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NAS1578A3T25

Screw, Close Tolerance

Part number
NAS1578A3T25
NSN
5305-01-365-4869
NIIN
01-365-4869
Item name
Screw, Close Tolerance
Manufacturer
National Aerospace Standards
CAGE code
80205
FSC
5305
Unit of issue
EA
DEMIL code
A

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Alternate part numbers

Technical characteristics

Thread Class
3A
Thread Direction
Right-hand
Thread Length
0.363 inches nominal
Fastener Length
1.910 inches minimum and 1.940 inches maximum
Head Style
Pan no. 2
Head Diameter
0.360 inches minimum and 0.375 inches maximum
Head Height
0.115 inches minimum and 0.125 inches maximum
Grip Diameter
0.1890 inches minimum and 0.1895 inches maximum
Internal Drive Style
Offset cruciform (torque set)
Nominal Thread Diameter
0.190 inches
Grip Length
1.552 inches minimum and 1.572 inches maximum
Thread Quantity per Inch
32
Minimum Tensile Strength
160000 pounds per square inch
Material
Steel comp 4140 overall or steel comp 4340 overall or steel comp 8740 overall
Material Document and Classification
MIL-S-5626 mil spec 1ST material response overall or MIL-S-5000 mil spec 2ND material response overall or MIL-S-6049 mil spec 3RD material response overall
Surface Treatment
Passivate overall or chromate overall and chromate overall
Surface Treatment Document and Classification
QQ-P-35 fed spec 1ST treatment response overall or QQ-P-416, cl 2, ty 2 fed spec 2ND treatment response overall
Thread Series Designator
UNJF
Specification/Standard Data
80205-NAS1578 professional/industrial association standard
Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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