Lindapter HB16-3 M16 Hollo-Bolt Size 3

Type HB Mild Steel Bright Zinc Plated

Lindapter

Product Code: 18HB163

Model Code: HB16-3

Brand: Lindapter

Finish: Zinc Plated

(Include VAT?)

Boxes of 25
Individual Items

£21.08 inc VAT
( Priced Each )

OUT OF STOCK

Delivery expected in 2/3 days

Sorry! This product is only sold in multiples of 0.

Order by 2pm for Next Day Delivery (Mon-Fri)

FREE Standard Delivery on Orders over £100*

STEEL CLAMPING SYSTEMS / HOLLOW SECTION BLIND FIXINGS

Lindapter Type HB16-3 Hexagonal Head Hollo-Bolt (M16 x 112mm)

The Lindapter Type HB16-3 Hollo-Bolt is an industry-leading, high-reliability structural blind fixing designed specifically for executing connections to rectangular, square, or circular steel hollow shape sections where access is restricted to one side only. Expertly engineered from robust carbon steel, this heavy-duty M16 cavity fastener features an expanding sleeve and interlocking grooved cone mechanism that prevents loosening over long-term structural lifespans. This extended length variant (Size 3) provides an engineered clamping range of 50mm to 71mm, serving as a non-destructive, time-saving alternative to traditional structural beam welding or specialised through-bolting practices.

CRITICAL STRUCTURAL MANDATE: DRILLING & TORQUE PROTOCOLS

To fully comply with certified design configurations and achieve published load limits, clearance holes must be drilled through the pre-drilled fixture and structural profile to a precise diameter of 26mm (+2.0 / -0.2mm). For structural safety, the outer ply section thickness (min t) must be at least 8mm. Ensure adjacent hole distances preserve a minimum pitch centre (min A) of 55mm and a definitive edge profile boundary clearance (min B) of 20mm. During on-site installation, firmly clamp the external base collar using an open-ended 36mm spanner. Utilising a calibrated manual torque wrench with a 24mm socket on the central hex bolt head, execute progressive tightening strictly to the designated mechanical threshold of 190 Nm.

TECHNICAL SPECIFICATION DRAWING & KEY DIMENSIONS

Lindapter Type HB16 hexagonal head Hollo-Bolt dimensional layout diagram

Key	Dimension Description	HB16-3 Value
Z	Nominal Internal Bolt Size	M16
W	Clamping Thickness Grip Capacity	50 - 71 mm
B	Maximum Extended Body Length	112 mm
H	Exposed Hex Head Collar Height	18 mm
S	Sleeve Outer Profile Diameter	25.75 mm
A/F	Spanner Across Flats Interface	36 mm
D	Main Collar Outside Diameter	38 mm

TECHNICAL DATA & DESIGN CAPACITIES

Specification Parameter	Engineered Values & Structural Standards
Ambient Safe Tensile Load	30.0 kN held at a conservative 5:1 integrated safety factor limit
Ambient Safe Shear Load	21.0 kN held at a conservative 5:1 integrated safety factor limit
Eurocode 3 Tensile Resistance (Ft,rk)	84.3 kN characteristic baseline capacity (ETA-10/0416 certified structural limit)
Eurocode 3 Shear Resistance (Fv,rk)	139.0 kN characteristic baseline capacity (ETA-10/0416 certified structural limit)
Sleeve Material Performance	Carbon Steel configuration delivering a material strength threshold of 430 N/mm²
Structural Dynamic Rating	Fully tested and validated in compliance with EN 1993-1-9 structural parameters

KEY STRUCTURAL PERFORMANCE ADVANTAGES

One-Sided Blind Installation: Rapid connection deployment completely eliminates the logistical necessity for hollow section internal access provisions.
High Clamping Force Mechanism: Internal assembly incorporates an optimised high clamping force design specialised for heavy-duty structural M16 diameters.
Interlocking anti-loosening Cone: Integrated cone layout features surface grooves that physically lock the internal parts under full tightening torque limits.
Non-Destructive Integration: Fully eliminates specialised welding procedures, safeguarding initial beam structural profiles and anti-corrosion barrier coatings across connections.

Purchase Lindapter Hexagonal Head Hollo-Bolts

Data Sheet

Installation Guide

Logistics Excellence

Fast, Reliable Delivery Nationwide

Delivering structural fixings, builders metalwork, tools, and site essentials straight to your project via our dedicated regional fleet and nationwide carrier partners.

TRUCK

DPD Pickup Point

Flexible

Collect small tool boxes, boxed fixings, and hardware from thousands of local shops and 24/7 lockers on your own schedule.

Flat Rate £5.95 + VAT

Greener, lower-cost collection with zero waiting on site.

Direct Site Delivery

Direct dispatch to your commercial site, project boundaries, or workshop door across the UK mainland via tracked road freight.

Standard Rate £9.95 + VAT

FREE Standard Shipping on qualifying orders over £100!

Next Day Dispatch

Urgent material requirements. Stock items are priority-picked, packed, and assigned to rapid-transit freight networks.

