MF FASTENER INDUSTRIES LLC

Emirates Modern Industrial Area, Umm Al Quwain, U.A.E. · P.O. Box 7071 · ISO 9001:2015 · Technical Library

TECHNICAL LIBRARY

The fastener reference

Every table here is computed from the standard's own formulas, every guide is written by people who make and test fasteners, and every page says plainly what it is for and what it is not. Bookmark it. Come back when the drawing is unclear.

Reference tools

Know Your Grade

Which bolt do I need? Five plain questions — what it's for, where it is — and we tell you exactly what to ask for. Don't know is an answer.

Project fastener estimator

Enter the project — hangars, PEB, towers, wind, guardrail, ports, pipeline — and get the full bill of fasteners, every line explained. Access code required.

Guardrail bolts

Button head, oval shoulder: dimensions, A307 data, and an animation of the bolt going into the W-beam rail.

Lifting with a U-bolt?

Preliminary size for U-bolts used as lifting points — the factors, the legs, the crown, and what the engineer must still check.

Thread & dimensions

Pitch, stress area, tap drill, across-flats, head and nut heights — metric and inch.

DIN · ISO · ASTM

Which standard is which, and which grade is which, across the three systems on Gulf drawings.

Bolt length

Grip, washers, nut and projection → the standard length that fits, with a thread-reach check.

Torque & preload

A printable table for every size in the grade and finish you are tightening.

Weight & quantity

Kilograms per hundred, carton and pallet estimates for purchasing and logistics.

Coating selector

The right finish for Gulf coast, industrial and immersion service — with galvanic warnings.

Grade & load

Which grade carries the load — proof, tensile and shear for every class.

Build your bolt

Draw the anchor bolt to your dimensions and send it as your enquiry.

Bolt Lab

Animated explainers on how fasteners behave — the mechanism first, the standard named, what to ask for.

Galvanizing & thread fit

Why hot-dip galvanized nuts are tapped oversize, and why a Z nut must never go on a bare bolt. ISO 10684.

Torque is not preload

Where the torque goes, and why the same figure gives a different clamp load on every finish.

Head markings chart

Click a bolt head: grade, standard, mechanical properties and the matching nut. Metric, SAE and ASTM.

How anchor bolts fail

Steel failure, concrete cone breakout and pull-out — and why the plate washer is not optional.

Coating life in the Gulf

How many years the zinc gives you here, by environment and coating thickness. ISO 12944-2.

Flange tightening sequence

The star pattern and the graduated passes, animated for any bolt count. ASME PCC-1 Appendix F.

Why bolts loosen under vibration

The Junker test animated, and which locking methods actually hold. Split washers do not.

How much thread is enough

Thread engagement by material — set the depth and see whether the bolt breaks or the thread strips.

How to read a test certificate

A sample EN 10204 3.1 certificate, field by field: what each line means and what a bad one looks like.

How a bolt is made

Cold heading at the mill, bar-to-bolt at MF, and why a rolled thread beats a cut one. Animated.

Recently added

What changed in the library, newest first

NEW · Guardrail bolts — data sheet and fitting animation

NEW · Lifting with a U-bolt? — the Clamp Fit lifting check

NEW · Know Your Grade — answer five questions, get the grade, nut, washer and finish

NEW · Bolt Lab — how a bolt is made. The ten-part series is complete

NEW · Bolt Lab — how to read a test certificate

NEW · Bolt Lab — how much thread is enough

NEW · Bolt Lab — why bolts loosen under vibration

NEW · Bolt Lab — the flange tightening sequence

NEW · Bolt Lab — coating life in the Gulf

NEW · Bolt Lab — how anchor bolts fail

NEW · Bolt Lab — torque vs preload, and the head markings chart

NEW · Bolt Lab — animated explainers, starting with galvanizing & thread fit

NEW · Technical library — six reference tools, product knowledge and guides

NEW · Failure modes guide — six mechanisms with prevention

NEW · Bolt Grade & Load Calculator

NEW · Build Your Bolt configurator

Something missing?

If the answer you need is not in the library, send the question through the Get A Quote page and an engineer will reply. Good questions become new library entries.