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Fastener Sets & Assemblies › Assortment Kits & Mixed Fastener Sets

High-Strength Rock Bolt Split Set for Tunnel Support

Updated 2026-11-04 · Markdown version

Model no. Split set bolt 33 40 42 43 47

US$8.16100–4,999 pieces

US$6.605,000–9,999 pieces

US$3.3610,000+ pieces

MOQ 100 pieces · Final price confirmed in your quote

Tolerance: +0/-0.2mm
Heat Treatment: Annealed
Tensile Strength: >120kN
Yield Strength: >125kN
Surface Treatment: Galvanize or Not
Packing: as Buyer Requirments
Retaining Ring Diameter: 6.5mm

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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
After-sales Service	After Received 1year
Warranty	After Received 1year
Model NO.	Split set bolt 33 40 42 43 47
Type	Filter
Application	Building Construction
Certification	CE, SGS
Condition	New
Tolerance	+0/-0.2mm
Heat Treatment	Annealed
Processing Service	Bending, Welding, Decoiling, Punching, Cutting
Tensile Strength	>120kN
Yield Strength	>125kN
Report	SGS
Quality Control	100% Inspection
Delivery Time	Within 10 Days
Surface Treatment	Galvanize or Not
Packing	as Buyer Requirments
Retaining Ring Diameter	6.5mm
Drawing Force	80kN
Bearing Capacity	65kN
Transport Package	Standard Seaworthy Packing
Specification	33 40 42 43
Origin	China
HS Code	7308400100
Production Capacity	10000 Tons/Month
Accepted Delivery Terms	FOB,CIF,EXW,Express Delivery;
Accepted Payment Currency	USD;
Accepted Payment Type	T/T,Credit Card,Western Union,Cash;
Language Spoken	English,Chinese
Category	Assortment Kits & Mixed Fastener Sets

Technical parameters

item	value
Color	silver, Black
Finish	Bright(Uncoated), Longer Life TiCN
System of Measurement	INCH, Metric
Place of Origin	China
	Hebei
Model Number
Material	Steel
Diameter	5/16IN, 12mm
Capacity	Strong
Standard	GB
Product name	Split Set
Material	Q235,16Mn,20 Mnsi
Length	Customized Length
Diameter	Customized
Application	Mining
Feature	Easy Install
Sample	Availabe
Delivery time	15-30days
Packing	Custom Packaging
Quality	Excellent

Description

High-Strength Rock Bolt Split Set for Tunnel Support is part of our assortment kits & mixed fastener sets range (Fastener Sets & Assemblies).

Key details

Type: Filter
Surface Treatment: Galvanize or Not
Application: Building Construction
Certification: CE, SGS
Warranty: After Received 1year
Condition: New
Tolerance: +0/-0.2mm
Heat Treatment: Annealed

Available configurations include tolerance, heat treatment, tensile strength, yield strength and surface treatment. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 100 pieces at US$3.36 – 8.16 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 High-Strength Rock Bolt Split Set for Tunnel Support?

The listed minimum order is 100 pieces, at US$3.36 – 8.16 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$8.16 for 100–4,999 pieces; US$6.60 for 5,000–9,999 pieces; US$3.36 for 10,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of High-Strength Rock Bolt Split Set for Tunnel Support?

Type: Filter; Surface Treatment: Galvanize or Not; Application: Building Construction; Certification: CE, SGS; Warranty: After Received 1year; Condition: New. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include tolerance, heat treatment, tensile strength, yield strength and surface treatment. 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 assortment kits & mixed fastener sets are available?

The Assortment Kits & Mixed Fastener Sets category lists 3,161 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/fastener-sets-assemblies/assortment-kits-mixed-fastener-sets/

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 →

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US$3.36 – 8.16MOQ 100 piecesGet a quote WA