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3a
RIGHT-Hand
0.309in. and 0.315in. ⁓21/64"
0.313in. ⁓21/64"
fillister
0.462in. and 0.468in.
0.267in. ⁓9/32"
slot
0.250in. ⁓1/4"
28
navy special project
copper alloy
MIL-C-895, 1/2 h mil spec single material response
bearing surface of head chamfered 41 deg by 0.124 in. porm 0.003 lg
unf
Unf
28
Fillister
0.309 inches minimum and 0.315 inches maximum
Right-hand
3a
Schedule B number: 7415338550
nmfc 096630
Other copper screws (not for wood) bolts and nuts
FSC 5305 ⁓ Screws
unf thread series bearing surface of head chamfered 41 deg by 0.124 in. porm 0.003 lg navy special project 28 thread quantity per inch fillister head style 0.309" 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 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.