Serving our customers with quality and safety first.
3a
RIGHT-Hand
0.300in. ⁓5/16"
1.690in. and 1.710in. ⁓1-23/32"
flat countersunk
0.625in.
0.375in. first shoulder
1.690in. first shoulder and 1.710in. first shoulder
0.312in. ⁓5/16"
18
60.0 degrees
round first shoulder
undercut 0.220 to 0.230 in. dia by 0.050 to 0.070 in. w between thd and shoulder
copper alloy 464
QQ-B-637 fed spec single material response
unc
1EA
Unc
Copper alloy 464
18
Flat countersunk
0.300 inches minimum
Right-hand
3a
Schedule B number: 7415338550
nmfc 093460
Other copper screws (not for wood) bolts and nuts
FSC 5306 ⁓ Bolts
unc thread series undercut 0.220 to 0.230 in. dia by 0.050 to 0.070 in. w between thd 18 thread quantity per inch flat countersunk head style 0.300" thread length right-hand 3a thread class
Nothing similar to this part number was found in our inventory
An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. it has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. the head is not designed to be held or driven with an inserted drivers. a locking feature may be incorporated in the design of the head or threads. for items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. for items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. excludes thumbscrew.