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Metis High Quality Self Drilling Hollow Threaded Rod Coupling

Updated 2026-11-04 · Markdown version

Model no. R51L

US$1.44 – 3.00 / piece

MOQ 1 piece · Final price confirmed in your quote

Material: 41cr4
Head Style: Round
Standard: SGS, CE
Grade: 12.9
Finish: Black
Length(M): 220
Outside Diameter mm: 63
Thread: L

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

Material	41cr4
Type	T & R, Left or Right
Connection	Common Bolt
Model NO.	R51L
Head Style	Round
Standard	SGS, CE
Grade	12.9
Application	Mining, Tunneling, Deep Foundtion Rock Support
Finish	Black
Length(M)	220
Outside Diameter mm	63
Weight(Kg/PC)	2.00
Name of a Part	Anchor Coupler
Condition	New
Thread	L
Transport Package	Packed in Cartons
Specification	SGS, CE
Origin	China
HS Code	7215
Production Capacity	600000PCS/Month
Solid - DIA	16mm, 17mm, 18mm, 19mm, 20mm, 22mm, 25mm, 32mm, 40mm
Hollow - DIA	25mm/12, 32mm/16
Category	Self-Drilling & Tek Screws

Technical parameters

Size	Outer Dia.(mm)	Length(mm)	Weight(Kg)	Thread
R51L/1	63	140	1.32	ISO 10208
R51L	63	170	1.70	ISO 10208
R51N/1	63	200	1.90	ISO 10208
R51N	63	200	2.00	ISO 10208

Description

Metis High Quality Self Drilling Hollow Threaded Rod Coupling is part of our self-drilling & tek screws range (Screws).

Key details

Type: T & R, Left or Right
Standard: SGS, CE
Material: 41cr4
Grade: 12.9
Thread: L
Head Style: Round
Finish: Black
Connection: Common Bolt

Available configurations include material, head style, standard, grade and finish. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1 piece at US$1.44 – 3.00 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 Metis High Quality Self Drilling Hollow Threaded Rod Coupling?

The listed minimum order is 1 piece, at US$1.44 – 3.00 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 Metis High Quality Self Drilling Hollow Threaded Rod Coupling?

Type: T & R, Left or Right; Standard: SGS, CE; Material: 41cr4; Grade: 12.9; Thread: L; Head Style: Round. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, head style, standard, grade and finish. 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 self-drilling & tek screws are available?

The Self-Drilling & Tek Screws category lists 5,114 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/screws/self-drilling-tek-screws/

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

More about us → · Request a sample or custom quote →

Request a quote for this product

US$1.44 – 3.00MOQ 1 pieceGet a quote WA