16 Sizes In Stock

Titanium Hex Flange Head Bolts

Grade 5 titanium hex flange head bolts in M6 with an 11 mm integral flange and an 8 mm hexagon, in lengths from 10 mm to 90 mm.

Ti-6Al-4V Grade 5M610–90 mmExternal hex across flats 8 mm

Overview

What This Range Is

An external hexagon head with the flange formed as part of the head. The external drive lets the bolt be run with a socket or a spanner rather than a key, which matters where access is from the side or where the joint is made and broken often. The integral flange spreads the load and removes the separate washer.

Every size in the range is made in Grade 5 titanium. The head geometry and the drive size are listed for each size in the table below, taken from the product data for that size rather than from a general specification.

Problems This Range Solves

  • Joints made and broken often where an internal drive would wear or pack with dirt
  • Side access positions where a socket or spanner is the only practical tool
  • Assemblies where the separate washer is a part number and a handling step worth removing
  • Outdoor and wash down service where a zinc plated flange bolt would corrode at the flange

Range At A Glance

Material
Ti-6Al-4V Gr.5
UNS
R56400
Head style
Hexagon head with an integral flange
Drive
External hex across flats 8 mm
Threads
M6
Lengths
10–90 mm
Sizes in stock
16
Price per piece
$1.00–$2.50
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Titanium Hex Flange Head Bolts in Grade 5 titanium

Photograph of the hex flange head bolts range. Head dimensions and length vary by size as listed below.

Head Geometry

Dimensions By Thread Size

ThreadHeadDriveLength rangeSizes
M6Flange 11 mm, hex 8 mmHex 8 mm10–90 mm16

Full Size List

All 16 sizes with SKU dimensions and price per piece. Click any size for the full detail page.

ProductSKUThreadLengthHeadDrivePrice / pc
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*10TiHFH610M610 mmFlange 11 mm, hex 8 mmHex 8 mm$1.00
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*15TiHFH615M615 mmFlange 11 mm, hex 8 mmHex 8 mm$1.00
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*20TiHFH620M620 mmFlange 11 mm, hex 8 mmHex 8 mm$1.00
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*25TiHFH625M625 mmFlange 11 mm, hex 8 mmHex 8 mm$1.00
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*30TiHFH630M630 mmFlange 11 mm, hex 8 mmHex 8 mm$1.20
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*35TiHFH635M635 mmFlange 11 mm, hex 8 mmHex 8 mm$1.20
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*40TiHFH640M640 mmFlange 11 mm, hex 8 mmHex 8 mm$1.20
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*45TiHFH645M645 mmFlange 11 mm, hex 8 mmHex 8 mm$1.20
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*50TiHFH650M650 mmFlange 11 mm, hex 8 mmHex 8 mm$1.50
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*55TiHFH655M655 mmFlange 11 mm, hex 8 mmHex 8 mm$1.50
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*60TiHFH660M660 mmFlange 11 mm, hex 8 mmHex 8 mm$1.50
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*65TiHFH665M665 mmFlange 11 mm, hex 8 mmHex 8 mm$1.80
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*70TiHFH670M670 mmFlange 11 mm, hex 8 mmHex 8 mm$1.80
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*75TiHFH675M675 mmFlange 11 mm, hex 8 mmHex 8 mm$1.80
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*80TiHFH680M680 mmFlange 11 mm, hex 8 mmHex 8 mm$2.00
Gr.5 Ti6Al4V Titanium Bolt Hex Flanged Head M6*90TiHFH690M690 mmFlange 11 mm, hex 8 mmHex 8 mm$2.50

Material

Ti-6Al-4V Grade 5 Reference Data

Published values for the alloy and for ASTM B348. They describe the material, not a batch certificate.

Alloy designationTi-6Al-4V, ASTM Grade 5
UNS numberR56400
Nominal composition6 percent aluminium, 4 percent vanadium, balance titanium
Alloy classAlpha beta alloy
Density4.43 g/cm³
Minimum tensile strength895 MPa / 130 ksi
Minimum yield strength828 MPa / 120 ksi
Minimum elongation10 percent
Modulus of elasticityAbout 114 GPa
Magnetic responseNon magnetic
Melting rangeAbout 1604 to 1660 °C

Why It Matters For This Range

  • Roughly 44 percent less mass than the same fastener in steel, which is the whole reason the range exists
  • Yield strength high enough to replace a medium strength steel fastener rather than an aluminium one
  • A stable oxide film that re-forms in air or water, so chloride service does not pit the fastener
  • Non magnetic, so the fastener can sit next to sensors and imaging equipment
Titanium Grades And Standards

Comparison

How This Range Compares With The Others

RangeHeadDriveThreadsLengthsSizes
Hex Flange Head BoltsHexagon head with an integral flangeExternal hex across flats 8 mmM610–90 mm16
Self Tapping ScrewsPan head with a wide integral bearing faceTorx internal driveM4 M512–25 mm8
Socket Head Cap ScrewsCylindrical cap headTorx internal driveM5 M6 M810–95 mm39
Saucer Head ScrewsLow profile saucer head with a flanged bearing faceTorx internal driveM5 M68–90 mm23
Saucer Head BoltsLow profile saucer head with a flanged bearing faceTorx internal driveM8 M1012–90 mm28

Use Guide

Fitting Titanium Fasteners

Use anti seize on the threads

Titanium galls readily against titanium and against stainless. A dry film or copper free anti seize on the thread and under the head keeps the torque to tension relationship predictable and lets the joint be broken later.

Torque to a titanium figure not a steel figure

Do not carry over a torque value from a steel or stainless fastener of the same size. The friction behaviour is different and the safe clamp load has to be set for the alloy and for the lubricant actually used.

Seat the drive fully before applying load

Push the Torx key or the socket right to the bottom of the recess before turning. A partly seated drive concentrates load on the top edge of the recess.

Watch galvanic pairings

Titanium is a noble metal. Where it is bolted directly to aluminium or magnesium in a wet environment, isolate the joint or accept that the lighter metal will carry the corrosion.

Keep the bearing face clean and flat

A wide flange or saucer face only works if it lands on a flat clean surface. Swarf or paint under the head shifts the clamp load off centre.

FAQ

Questions About Titanium Hex Flange Head Bolts

What material are these hex flange head bolts made from
Grade 5 titanium, the Ti-6Al-4V alloy carried under UNS R56400. It is specified in ASTM B348 with a minimum tensile strength of 895 MPa and a minimum yield strength of 828 MPa.
Which thread sizes and lengths are available
M6 in lengths from 10 mm to 90 mm, 16 sizes in total. The full table with head dimensions and prices is above.
How are the head dimensions measured
The head figures given for each size are the values listed for that product. The flange diameter is the outside diameter of the integral flange and the hex figure is the across flats dimension of the hexagon.
Can I torque these to the same value as a steel fastener of the same size
No. Set the torque for titanium and for the lubricant actually being used. Titanium galls against titanium and against stainless, so an anti seize on the thread and under the head is what keeps the torque to tension relationship predictable.
Are they magnetic
No. Titanium and its alloys are non magnetic, which is one reason these are specified around sensors and imaging equipment.
Do you supply sizes outside this range
Yes. This range is what we hold in stock. Other diameters lengths and head styles are made to order from bar, and other titanium grades listed on the grades page can be used.
What is the price
The listed sizes run from $1.00 to $2.50 per piece. Email [email protected] with the quantity for a full quotation.

Quote The Hex Flange Head Bolts You Need

Send the thread size the length and the quantity. If the size is not in the range above we will quote it from bar.

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