Comments for ºÚÁÏ´óÊÂ¼Ç / Quality Bolts, Screws, & Studs Thu, 04 Sep 2025 15:47:17 +0000 hourly 1 https://wordpress.org/?v=6.9.4 Comment on Understanding Metric Bolt and Screw Grades (and Head Markings) by Frank Rizzo /understanding-metric-bolt-and-screw-grades-head-markings/#comment-7175 Fri, 09 Feb 2024 00:40:48 +0000 /?p=348#comment-7175 In reply to Richard.

What? 0.8 mm is not about 20 tpi, not at all. 20 tpi is 1.27 mm pitch, which yes, is very close to regular M8x1.25

]]> Comment on Understanding Metric Bolt and Screw Grades (and Head Markings) by Joe Pinchback /understanding-metric-bolt-and-screw-grades-head-markings/#comment-7022 Mon, 29 Jan 2024 21:23:51 +0000 /?p=348#comment-7022 In reply to Patrick.

Patrick, check out this blog post. It has definitions for many of the terms we use: /guide-to-fastener-terminology/

]]> Comment on Understanding Metric Bolt and Screw Grades (and Head Markings) by Patrick /understanding-metric-bolt-and-screw-grades-head-markings/#comment-6986 Sat, 27 Jan 2024 20:58:53 +0000 /?p=348#comment-6986 Very well-presented information. Easy to follow and understand. One addition that would make this perfect is a short list of definitions of some of the more technical terms used, just so it isn’t necessary to go look them up elsewhere. Otherwise, nicely done.

]]> Comment on What Do Screw and Bolt Head Markings Mean? by Richard /what-do-screw-and-bolt-head-markings-mean/#comment-6665 Tue, 09 Jan 2024 02:42:44 +0000 /?p=359#comment-6665 I have a bolt with 3 radial lines. It is a manufacturer’s replacement for a shear bolt on a snowblower. Unfortunately, I’m not able to find the trademark in the pdf file. I tried to show what it looks like, but this editor deletes it. Is there anything special to indicate if a bolt is for shear purposes?
Can I use any 3 line radial bolt as a replacement? If not how do I tell if a bolt is capable of being used in a shear situation? Thanks for your help

]]> Comment on Proof Load, Yield Strength, and Tensile Strength of Fasteners by Patrick /proof-load-yield-strength-and-tensile-strength-of-fasteners/#comment-6650 Mon, 08 Jan 2024 01:20:32 +0000 /?p=345#comment-6650 This is really great info, and very clearly explained. Do you sell guides to bolt information? I am trying to determine the torque required for some automotive bolts for seats and seatbelts. For example, bolts marked TY 8.8.

]]> Comment on The Difference Between 1A, 2A, and 3A Threads by Shay Popper /difference-between-1a-2a-3a-fastener-threads/#comment-5904 Tue, 28 Nov 2023 06:46:10 +0000 /?p=338#comment-5904 will 3A fit 2B thread class of fit?
To be accurate, will
#8-32 UNC-3A 4 lead thread with 4 starts bolt
Will fit
#8-32 UNC-2B 4 lead thread with 4 starts nut
without damaging the thread of the Nut or Bolt?

]]> Comment on The Difference Between 1A, 2A, and 3A Threads by Anuruddh Singh /difference-between-1a-2a-3a-fastener-threads/#comment-5467 Wed, 18 Oct 2023 10:36:20 +0000 /?p=338#comment-5467 in our drawing given size 3/416 unf 2a then after plating which size gauge required for inspection kindly suggest

]]> Comment on What Do Screw and Bolt Head Markings Mean? by Mike /what-do-screw-and-bolt-head-markings-mean/#comment-5294 Wed, 27 Sep 2023 18:59:59 +0000 /?p=359#comment-5294 In reply to Gregorio Abellera.

I have a broken bolt originating on a 1972 Norton motorcycle with headstamp showing FCF on upper half of head and an S below. Can you tell me the grade of this bolt, anyone?

]]> Comment on Understanding Metric Bolt and Screw Grades (and Head Markings) by Patrick /understanding-metric-bolt-and-screw-grades-head-markings/#comment-5097 Thu, 07 Sep 2023 08:46:43 +0000 /?p=348#comment-5097 In reply to Paul Mathews.

I have one of these bolts with the marking 8.8 W G. My socket wrench set only goes up to 14mm what size do I need to unfasten this screw/bolt?
It’s part of my walker the wheel section.

]]> Comment on Different Bolt Grades and Their Applications by Phil /different-bolt-grades-and-their-applications/#comment-4913 Sun, 13 Aug 2023 11:48:08 +0000 /?p=818#comment-4913 Different grades have certain torque requirements based on bolt grading or material being bolted in to OR both?

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