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Hexagon Head Cap Screw

Model / MPN: W1013 | NSN: 5305-00-012-2145
ITAR Registered seal

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt, machine; bolt, externally relieved body; bolt, internal wrenching; and screw, cap, socket head.

Product Details
NATO Stock Number
Sold in multiples of
Thread Class
Thread Direction
Thread Length
1.000 inches
Fastener Length
1.250 inches
Head Style
Head Height
0.281 inches
Width Between Flats
0.562 inches
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
Min. Tensile Strength (psi)
69000 pounds per square inch
Hardness Rating
100.0 rockwell b
Surface Treatment
Thread Series Designator
Nondefinitive Specification/std Data
2 type and 10p style and 2 grade
W1013 Series Parts

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W1013 Cross Reference
  • 1000-808