Countersunk Bolts Flat Head Low Profile Design High Holding Strength For Machinery Fabrication Manufacturer In India

Countersunk Bolts Flat Head Low Profile Design High Holding Strength For Machinery Fabrication Manufacturer In India
₹35 - ₹159

Minimum Order : 150 piece

Customization as per requirements


Specification Details
SizeM2, M2.5, M3, M4, M5, M6, M8, M10, M12, M14, M16,
TypeBolt, Custom Fasteners, Nut, Screw, Washer, Rivet, Threaded Rod, Studs, Coated, Nails
StandardDin, Iso, Jis, Gb, Is, Bs, Astm
Length3/8 to 8″
MaterialStainless Steel, Phosphor Bronze, Monel, Inconel, Incoloy, Hastelloy, Nickel, Silicon Bronze

Countersunk Bolts Used in Flush Surface Fastening for Mechanical Electrical and Structural Installations Supplier in India

Caliber Enterprise, the company specializing in the provision of reliable fastening solutions to various industrial requirements, is a top Countersunk Bolts Manufacturer that specializes in the provision of high quality bolts used to provide secure and flush fastening in the metal, wood and plastic application. Countersunk bolts have a tapered head which is flush with the surface and it provides a smooth finish, yet it provides strong and reliable joints. The bolts find extensive application in construction, machinery, fabrication and equipment assembly where it is important to have surface alignment and appearance. In highly industrialized applications of PEEK nut bolts, such as to provide light weight performance, chemical resistance, and electrical insulation are common alternatives to PEEK.


To accommodate light-duty and heavy-duty conditions of operations, countersunk bolts are produced in different sizes, materials and finishes. Their mechanical strength and size accuracy can enable them to deliver under the mechanical pressure and frequent usage. In constructions and load-carrying projects where increased strength and greater tensile capacity in bolts are needed, it is customary to choose High tensile bolts to provide a high holding capacity and stability over time. Collectively, these fastening solutions enhance accuracy of assembly, high-quality, and uniformity of work in industrial, business, and engineering works.


Blind Flanges – Dimensional & Rating Table

MaterialGrade / StandardFastener TypeSize RangeHead AngleDrive TypeSurface FinishTypical Applications
Carbon SteelIS 1365Countersunk ScrewM3–M2090°Slotted / PhillipsZinc PlatedSheet metal, panels
Carbon SteelISO 10642Socket CSK ScrewM4–M2490°AllenBlack OxideMachinery assemblies
Alloy SteelASTM A574Socket CSK ScrewM5–M3090°AllenPlainHigh-load joints
Stainless SteelA2-70 (304)Countersunk ScrewM3–M2090°Phillips / TorxPlainCorrosion-prone areas
Stainless SteelA4-80 (316)Countersunk ScrewM4–M2490°AllenPlainMarine & chemical service
  • Usage & Installation PurposeCountersunk bolts are applied when a fully smooth surface is needed at the end of the installation and eliminates protrusions which could inhibit movement, safety or aesthetics. They are usually used in steel buildings, machine foundations, conveyors, floors and fabricated assemblies where even loading and alignment of surfaces is important.
  • Manufacturing and Quality ControlThese bolts are manufactured in correctly machined countersunk heads that fit normal seating angles so that there is even distribution of loads after tightening. Regular thread rolling and dimensional inspections contribute to fastening reliability and minimize the loosening process in the presence of vibration and assist in tightening repeatedly in the course of maintenance operations.
  • Material Grades & StandardsAvailable in the Carbon Steel, Alloy Steel and Stainless Steel grades like ASTM A307, ASTM A325, ASTM A193, and Stainless Steel 304/316 where manufacturing can be in DIN, ISO and IS standards, depending on the application and pressure requirements.

  • Other Characteristics of PerformanceThe countersunk bolts also serve both practical and aesthetic requirements as they spring up with both good mechanical locking and clean, flat surface finish. Plain, zinc-plated, and coated finishes can be provided to allow indoor applications or outdoor exposure and moderate corrosive conditions.

Client Project Report of Countersunk Bolts

Product SuppliedQuantityCities (India)
Countersunk Bolts for Structural Plate Connections193 PiecesBhilai
Countersunk Bolts for Machinery Base Assemblies167 PiecesPune
Countersunk Bolts for Architectural Steel Work208 PiecesAhmedabad
Countersunk Bolts for Equipment Mounting Systems176 PiecesHosur
Countersunk fasteners are involved where a smooth finish is needed, and the material surface should be made even or lower than the head so as to be safe, attractive, or aerodynamic. The load transfer, tightening torque and load resistance to loosening are directly influenced by head angle, type of drive and material grade; particularly, in small crosssections and high precision assemblies. With a B2B online market, buyers can have access to accurate tables that gave details on standards, head geometry and application suitability to choose the right countersunk configuration and to guarantee the effective performance in both appearance and structure-critical applications.


Type of Sub-products

  • Flat Head Countersunk Bolts.jpg
    Flat Head Countersunk Bolts

    Flat Head Countersunk Bolts

    Flat Head Countersunk Bolts are fasteners with a flat, tapered head designed to sit flush with the surface, offering a clean and smooth finish, commonly used in machinery, automotive, and structural applications where a streamlined appearance is required.

  • Phillips Countersunk Bolts.jpg
    Phillips Countersunk Bolts

    Phillips Countersunk Bolts

    Phillips Countersunk Bolts are fasteners with a flat, conical head featuring a Phillips drive, designed to sit flush with the surface, offering a neat finish and easy installation, widely used in machinery, furniture, and automotive applications.