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3a
RIGHT-Hand
0.374in. and 0.453in. ⁓29/64"
1.015in. and 1.062in. ⁓1-1/16"
hexagon
0.140in. and 0.172in. ⁓11/64"
0.428in. and 0.440in.
0.046in. ⁓3/64"
0.2487in. and 0.2492in.
spec item
0.250in. ⁓1/4"
0.609in. and 0.641in.
1
drilled
28
62000 pounds per square inch
hexagon flats
anodize or oxide film
MIL-A-8625 mil spec 1st treatment response or MIL-C-5541 mil spec 2nd treatment response
unf
Unf
28
0.609 inches minimum and 0.641 inches maximum
0.046 inches
Hexagon
0.374 inches minimum and 0.453 inches maximum
Right-hand
3a
FSC 5306 ⁓ Bolts
Used on spec item. unf thread series anodize or oxide film surface treated 28 thread quantity per inch 0.609" grip length 0.046" hole diameter hexagon head style 0.374" thread length right-hand 3a thread class
Nothing similar to this part number was found in our inventory
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. for items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. for items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.