resistance of the finished product are achieved. Only when all these conditions are fulfilled may finished articles be marked in accordance with DIN 267 Part 11.
Screws, Bolts and Nuts from M6 - A4-70 and A4-80 Stainless Steel Hex Nut
Bolts and Screws
Minimum Tensile Strength N/mm²
Minimum Proof Stress N/mm²
Minimum Elongation at fracture mm
Proof Load Stress (sp) N/mm²
A1 A2 A4
M6 - M39
0.6 x Nom. Dia.
M6 - M20
0.4 x Nom. Dia.
M6 - M20
0.3 x Nom. Dia.
Chemical Composition for Austenitic A4-70 and A4-80 Stainless Steel Hex Nut
Chemical Composition1 (% maxima unless stated)
2 3 4
303S31, 303S42, 1.4305
304, 394S17 (BS 3111), 1.4301, 1.4567
321, 1.4541, 347, 1.4550
316, 1.4401, 1.4578
316Ti, 1.4571, 316Cb, 1.4580
430, 1.4016, 430Ti, 1.4520 430Cb, 1.4511
Mechanical Properties-Austenitic Grades A4-70 and A4-80 Stainless Steel Hex Nut
Tensile Strength Rm MPa
Yield Stress Rp 0.2 Mpa
Elongation AL Minimum
Proof Load Stress Sp Mpa (N/mm2) minimum
Full Range of A4-70 and A4-80 Stainless Steel Fasteners Products
both Imperial & Metric. Dimensions range from M3 to M72 and quantities from 1 to 10, 000.