The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 3.790 INCHES MINIMUM AND 3.810 INCHES MAXIMUM IN, material: STEEL INSERT, thread_class: 2B RIGHT INTERNAL, thread_length: 0.500 INCHES NOMINAL RIGHT INTERNAL IN, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD). This part is cataloged in the U.S.
Government catalog under NSN 5340-01-723-3942, 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
ST4M138-04-38
NSN:5340-01-723-3942 FSC:5340 — Hardware, Commercial CAGE:76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
length
3.790 INCHES MINIMUM AND 3.810 INCHES MAXIMUM IN
material
STEEL INSERT
thread_class
2B RIGHT INTERNAL
thread_length
0.500 INCHES NOMINAL RIGHT INTERNAL IN
style_designator
LEFT INTERNAL AND RIGHT INTERNAL THREADS
thread_direction
RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
width_across_flats
0.250 INCHES NOMINAL IN
nominal_thread_size
0.112 INCHES RIGHT INTERNAL IN
cross-sectional_shape
HEXAGON
end_item_identification
F-15EX
thread_quantity_per_inch
40 LEFT INTERNAL (INCLUDES THRU THREAD)
thread_series_designator
UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
NSN
5340-01-723-3942
COMPONENT DIAGRAM
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
LENGTH: 3.790 INCHES MINIMUM AND 3.810 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS-QQ-A-225/6 OR AMS-QQ-A-200/3 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE STANDOFF
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS
0.250 INCHES NOMINAL IN
LENGTH
3.790 INCHES MINIMUM AND 3.810 INCHES MAXIMUM IN
THREAD LENGTH
0.500 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
THREAD LENGTH
0.500 INCHES NOMINAL RIGHT INTERNAL IN
STYLE DESIGNATOR
LEFT INTERNAL AND RIGHT INTERNAL THREADS
MATERIAL DOCUMENT AND CLASSIFICATION
AMS-QQ-A-225/6 OR AMS-QQ-A-200/3 AEROSPACE MATERIAL SPEC STD SINGLE MATERIAL RESPONSE STANDOFF
MATERIAL DOCUMENT AND CLASSIFICATION
AS7245 ASSN STD SINGLE MATERIAL RESPONSE INSERT
THREAD DIRECTION
RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTION
RIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE
0.112 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is ST4M138-04-38?
ST4M138-04-38 is a STANDOFF,THREADED,SPACING.
What parts can replace ST4M138-04-38?
There is 1 known substitute for ST4M138-04-38: ST4M138. Substitute compatibility should be verified for your specific system.
What is the NSN for ST4M138-04-38?
ST4M138-04-38 is cataloged in the U.S. Government catalog under NSN 5340-01-723-3942. This indicates validated use in U.S. government and defense supply chains.
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