ASTM A574 Grade Alloy Steel Socket-Head Cap Screws
Manufacturer of ASME SA 574 Hex, Anchor, Flange, Tap and A574m Lag Bolts
ASTM A574 - 17
Standard Specification for Alloy Steel Socket-Head Cap Screws
ASTM A574 specification covers the requirements for quenched and tempered alloy steel socket-head cap screws. ASTM A574 screws shall be fabricated from steel made to fine grain practice and shall be alloy steel conforming to the chemical composition specified. Different tests shall be conducted in order to determine the following mechanical properties of screws: tensile or wedge strength, proof load, yield strength, elongation, Rockwell hardness, and Vickers hardness.
ASTM A574 bolts can be used for many different applications that include fastening wood, steel, and other construction materials for projects such as docks, bridges, highway structures, and buildings. ASTM A574 Hex Bolts and ASTM A574 Hex Head Bolts is some of the toughest fasteners. These ASME SA574 sturdy fasteners are used to connect heavy materials.
Searching for a smaller or ASTM A574 large machined fastener? Contact Hitesh Steel, we can produce as per your specification and requirements.
1. ASTM A574 Scope
1.1 ASTM A574 specification covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4 in. in diameter where high strength is required.
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The following hazard caveat pertains only to the test method portions, sections 5.1, 5.6, 8, and 12, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
| ASTM A574 MECHANICAL PROPERTIES: FULL SIZE SCREWS | |||||||
|---|---|---|---|---|---|---|---|
| Property | Less than, or equal to, 0.500" dia. | Greater than 0.500" dia. | |||||
| Tensile or Wedge tensile strength, ksi min | 180 | 170 | |||||
| Proof Load (stress), ksi | 140 | 135 | |||||
| Rockwell (HRC) | 39 - 45 | 37 - 45 | |||||
| ASTM A574 MECHANICAL PROPERTIES: MACHINED TEST SPECIMEN | |||||||
|---|---|---|---|---|---|---|---|
| Property | Less than, or equal to, 0.500" dia. | Greater than 0.500" dia. | |||||
| Yield strength at 0.2% offset, ksi min | 153 | 153 | |||||
| Tensile Strength, ksi min | 180 | 170 | |||||
| Elongation in 5D, min | 10% | 10% | |||||
| Reduction of Area, min | 35% | 35% | |||||
ASTM A574 Bolts Chemical Composition
| Element | Heat Analysis % | Product Analysis % |
|---|---|---|
| Carbon, min | 0.33 | 0.31 |
| Phosphorus, max | 0.035 | 0.040 |
| Sulfur, max | 0.040 | 0.045 |
ASTM A574 Grades
| AISI 4037 | AISI 4042 | AISI 4137 | AISI 4140 | AISI 4142 |
| AISI 4145 | AISI 4340 | AISI 8740 |
NOTE:
One or more of the following alloying elements: chromium, nickel, molybdenum, or vanadium shall be present in sufficient quantity to ensure that the specified strength properties are met after oil quenching and tempering. As a guide for selecting material, an alloy steel should be capable of meeting the specified requirements if the "as oil quenched" core hardness one diameter from the point is equal to or exceeds 25 HRC + (55 x carbon content).
ASTM A574 Specification
| ASTM A574 Bolt Type | ASTM A574 Anchor Bolt, Carriage Bolt, Flange Bolt, 12 Point Bolt, Hex and Hex Flange Bolts, Hex Head Cap Screw, Place Bolt, Socket Head Cap Screws, Hanger Bolt, Hexagon Bolt / Tap Bolt, Lag Bolt, Machine Bolt, Plow Bolt, Shoulder Bolt, Square Head Bolt, Stud Bolt, T-Head Bolt, Toggle Bolt, U-Bolt |
|---|---|
| Inch | #0000 -3" (customized sizes available) |
| Metric | M1.6 - M48 |
| Length | Customized Length |
| Grade | Non Ferrous, 12.9, 10.9, 9.8, 8.8, 5.8, 4.6, B7, 2, 5, 8, L9 |
| Material | Brass, Bronze / Copper Base Alloy, Copper, Molybdenum, Steel, Hardened Steel, Stainless Steel, Superalloy (Inconel, 718 Bolts, Hastelloy, Monel), Titanium, Exotic Metals, Other |
| Method | Cold forming, Hot Forging, Wire Forming |
| Fastener Standards | ASME / ANSI, BS, DIN, ISO, JIS, SAE, Other |
| Application Industries & uses | Agriculture, Automotive, Construction and Infrastructure, Energy, Transportation |
| Testing Methods | ASTM E38, E76 and E354, ASTM E53, E54, E62, E75 and E478, ASTM E34, E101 and E227, ASTM E 120 and E1409. |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Thread Diameters | M6 to M36 |
| Certification | Dual Certified As per ASTM & ASME Codes |
ASTM A574 Material Stock
- Hex Head Bolts
- Wing Bolts
- Eye Bolts
- Screw Thread Eye Bolt
- Countersunk Bolts
- Stud Bolts
- Allen Key Bolts
- Anchor Bolts
- Roofing Bolts
- Torx Bolts
- Flange Head Bolts
- Deck Bolts
- Round Head Bolts
- Carriage Bolts
- J Bolts
- Lag Bolts
- U Bolts
- Hex Bolts
- Hanger Bolts
- Forged Hook Bolts
- Machine bolts
- Tap bolts
- Socket Button Head Bolts
- Toggle bolt
- T-head bolt
- 12-Point Flange Bolts
- Hex Flange Bolts
- Eye Bolt With Shoulder
- Eye Bolt No Shoulder
- Turned Eye Bolts
- Square U-bolts
- Serrated Flange Bolts
- Button Head Bolts
- Heavy Hex Bolts
- Square Head Bolts
- 12-Point Flange Bolts
- Timber Bolts
- Jack Bolts
- Bent Bolts
- Allen Bolt
- Long Bolt
- Carriage Bolts
- Elevator Bolts
- Hanger Bolts
- Hex Machine Bolts
- Shoulder bolt
- Sex bolts
- Hexagon Bolts for Steel Structures
- Step Bolts for Steel Structures
- Hex Tap Bolts
- Metric Bolts
- Plow Bolts
- Square Head Machine Bolts
- Step Bolts
- Structural Bolts
- Hex Flange Bolt
- Hex Head Bolts
- Tee-Hammer Head Bolt
- Security Anti Theft Bolts
- Hex Head Bolt With Plain Spring Washer
- Hexagon Head Bolts
- Hexagon Flange Bolts DIN 6921
- Hexagon Head Bolts ISO 4016
- Hexagon Head Bolts ISO 4014
- High Strength Structural Bolts
- DIN 976-1 Stud bolts
ASME SA 574/ A574m Bolts stockist in India- ASME, DIN, AS, BS
ASTM A574 Bolts Coatings and plating as well as plain finished oil and tempered is available as required by the end user such as Zinc plating, Cadmium plating, Xylan ® coating, Dupont Teflon ® coating, Hot Dip Galvanized coating, Auge Antifrix ® coating, Sermagard ® coating and Niwat 1000 ® plating.
Available standard: DIN 934, ISO 4033, DIN 975, DIN 2510, ISO 4032, DIN 936, DIN 935, ASME B18.2.2, ASME B18.2.4.6M, DIN 976, DIN 939, DIN 940, DIN 938
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