Size 3/16 x 3/8 and item has pan head with washer
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
NSN 6150-00-150-8838
NSN 5835-00-564-0057
NSN 6105-00-265-7545
NSN 6105-01-121-8048
NSN 6650-01-367-5172
NSN 6610-01-533-1115
NSN 5915-01-014-4837
NSN 5975-01-003-8937
NSN 5915-01-142-5755
NSN 6145-00-291-5388
NSN 5965-01-013-0290
NSN 6620-00-875-6572