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Bolts › Countersunk, Plow & Elevator Bolts

Flush Mount R16-4 Countersunk Ring Grooved Lock Bolt Custom Length Available

Updated 2026-11-03 · Markdown version

Model no. R16-4

US$0.017 – 1.70 / piece

MOQ 10,000 pieces · Final price confirmed in your quote

Material: Metal
Surface Finishing: Zinc Plated
Customized: Customized
Package Size: 100.00cm * 100.00cm * 100.00cm
High Strength: Delivers excellent tensile and shear strength, capable of withstanding heavy loads .
Dissimilar Material Joining: Ideal for joining materials that are difficult to weld, such as aluminum to steel .
Tech innovation drives development: the company holds a patent for the Anti-loosening Hooke's Principle Fastening System and boasts a technical team with senior experts (40+ years of experience) offering customized solutions. It maintains long-term cooperation with major metal suppliers (Shanghai Fanglong, Wuxi Aotian, Jingjiang Youyi) to secure high-quality raw materials (carbon steel, stainless steel, copper alloys).

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Material	Metal
Surface Finishing	Zinc Plated
Model NO.	R16-4
Certification	ISO
Performance	Anti-Static
Customized	Customized
Transport Package	Box
Specification	Customized
Origin	China
HS Code	7318230000
Production Capacity	600000PCS/Month
Package Size	100.00cm * 100.00cm * 100.00cm
Package Gross Weight	100.000kg
Superior Joint Integrity	Provides extremely high and consistent pre-load, ensuring a strong and reliable connection .
Vibration & Fatigue Resistant	The swaged collar is mechanically locked to the pin, creating a joint that is highly resistant to loosening and fatigue failure .
Maintenance-Free	Certified as maintenance-free, eliminating the need for re-torquing and reducing lifetime costs .
High Strength	Delivers excellent tensile and shear strength, capable of withstanding heavy loads .
Fast & Repeatable Installation	Installation is quick, simple, and highly repeatable, cutting assembly time and increasing production throughput .
Hole-Filling Capability	The pin swells during installation to fill the hole, providing a strong, rigid connection with no play .
Dissimilar Material Joining	Ideal for joining materials that are difficult to weld, such as aluminum to steel .
Visual Inspection	Installation is easy to inspect, with many designs featuring a flush pin break as confirmation of correct installation
Automotive	Truck frames, body panels, chassis components, commercial vehicles .
Aerospace	Airframe assemblies, structural components (meeting stringent standards like EN 4172, EN 4176) .
Railway	Rail car construction, track components .
Construction & Heavy Equipment	Steel structures, bridges, cranes, mining equipment .
Container & Trailer	Refrigerated containers, semi-trailers, intermodal containers .
Industrial Machinery	Ventilation systems, storage racks, security fencing .
Steel (Zinc Plated)	High strength, general-purpose applications .
Stainless Steel	Maximum corrosion resistance for harsh environments .
Aluminum	Lightweight, corrosion-resistant, ideal for aluminum structures .
Titanium	High strength-to-weight ratio, used in aerospace and high-performance applications .
Battery-Powered	Portable for field use.
Pneumatic (Air-Powered)	Common for production lines.
Hydraulic	For heavy-duty, high-volume applications .
Nose Assemblies	Interchangeable noses are required for different fastener families and diameters .
Tech innovation drives development	the company holds a patent for the Anti-loosening Hooke's Principle Fastening System and boasts a technical team with senior experts (40+ years of experience) offering customized solutions. It maintains long-term cooperation with major metal suppliers (Shanghai Fanglong, Wuxi Aotian, Jingjiang Youyi) to secure high-quality raw materials (carbon steel, stainless steel, copper alloys).
Answer	Sea Freight, Air Freight and others Express Delivery ways for you.
Category	Countersunk, Plow & Elevator Bolts

Description

Flush Mount R16-4 Countersunk Ring Grooved Lock Bolt Custom Length Available is part of our countersunk, plow & elevator bolts range (Bolts).

Key details

Material: Metal
Certification: ISO
Surface Finishing: Zinc Plated
Performance: Anti-Static
Railway: Rail car construction, track components .
Construction & Heavy Equipment: Steel structures, bridges, cranes, mining equipment .
Industrial Machinery: Ventilation systems, storage racks, security fencing .
Steel (Zinc Plated): High strength, general-purpose applications .

Available configurations include material, surface finishing, customized, package size and high strength. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 10,000 pieces at US$0.017 – 1.70 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Flush Mount R16-4 Countersunk Ring Grooved Lock Bolt Custom Length Available?

The listed minimum order is 10,000 pieces, at US$0.017 – 1.70 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

What are the main specifications of Flush Mount R16-4 Countersunk Ring Grooved Lock Bolt Custom Length Available?

Material: Metal; Certification: ISO; Surface Finishing: Zinc Plated; Performance: Anti-Static; Railway: Rail car construction, track components .; Construction & Heavy Equipment: Steel structures, bridges, cranes, mining equipment .. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, surface finishing, customized, package size and high strength. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other countersunk, plow & elevator bolts are available?

The Countersunk, Plow & Elevator Bolts category lists 533 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/countersunk-plow-elevator-bolts/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

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Request a quote for this product

US$0.017 – 1.70MOQ 10,000 piecesGet a quote WA