Socket Head Cap Screw

Model / MPN: A51K56639-11 | NSN: 5305-00-005-0050

An externally threaded fastener whose threaded portion is of one diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Product Details

NATO Stock Number

5305-00-005-0050

Sold in multiples of

1 EA

DEMIL

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

Between 0.984 inches and 1.016 inches

Head Style

Flat chamfer

Head Diameter

Between 0.262 inches and 0.270 inches

Head Height

Between 0.159 inches and 0.164 inches

Shank Unthreaded Hole Diameter

0.038 inches first hole and 0.043 inches first hole

Internal Drive Style

Hexagon

Thread Diameter

0.164 inches

Width Across Flats

Between 0.140 inches and 0.142 inches

Thready Qty Per Inch (tpi)

Hardness Rating

80.0 rockwell b

Minimum Yield Strength

80000 pounds per square inch

Distance From Head Largest Bearing Surface To Shank Hole Center

0.940 inches first hole

Material

Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316

Material Specification

66 federal standard all material responses

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unc

A51K56639 Series Parts

A51K56639-11

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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ISO 9001:2015 + AS9120B
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A51K56639-11 Cross Reference

A51K56639-11
A51K56639-11