NATO Stock Number
5305-01-155-6112
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.490 inches and 0.620 inches
Fastener Length
Between 0.590 inches and 0.620 inches
Head Style
Flat chamfer
Head Diameter
Between 0.198 inches and 0.205 inches
Head Height
Between 0.121 inches and 0.125 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
0.094 inches
Thready Qty Per Inch (tpi)
20
Criticality Code Justification
Zzzy
Material
Steel comp 302 or steel comp 302b or steel comp 303 or steel comp 303 plus x or steel comp 303se or steel comp 303cu or steel comp 303ma or steel comp 303pb or steel comp 304 or steel comp 304l
Special Test Features
Special quality control testing
Test Data Document
81349-mil-p-23199 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unc
Reference Number Differentiating Characteristics
As differentiated by material which must conform to ships parts control center special quality control provisions and certified free from mercury contamination