Welcome to the Fastener Resource Center. Our Experts have built this site as a central resource by and for the industrial fastener industry and the related supply chains.
Here you’ll find expert advice, technical specifications for industrial fasteners and our “Ask The Experts ” page, where we answer questions and even recount problems we’ve solved for our partners.
The information contained on these pages has been gathered from numerous sources from the Internet and other industry sources and is provided to you free of charge for reference purposes only. For specific advice, please consult a certified engineer.
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The Fastener Resource Center Team
What is the nut thickness of a DIN 439 M24X1.5 hex nut
Dimensional Specifications for Metric DIN 439 Unchamfered Hex Nuts are as follows:
All measurements in millimeters (mm)
All information is strictly informative
Can you tell me if the Robertson square drive recess is tapered like the Drive Bits?
I can find no information regarding this, just a width specification.
Regards
The Robertson square socket recess in the screw head is tapered, as is the head of the Robertson square drive screwdriver / drill bit. This combination creates a wedge, making the screw head and driver head become a perfect fit.
please provide me with the technical specifications of a DIN 6796 M12 Conical spring washers in A4 Stainless Steel.
DIN 6796 Conical Spring Washers for bolted connections A4 Stainless Steel – Dimensional Specifications
The dimensions for DIN 6796 Conical Spring Washers are as follows:
*All measurements in millimeters (mm)*
All information is strictly informative
what are the outside dimensions, the square size and thickness of a 3/8-16 regular steel square nuts hot dip galvanized ?”
Hot Dip Galvanized Square Nuts – Dimensional Specifications
The dimensions for hot dip galvanized square nuts are as follows:
*All measurements in inches*
Hot Dip Galvanized Regular Square Nuts
Basic Major
Dia. of Thread
Across Flats
Across Corners
All information is strictly informative
Do you know the thread length of a A2 Stainless Steel DIN 580 M8 Lifting Eye Bolt ?
thx
The dimensions for DIN 580 Lifting Eye Bolts are as follows:
DIN 580 Lifting Eye Bolt – Dimensional Specifications
*All measurements in mm*
DIN 580 Specifications
All measurements in millimeters (mm)
All information is strictly informative
What are the dimensions of a M10 DIN 436 square washer in A4 stainless steel
DIN 436 A4 Stainless Steel Square Washers – Dimensional Specifications
*All measurements in mm*
The dimensions for DIN 436 A4 Stainless Steel Square Washers are as follows:
DIN 436 Specifications
All measurements in millimeters (mm)
All information is strictly informative
what are the dimensions of a 5/8-11 X 2 brass hex head cap screw?
Hex Head cap Screws – Dimensional Specifications
*All measurements in inches (in)*
For this specific hex head cap screw size the dimensions are as follows:
L = 2”
E = 5/8” (0.6170” to 0.6250”)
F = 15/16” (0.922” to 0.938”)
G = 1.051” to 1.083”
H = 25/64” (0.378” to 0.403”)
LT = 1-1/2”
For all other sizes please refer to the following link: Hex head cap screw dimensional specifications
What is the max thickness of the head of a 10-32 X 3/8 regular thumb screw (No Shoulder)?
Thumb Screws, Plain Pattern (no shoulder) Type B Dimensional Specifications
Size or Basic Screw Diameter
What are the dimensions of a DIN 934 M30X1.5 regular hex nut Class 10 steel ? Width across the flats and the thickness. Thanks”
DIN 934 (ISO 4032)- Hexagon Nuts – 0.8d Dimensional Specifications
*All measurements in millimeters (mm)*
*All information is strictly informative
Can dacrotized coated deck screws be used with red cedar?
Thank you for your question. We do not recommend dacrotized screws for cedar as we have had feedback indicating that some staining/streaking may occur. We do offer options that might be of interest to you:
Buy Stainless Steel Deck Screws
Buy Ceramic coated deck screws
What size bit is used to drive a stainless steel M4-0.7 X 10mm button head torx with pin security machine screw ?
The driver size for a M4 button head torx with pin security drive screw is a T15 Torx Security (Pin) bit.
What are the dimensions of a DIN 934 M30X1.5 Regular Hex Nut Class 10 Steel (Width across the flats and the thickness)? Thanks”
what is the difference between USS and SAE flat washers?
SAE flat washers have a slightly smaller inside diameter and outside diameter than USS flat washers. In addition SAE flat washers are typically slightly thinner than USS flat washers. See the chart below for dimensional specs for both washer types:
DIAMETER
DIAMETER
What is the thread length (machine screw and wood screw threading) of a metric DIN 88149 M8X80 Hanger Bolt?
DIN 88149
Dimensional Specifications of Metric DIN 88149 – Hanger Screws / Hanger bolts:
* All sizes in mm;
I have a custom bolt specification that calls for a 310 grade stainless steel. All of my usual sources are “no quoting”. Any idea why?
I suspect that you are reaching out to manufacturers that are (cold?) headers as opposed to makers that would mill the parts. Grade 310 Stainless Steel is much better suited to machining as opposed to cold heading. There are other characteristic of a Grade 310 Stainless Steel that might make it difficult to replace with a more standard 304 (18-8) Stainless Steel – for instance if your application requires high temperature service. If you can be more specific as to what your bolting application is, perhaps we can offer suggestions for suitable stainless steel grades that would be better suited to cold heading.
What would be the force needed to shear a 5/16-18 diameter 18-8 stainless steel bolt?
We have published a paper titled “Stainless Steel and Stainless Steel Fasteners: Chemical, Physical and Mechanical Properties” that you can find by following this link:
http://www.aspenfasteners.com/v/vspfiles/files/docs/stainless_specification.pdf
I believe that the information you are looking for can be found on page 13, table 13.
If you need any further information, please do not hesitate to contact us.
On page 13, table 13 these is information about shear values.
Hello I’m in the Mechanical Engineering program at Forsyth Technical CC. I have a multi-screw head and square thread presentation and was trying to find any and all information on the following:
1) Clutch type A screw head
2) Multi-spline or Bristol screw head
3) Slab Head screw/bolt head
4) Phillips screw head
5) Square threads
Mainly I’m looking for pictures/history/ process of manufacturing/ purpose of each/ etc.
Any help would be greatly appreciated.
Sincerely,
Justin Burns
Hello Justin,
It would appear to me that what you are looking for is information on fastener drive systems. Whereas we here at Fastener Experts are good at solving particular challenges that fastener users have (i.e. what platings to use in specific environments; what fasteners to consider for a particular assembly requirement), your question is best answered by existing resources already on the Internet.
Let me help you get started:
A great overview of fasteners in general can be found at this Wikipedia page: http://en.wikipedia.org/wiki/Screw.
An excellent list of fastener drive types can be found at this Wikipedia page: http://en.wikipedia.org/wiki/List_of_screw_drives. On this page, I am seeing the drives you are looking into: Clutch, multi-Spline/Bristol, Phillips and Square. The only one missing seems to be the “Slab Head” and to be honest, I haven’t yet come across this one in 30 years in this field. However, this page seems to have an entry for a Slab Head and wouldn’t you know it, it looks just like it sounds: http://allied1.com/harper.htm.
Basically, between Google and Wikipedia, you’ll be able to find everything you need. If you need illustrations, you can find those on the Aspen Fasteners site.
Good luck with your studies over at Forsyth Technical (in North Carolina, right? Yeah, I googled your school!) and let us know if there is anything else that we can help you with.