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Flange Lock Bolt

Name: Flange Lock Bolt
Brand: YONGYI

Product IntroductionFlange anti-loosening bolts are integrated fasteners combining bolts, flange washers and anti-loosening structures, forged from high-strength carbon steel or stainless steel. The flange design increases the force-bearing area, distributes tightening pressure, and effectively prevents deformation of the base material. Combined with anti-loosening technologies such as serrated locking and nylon locking, it can maintain long-lasting clamping force under harsh working conditions such as vibration and impact, avoiding bolt loosening and failure. The product features high precision and strong adaptability, and its surface can be treated with anti-corrosion processes such as galvanizing, dacromet and hot-dip galvanizing according to requirements to meet the weather resistance needs of different scenarios. Product ApplicationWidely used in the field of automobile manufacturing and maintenance, covering the fixation of engine compartment components, assembly of chassis suspension systems, installation of wheel hubs, connection of body structures and other key parts. It is also suitable for engineering machinery, rail transit, agricultural machinery and other scenarios requiring high-reliability fastening, serving as the core fastener to ensure the stable operation of equipment.

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Ordering and Documentation

Confirm the product standard or drawing, thread and dimensions, material or property class, surface finish, quantity, packing and destination before quotation.

Required inspection, material, mechanical-property, coating and packing documents must be listed in the inquiry. Availability, lead time and commercial terms are confirmed for the specific order.

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Flange Lock Bolt Specifications

Product FamilyIndustrial Bolts

StandardConfirm by drawing or purchase specification

MaterialMaterial to be confirmed with the order

FinishSurface finish to be confirmed

YONGYI supplies Flange Lock Bolt for industrial, OEM and project purchasing. This page identifies the requested product family, standard, material, grade and finish so buyers can compare it with their drawing, bill of materials or technical specification.

Standard designations are common market references. Final dimensions, tolerances, mechanical properties, coating requirements and thread fit are confirmed in the quotation or approved drawing before production.

Product	Flange Lock Bolt
Category	Bolts / Industrial Bolts
Referenced Standard	Confirm by drawing or purchase specification
Size / Thread	Confirm nominal size, thread and length with the inquiry
Material	Material to be confirmed with the order
Grade / Property	Mechanical property requirement to be confirmed
Surface Finish	Surface finish to be confirmed
Packaging	Carton, bag, pallet or project-specific export packing after quantity and unit weight are confirmed.

Typical Applications

Steel structures, machinery and industrial equipment assemblies
OEM production and maintenance fastening requirements
Project supply with specified grade, coating, packing and documentation

Information Required for an Accurate Quote

Nominal diameter, thread system, pitch and length where applicable
Required standard, material and property class or hardness
Surface finish, coating standard and any thickness or corrosion requirement
Order quantity, packing method, destination and required supporting documents

Quality and Order Documentation

Depending on the agreed order and available production records, documentation may include an approved drawing, dimensional inspection, material or mechanical-property report, coating report, packing list and shipment photos. Required documents must be stated before quotation.

FAQ

Can this product be supplied to a drawing?	Drawing-based and sample-based requirements can be reviewed. Feasibility, tolerances, tooling, MOQ and lead time are confirmed after technical review.
How should I request an alternative standard?	Send the original specification and identify any acceptable alternative. YONGYI will list confirmed compliance and any technical deviation separately.
Can coating and test documents be included?	Yes, when agreed before order. State the coating specification, test scope, inspection party and document format in the inquiry.