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ASTM F436 Hardened Washers Wholesale

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ASTM F436 Hardened Washers Manufacturers

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Introduction

ASTM F436 hardened washers are mandatory for use with high-strength structural bolts, specifically ASTM A325 and A490, as well as galvanized fasteners. These washers are heat-treated to a high hardness level, ensuring they can withstand the massive compressive forces exerted by tensioned structural bolts. They prevent damage to the mating surface of the structural steel and distribute the load evenly, which is crucial for the integrity of friction-type connections.

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Specification

Standard

ASTM F436 / F436M
Hardness Range

38 to 45 HRC (Rockwell C Scale)
Compatibility

ASTM A325, A490 Bolts
Configuration

Circular, Beveled (for sloped surfaces)
Finishes

Plain, Hot Dip Galvanized, Mechanically Galvanized

Applications

  • Structural Steel Construction: Essential for connecting main load-bearing members in buildings and bridges.

  • High-Strength Bolted Joints: Used whenever an A325 or A490 bolt is tensioned.

  • Heavy Equipment Repair: Used in joints requiring high clamp load and resistance to loosening.

  • Anchor Bolt Assemblies: Providing a robust bearing surface for anchor bolt nuts.

Advantages

  • Load Distribution: Spreads the high clamping force over a wider area, preventing distortion of the connected material.

  • Prevents Galling: Acts as a smooth surface for the nut to turn against, ensuring correct torque application.

  • Required by Code: Mandatory for specific structural steel connections worldwide (AISC, Eurocode).

  • Dimensional Consistency: Precision stamping ensures accurate dimensions, vital for proper friction-type joints.

Payment & Shipping

As a high-volume commodity item, we accept L/C at Sight for container loads. Washers are typically bundled in bulk to minimize shipping costs, with HDG washers separated to prevent scratching. We offer certification documents accompanying every shipment.

FAQ

  • Q: Are all flat washers suitable for structural use?
  • A: Absolutely not. Standard commercial flat washers do not possess the required minimum hardness (38 HRC) to prevent deformation under the load of structural bolts. Only washers certified to ASTM F436 must be used in these applications.
  • Q: When should a beveled washer be used?
  • A: A beveled washer is required when the connected material has a sloped or non-perpendicular surface, such as the flange of an S-beam or C-channel. The beveled washer ensures the nut bears against a parallel surface, preventing bending forces on the bolt.

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Steady-Ind

Steady-Ind - Pursue quality and cast high-quality goods.

STEADY manufactures over a thousands different types of blind rivet nut in steel,aluminium and stainless steel,thread size from M3-M16 in metric and UNC #6-32 to UNC 1/2-13 in inch. High advantage in stainless steel blind rivets both for open and sealed type, mutigrip,monobolt and other structural rivets. As China ASTM F436 Hardened Washers Manufacturers and ASTM F436 Hardened Washers Factory, we focus on "one stop shopping" and with advantage of large production capacity , consistent quality, competitive prices, punctual delivery and goods serverices before and after sales, STEADY has become one of the leading blind fasteners manufacuture & supplier in Asia.

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Recommended LINS: ASTM A194 Grade 8 Heavy Hex Nuts Full Thread Grade 8.8 Hex Bolts ASTM A307 Grade A Hex Bolts Hot Dip Galvanized Construction Fasteners