Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.554in. and 0.625in. ⁓5/8"
0.688in. ⁓45/64"
double hexagon w/hole
0.330in. ⁓11/32"
0.304in. and 0.313in.
0.438in.
0.060in. and 0.070in.
0.070in. ⁓5/64"
C-5 aircraft
0.250in. ⁓1/4"
4
drilled
finished head
28
130000 pounds per square inch
248.0 brinell standard and 341.0 brinell standard
85000 pounds per square inch
hexagon flats
32.0 microinches threads
63.0 microinches bearing surface of head
63.0 microinches grip
bolt, MACHINE-Steel, drilled double hexagon, extended washer, .250-28 (MIL-S-8879 thread)
iron alloy 660
ams 5735 assn std single material response
unjf
Unjf
Iron alloy 660
28
0.070 inches
Double hexagon w/hole
0.554 inches minimum and 0.625 inches maximum
Right-hand
3a
Schedule B number: 7318152000
nmfc 093486
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5306 ⁓ Bolts
Used on c-5 aircraft. unjf thread series bolt, machine-steel, drilled double hexagon, extended washer, .250-28 (mil-s-8879 thread) 28 thread quantity per inch 0.070" hole diameter double hexagon w/hole head style 0.554" thread length right-hand 3a thread class
Nothing similar to this part number was found in our inventory
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. see also screw, cap, hexagon head and screw, machine.