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engine bolt-,
Engine-Bolts ---
Alternative pic - engine bolt
engine bolt-,
Engine-Bolts ---
Alternative pic - engine bolt

Engine Bolts Manufacturer – Heat Resistant & Aerospace Grade Fasteners

We specialize in manufacturing high-performance Engine Bolts that deliver superior strength, precision, and reliability. Our aerospace-grade engine bolts are designed to perform under extreme heat, vibration, and pressure — making them ideal for aircraft engines, automotive powertrains, and industrial turbines.

Every bolt is crafted using high-grade materials such as Inconel 718, Waspaloy, Heat Resisting Steel Alloys, and Alloy Steel, delivering exceptional resistance to heat, pressure, and fatigue — the critical parameters of engine environments.

Product Range

Our comprehensive range of precision machined engine bolts includes multiple part numbers conforming to AS, BS, and DTD standards.

Part NumberDescriptionMaterial
AS 21000-4Bolt, Machine, Double Hexagon Extended Washer Head, BS.S159, 0.250-28 UNJF-3ABS.S159
AS 48400-6Bolt, Double Hexagon Extended Washer Head, Inconel 718, .190-32 UNJF-3AInconel 718
AS 48600-5Bolt, Double Hexagon Extended Washer Head, PD Shank, 0.3125-24 UNJF-3AHeat Resisting Nickel Alloy Inconel 718
AS 48800-3Bolt, Double Hexagon Extended Washer Head, PD Shank, 0.250-28 UNJF-3AHeat Resisting Nickel Alloy Waspaloy
AS 60100-5Bolt, Double Hexagon Extended Washer Head, PD Shank, 0.190-32 UNJF-3AHeat Resisting Steel Alloy
AS 60200-4Bolt, Double Hexagon Extended Washer Head, PD Shank, 0.250-28 UNJF-3AHeat Resisting Steel Alloy
AS 60300-4Bolt, Double Hexagon Extended Washer Head, PD Shank, 0.3125-24 UNJF-3AAlloy Steel
AS 62900-1Bolt, Machine, Double Hexagon Extended Washer Head, PD Shank, Waspaloy, 0.1900-32 UNJF-3ADTD5639 or EN2959 o

Key Features

  • High Strength Design: Our high strength engine bolts are built to withstand high pressure, stress, and rotational loads in demanding environments.

  • Heat & Corrosion Resistance: Made from nickel alloy engine bolts materials like Inconel and Waspaloy for superior oxidation resistance.

  • Tight Tolerance Precision: Every precision machined engine bolt ensures a perfect fit, reducing fatigue and improving mechanical reliability.

  • Custom Manufacturing Options: We provide custom manufactured engine bolts tailored to your exact specifications and performance needs.

  • Aerospace & Automotive Certified: Compliant with AS, BS, DTD, and EN standards for safety and reliability.

Why Choose UPS Lakshmi for Engine Bolts?

With over 65 years of engineering excellence, UPS Lakshmi has become a trusted partner for global OEMs and tier suppliers. Our state-of-the-art manufacturing facilities, metallurgical expertise, and advanced quality control systems ensure each Engine Bolt performs flawlessly in critical applications.