The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEADLESS (SETSCREW), point_style: FLAT, thread_class: 3A A, thread_length: 0.875 INCHES MINIMUM IN, fastener_length: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.
Government catalog under NSN 5340-00-319-4263, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
643731
NSN:5340-00-319-4263 NIINs:003194263, 009048890 FSC:5340 — Hardware, Commercial CAGE:56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
material
STEEL OVERALL
head_style
HEADLESS (SETSCREW)
point_style
FLAT
thread_class
3A A
thread_length
0.875 INCHES MINIMUM IN
fastener_length
0.875 INCHES NOMINAL IN
hardness_rating
45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
thread_direction
RIGHT-HAND
width_across_flats
0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
internal_drive_style
HEXAGON
nominal_thread_diameter
0.164 INCHES IN
thread_quantity_per_inch
36
NSN
5340-00-319-4263
COMPONENT DIAGRAM
SUBSTITUTES & CROSS-REFERENCES
No substitute or cross-reference records for this part.
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 643731?
643731 is a SETSCREW.
What is the NSN for 643731?
643731 is cataloged in the U.S. Government catalog under NSN 5340-00-319-4263. This indicates validated use in U.S. government and defense supply chains.
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