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NAS1123-3

Screw, Close Tolerance

Part number
NAS1123-3
NSN
5305-01-275-1388
NIIN
01-275-1388
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
0.251 inches minimum and 0.301 inches maximum
Fastener Length
2.261 inches minimum and 2.291 inches maximum
Head Style
Pan no. 2
Head Diameter
0.306 inches minimum and 0.313 inches maximum
Head Height
0.103 inches minimum and 0.118 inches maximum
Grip Diameter
0.1885 inches minimum and 0.1895 inches maximum
Internal Drive Style
Offset cruciform (torque set)
Nominal Thread Diameter
0.190 inches
Grip Length
1.990 inches minimum and 2.010 inches maximum
Thread Quantity per Inch
32
Minimum Tensile Strength
160000 pounds per square inch
Hardness Rating
36.0 rockwell C minimum overall and 40.0 rockwell C maximum overall
Surface Finish
32.0 microinches bearing surface of head
Surface Finish
32.0 microinches grip
Surface Finish
32.0 microinches threads
Material
Steel comp 4140 overall or steel comp E4340 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
Cadmium overall and chromate overall
Surface Treatment Document and Classification
QQ-P-416 ty 2 cl 2 fed spec single treatment response overall
Thread Series Designator
UNJF
Specification/Standard Data
80205-NAS1123 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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