MS16997-85

Screw, cap, Socket Head

Part number

MS16997-85

NSN

5305-01-627-8141

NIIN

01-627-8141

Item name

Screw, cap, Socket Head

Manufacturer

Military Standards

CAGE code

96906

FSC

5305

Unit of issue

EA

DEMIL code

A

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Alternate part numbers

• MS16997-85L CAGE 96906

Technical characteristics

Thread Class

3A

Thread Direction

Right-hand

Thread Length

1.094 inches minimum and 1.156 inches maximum

Fastener Length

2.219 inches minimum and 2.281 inches maximum

Head Style

Flat chamfer

Head Diameter

0.457 inches minimum and 0.468 inches maximum

Head Height

0.306 inches minimum and 0.312 inches maximum

Locking Feature

Patch threads

Internal Drive Style

Hexagon

Nominal Thread Diameter

0.312 inches

Width Across Flats

0.250 inches minimum and 0.253 inches maximum

Thread Quantity per Inch

18

Minimum Tensile Strength

160000 pounds per square inch

Material

Steel overall

Surface Treatment

Cadmium and chromate overall

Thread Series Designator

UNC

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