Order Cut-Off Order by 2:00 PM (Mon–Fri)

Fast-tracked transit for critical construction path deadlines.

Active construction site framing and rapid transit transport delivery truck keeping builds moving

How We Keep Your Builds Moving

We operate our own dedicated logistics vans out of Luton alongside leading national freight carriers, ensuring full trace visibility from our warehouse shelves straight to site.

01.

Instant Hub Sorting: Approved orders pass straight to active pick queues via our localised automated barcode stock framework.

02.

Heavy Component Packing: Structural products are safely stored in industrial reinforced cartons or strapped securely to pallets to fully safeguard fine threads and anti-corrosion zinc surfaces.

03.

Tailgate On-Site Offloading: Bulk shipments drop cleanly at your structural site boundary line via integrated tail-lift carrier transport systems.

Logistics Scope & Out-Of-Zone Shipments

Standard courier pricing arrays map explicitly to structural mainland UK postal grids. Supplementary transit routing variables, variable lead times, or specialised carrier adjustments apply across high-altitude or outlying maritime zones:

Scottish Highlands & Islands: Postcode structures matching KW, IV, PA, and PH configurations map to alternative transit grids. Please review checkout calculations for accurate real-time weights.
Northern Ireland, Isle of Man & Channel Islands: Water-crossing logistical paths require clean custom manifesting lines.
Heavy Oversized Pallets: Extended multi-ply girder connectors, structural space straps, 3m channel unistrut, or high-volume masonry hangers pass through dedicated heavy haulage grids.

Commercial & Trade Governance

General Terms & Conditions of Sale

Standard trading terms governing trade accounts, component supply contracts, delivery obligations, and commercial agreements with Metro Fixings Ltd.

LEGAL

Credit Account Terms

Commercial credit accounts are strictly payable 30 days end of month following invoice date, subject to approved credit limit boundaries.

Title Retention

Full legal title and ownership of all supplied hardware remains with Metro Fixings Ltd until all outstanding invoices are cleared in full.

Site Logistics

Delivery schedules are provided in good faith. The buyer is responsible for arranging safe offloading facilities at the designated site location.

Notice of Claims

Consignment shortages or damaged goods must be recorded on delivery notes and formally reported to our trade desk within 24 hours.

1. Contract Formation & Quotations

All contracts entered into with Metro Fixings Ltd incorporate these Terms and Conditions of Sale to the exclusion of all other terms, including any buyer purchasing conditions:

Quotations issued by Metro Fixings Ltd constitute an invitation to treat and remain valid for 30 days unless formally withdrawn or adjusted prior to written acceptance.
Orders placed by telephone, email, or web portal are binding only upon written confirmation or dispatch of goods from our distribution hubs.
Bespoke fabrications, custom-threaded components, or non-catalogue items sourced specifically for site requirements cannot be cancelled once manufacturing or procurement has commenced.

2. Pricing, Invoicing & Credit Terms

Price Variances: Prices are quoted exclusive of UK VAT and delivery charges. We reserve the right to revise prices prior to dispatch to reflect raw material fluctuations or transport cost increases.

Credit Accounts: Approved trade credit accounts operate on strict 30 days net terms (payable by the end of the month following the invoice date).

Late Settlement: Overdue account balances incur statutory interest under the Late Payment of Commercial Debts Act at 8% above the Bank of England base rate, alongside recovery administration costs.

3. Delivery, Risk & Site Access

Deliveries are conducted via our fleet or accredited courier transport under the following conditions:

Delivery Dates: Target arrival dates are provided as estimates. Metro Fixings Ltd accepts no liability for direct or indirect losses, site delay penalties, or standing time costs caused by transit disruptions.
Risk Transfer: Risk of damage or loss passes to the buyer upon completion of delivery offloading at the designated site coordinates or trade counter collection.
Site Unloading: The customer must ensure safe site access and adequate mechanical unloading gear (forklifts or site teams) for bulk pallets or heavy structural fixings.

4. Retention of Title

Legal and beneficial title to all supplied goods remains with Metro Fixings Ltd until the customer has paid for them in full, together with all other sums due on any account. Until title passes, the buyer must store the goods separately, identifiable as Metro Fixings Ltd property, and keep them fully insured.

5. Warranties & Limitation of Liability

We warrant that goods conform to manufacturer specifications and relevant UK engineering compliance standards. Our liability for defective items is limited strictly to replacement or credit value refund. Under no circumstances shall Metro Fixings Ltd be liable for loss of profit, operational downtime, or indirect consequential damage.

Commercial Accounts Desk

Trade Account Support

Need to discuss credit terms, request statement copies, or query an invoice line?

Call our accounts office directly on 01707 375172 or email sales@metrofixings.co.uk.

Registered Trading Office

Metro Fixings Ltd
Unit 14 Windmill Trading Estate
Thistle Road, Luton
Bedfordshire, LU1 3XJ

Company Reg: 08434688
VAT Number: GB 158 5347 18

Governing Jurisdiction: All commercial contracts and disputes shall be governed by and construed in accordance with English Law, subject to the exclusive jurisdiction of the Courts of England & Wales.