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NAS1974C4T

Screw, Close Tolerance

Part number
NAS1974C4T
NSN
5305-01-516-5399
NIIN
015165399
Item name
Screw, Close Tolerance
Manufacturer
National Aerospace Standards
CAGE code
80205
FSC
5305 — Screws
Unit of issue
EA
DEMIL code
A

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Technical characteristics

Thread Class
3A
Thread Direction
Right-hand
Thread Length
0.410 in min / 0.440 in max
Fastener Length
0.660 in min / 0.690 in max
Head Style
Flat countersunk
Head Diameter
0.449 in nominal
Grip Diameter
0.2485 in min / 0.2495 in max
Internal Drive Style
Offset cruciform (torque set)
Nominal Thread Diameter
0.250 in
Grip Length
0.240 in min / 0.260 in max
Thread Quantity per Inch
28
Countersink Angle
99.0° min / 101.0° max
Thread Series
UNJF
Material
Iron alloy 660 overall
Surface Treatment
Passivate overall
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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