Tensile strength psi 307a low carbon steel. Inches are measured threads per inches.
Types Of Bolts Nuts And Washers For National Bolt Amp Nut
How to identify a bolt. Print this page. In the picture to the left you can see 3 bolts that look very similar at first glance when lying around your work bench. As you can see the thread pitch of the coarse metric bolt is much finer than a coarse thread standard bolt. The browning ab3 stalker rifle. The first two are 14 diameter and the last one is 6mm. It also features a larger curved bottom metal surrounding the magazine well which is not only elegant but easy to identify as on an x bolt.
In 1994 browning introduced the boss ballistic optimizing shooting system and with it the a bolt ii. If you do not have a magnet you can still identify grade 8 bolts by brushing the head of the bolt using a wire brush and counting its radial lines. Fasteners are identified by four or five attributes. There are six radial lines on the heads of grade 8 bolts. It might have been wrong to refer to a cheat sheet in high school calculus class but nobody is going to blame you for not being able to identify all of the various types of fasteners screw heads drive types nut and washer styles available todayi ran into this fastener type chart created by bolt depot while trying to identify a mystery drive shape used to fasten a part i wanted to remove. Yield strength psi min.
We have most owners manuals online. Hex bolt identification markings and strength chart table guide. If it takes eight screws to mount the bases it is an x bolt. Some bolts share identical head identification and have significantly different strengths. Proof load psi min. Information on how they are written can be found on our how fastener measurements are notated page.
Grade 2 low or medium carbon steel. Look for bolt markings. Length is measured from under the head. For instance 10 x 110 109 would be a hex head capscrew 20 mm in diameter 110 mm long grade 109. Second measure the pitch pitch is threads per unit. Bolt grade markings and strength chart.
Head marking grade and material nominal size range inches mechanical properties. You identify grade by looking at the head of the bolt. 14 thru 4 na. Just remember that each scope base is held down by four screws four at the front and four at the back. Type material diameter length and thread pitch or count machine thread fasteners only. To find your serial number you will need to refer to your owners manual.
To determine the size of a bolt. How to identify a metric bolt. Hex bolt identification markings and strength chart. Metric are measured thread per millimeter. Identifying bolts by thread pitch. Diameter and length are identified in millimeters.
Diameter is in either inches not decimal or millimeter. First measure the diameter. This page describes what these attributes represent. To determine the size of a bolt. Hex bolts will have 109 equivalent to sae grade 8 88 equivalent to sae grade 5 or no markings equivalent to sae grade 2. The a bolt ii model is currently in production.
Additonal information on bolts is located at the bottom of the webpage.
Gallery of How To Identify A Bolt
