Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.316in. ⁓21/64"
0.926in. and 0.956in. ⁓31/32"
flat countersunk
0.449in. and 0.507in.
0.2485in. and 0.2495in.
0.076in. first hole
cross recess type 1
0.250in. ⁓1/4"
0.625in.
28
160000 pounds per square inch
36.0 rockwell c and 40.0 rockwell c
99.0 degrees and 101.0 degrees
0.825in. first hole
steel comp 4140 or steel comp E4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
MIL-S-5626 mil spec 1st material response or MIL-S-5000 mil spec 2nd material response or MIL-S-8503 mil spec 3rd material response or MIL-S-6098 mil spec 4th material response or MIL-S-6049 mil spec 5th material response
cadmium and chromate
QQ-P-416, type 2, class 3 fed spec single treatment response
unf
80205-NAS1204 professional/industrial association standard
Unf
Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
28
0.625 inches
Flat countersunk
0.316 inches minimum
Right-hand
3a
Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
unf thread series cadmium surface treated 28 thread quantity per inch 0.625" grip length flat countersunk head style 0.316" thread length right-hand 3a thread class
Nothing similar to this part number was found in our inventory
A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.