How wide is a #12 bolt?

12-Bolts to Glory The GM 12-bolt debuted in 1965 and was mass-produced until 1972. It features an 8.875-inch ring-gear carrier held in place with two internal main caps. The pinion gearshaft measures 1.625 inches in diameter and is shimmed to achieve the proper pinion depth.

What is the diameter of a number 12-bolt?

The diameters listed in the chart below are in fractions of an inch, so the #12 is just shy of 1/4 inch.

How wide is a 12-bolt rear end?

The rearend cover on passenger car 12-bolt rearends is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall. It also has an upsidedown, V-shaped protrusion that is there to direct oil to the carrier bearings.

What is a bolt width?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

What is a #12 bolt?

12-Bolts to Glory The GM 12-bolt debuted in 1965 and was mass-produced until 1972. It features an 8.875-inch ring-gear carrier held in place with two internal main caps. The pinion gearshaft measures 1.625 inches in diameter and is shimmed to achieve the proper pinion depth.

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What is a #12 screw?

The term 12-24 also come from the Unified and American Screw Threads for Bolts, Nuts, and Machine Screws standards. The number “12” is used as a size designator with no numerical meaning. … You can identify a 12-24 screw by measuring the diameter with a ruler at slightly less than 7/32 inches (5.6mm).

Whats the difference between a 10 bolt and 12-bolt rear end?

First, the 10-bolt’s pinion shaft diameter is 1.438 (25 splines) while the 12-bolt is 1.625 (30 splines) which makes the 12-bolt 13 percent larger in diameter and therefore stronger. … The 8.2 uses a 28-spline axle (1.20 inches in diameter) while the 12-bolt uses a 30-spline axle (1.625 inches in diameter).

How wide is a GM a body rear end?

This Ford 9″ Rear end is specifically designed for direct replacement in a 1964-1967 GM “A” Body (Chevelle, Cutlass, El Camino, Skylark, LeMans, etc.) It is manufactured by the experts at GearFX Driveline to the highest standards to provided flawless performance and easy installation. Flange to Flange width is 59.5″.

How can you tell a 12-bolt rear end?

The easiest way to identify a 12-bolt rearend is obviously by the 12 bolts holding the rear cover onto the axle housing. The pinion shaft on passenger-car differentials is 1-5/8-inch in diameter and the cover is oval, measuring 10-15/16-inches wide by 10-5/8-inches tall.

What size head is a M12 bolt?

Dimensions for DIN931 Hex Head Bolt

Diameter (d) Pitch Across Flats (s)
M8 1.25mm 13mm
M10 1.5mm 17mm
M12 1.75mm 19mm
M14 2mm 22mm

What size is a number 10 bolt?

The number “10” is a size designator with no numerical meaning. The number “32” refers to 32 threads per inch. You can identify a 10-32 screw by measuring the diameter at exactly 3/16″ (4.76 mm).

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What do the dimensions of a bolt mean?

The size of a metric bolt is specified using pitch, diameter, and length in millimeters. For example, in M8-1.0*20, the “M” means the Metric thread designation, the digit 8 refers to the Nominal diameter (in millimeters), 1.0 refers to the pitch, and 20 refers to the length.

What does M10 bolt mean?

M10-1.0 x 20

M = This designates the fastener is a metric size. 10 = The nominal diameter in millimeters. 1.0 = The thread pitch, or distance between threads, in millimeters. 20 = The fastener’s length, in millimeters.

How is a bolt head measured?

For fasteners where the head usually sits above the surface, the measurement is from directly under the head to the end of the fastener. For fasteners that are designed to be countersunk, the measurement is made from the point on the head where the surface of the material is, to the end of the fastener.