Flange Bolts Manufacturers

  • ISO9001, IAFT16949 Certificated
  • High-precision CNC MACHINE
  • Precision+/-0.05mm CNC+/-0.02
  • 22Year Experience
  • In House Lab: Sclerometer, Hardness tester, Caliper, Torsion meter, Salt atmosphere testing machine, Projector, Die gage, Image screening instrument spectrometer

12 point flange bolts and nuts

Titanium 12 point Flange Bolts and Nuts

Heatfaster is a professional custom flange bolts and nuts manufacturer and supplier, we produce a variety of 12 Point flange Bolts and nuts (also known as 12-Point Flange Bolts and 12-Point Flange Screws.12-Point Flange Head Cap Screw, or ferry bolts.)We offer flange bolts in inches and metrics. We can also make your nut per your size and plating specifications.


  • Stainless steel – SS302, SS304, SS316, (good tenacity)
  • Steel – C45(K1045), C46(K1046),C20
  • Brass – C36000 ( C26800), C37700 ( HPb59), C38500( HPb58),C27200CuZn37), C28000(CuZn40)
  • Bronze–C51000, C52100, C54400, etc
  • Aluminum – Al6061, Al6063 etc
  • Carbon steel – C1006,C1010,C1018,C1022,C1035K,C1045
  • Alloy steel – SCM435,C10B21,C10B339
  • Other materials– Titanium, UNS C11000 Copper


  • Grade: Grade 4.8,Grade 6.8,Grade 8.8,Grade10.9,Grade12.9 etc
  • Finish: Plain, H.D.G, Black oxide, Chrome, Teflon,dacromet etc
  • Certificates: ISO9001:2015, ISO14001:2015,IATF16949
  • Non-standards: OEM is available, according to customer requirements


  • STANDARD PRODUCTION: Fine Workmanship, strictly controlled within the tolerance range
  • HIGH PRECISION: Good abrasion resistance and corrosion resistance
  • OEM&ODM: non-standard parts development and production expert
  • High quality: High-quality material for long service time

Dimensions& Charts Size

12 point flange bolts and nuts
da max5.
dc max11.814.217.921.82629.934.538.642.8
ds max568101214161820
ds min4.825.827.789.7811.7313.7315.7317.7319.67
k max6.57.5101214161921.524
k min6.257.259.7511.7513.7515.7518.7521.2523.75
r min0.
L1 min7.5912151821242730
h min1.451.752.653.
h max1.722.
12 point flange bolts and nuts

The Benefits of 12 point flange bolts

  • 12-point flange bolts are an alternative head design for hex socket cap screws. The 12-Point design permits this style bolt to be tightened down with a 12-Point socket wrench, which permits higher torque to be applied as compared to a standard internal hex drive socket head cap screw. 12 Point Flange Bolt to be a replacement for any application currently using a socket head cap screw.
  • 12-Point head type is used in tight spaces. The 12-Points have 30° between flats (as opposed to Hex heads which have 60°). This enables increased wrench flexibility (or placement) when manipulating the fastener.
  • The higher strength and larger bearing area under the head of this design provide additional benefits for assemblies over standard hex-head cap screws
  • More aesthetically pleasing than cap hex or socket head cap screws.

Frequently Asked Questions

Also referred to as a 12-Point Flange Head Cap Screw, or a ferry bolt, the flange diameter and head thickness of the 12-Point Bolt is equivalent to the head dimensions of a socket head cap screw, thus permitting the 12-Point Bolt to be a replacement for any application that calls for a socket head cap screw

12-Point Bolts are an alternative head design for hex socket cap screws. The flange diameter and head height are designed to fit a range of applications and counterbored holes are designed for standard hex socket cap screws

Why Choice us

About Us

Shenzhen Heat Hardware Co., Ltd is a leading custom screw manufacturer in China founded in 2000 years. We are specializing in custom screws, security screws, Sems screws, Chicago Screws, Weld Screws, Long screws, Micro Screws, Thumb Screws, Set Screws, Custom bolts, carriage bolts, nuts, and other custom Fasteners. With more than 20years of industry experience. We have serviced over 20000customers including the aerospace industry, automotive industry, electronics, mechanical and electrical products, robots, the Medical industry, communications industry, Outdoor sports products, smart appliances, etc. we can provide one-stop fastener customized service for you no matter what kind of custom fastener you need.

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