ST4M138-08-56 — STANDOFF,THREADED,SPACING

✓ Government record, cited

— · ORING SEAL

PRODUCT OVERVIEW

ST4M138-08-56: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 5.50 INCHES MINIMUM AND 5.70 INCHES MAXIMUM IN, thread_class: 2B LEFT INTERNAL (INCLUDES THRU THREAD), thread_length: 0.223 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN, special_features: HELICAL INSERT MS21209C0815, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, thread_direction: RIGHT-HAND RIGHT INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-640-7940, 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

ST4M138-08-56

NSN: 5340-01-640-7940
FSC: 5340 — Hardware, Commercial
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

length	5.50 INCHES MINIMUM AND 5.70 INCHES MAXIMUM IN
thread_class	2B LEFT INTERNAL (INCLUDES THRU THREAD)
thread_length	0.223 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
special_features	HELICAL INSERT MS21209C0815
style_designator	LEFT INTERNAL AND RIGHT INTERNAL THREADS
thread_direction	RIGHT-HAND RIGHT INTERNAL
width_across_flats	0.312 INCHES NOMINAL IN
nominal_thread_size	0.164 INCHES RIGHT INTERNAL IN
cross-sectional_shape	HEXAGON
left_countersink_angle	115.0 DEGREES MINIMUM AND 125.0 DEGREES MAXIMUM
end_item_identification	F-15 ACFT
right_countersink_angle	115.0 DEGREES MINIMUM AND 125.0 DEGREES MAXIMUM
NSN	5340-01-640-7940

COMPONENT DIAGRAM

KEY FEATURES

•

LEFT COUNTERSINK ANGLE: 115.0 DEGREES MINIMUM AND 125.0 DEGREES MAXIMUM

•

WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN

•

LENGTH: 5.50 INCHES MINIMUM AND 5.70 INCHES MAXIMUM IN

•

THREAD LENGTH: 0.223 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN

•

STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS

•

THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)

TECHNICAL CHARACTERISTICS

LEFT COUNTERSINK ANGLE	115.0 DEGREES MINIMUM AND 125.0 DEGREES MAXIMUM
WIDTH ACROSS FLATS	0.312 INCHES NOMINAL IN
LENGTH	5.50 INCHES MINIMUM AND 5.70 INCHES MAXIMUM IN
THREAD LENGTH	0.223 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
THREAD LENGTH	0.223 INCHES NOMINAL RIGHT INTERNAL IN
STYLE DESIGNATOR	LEFT INTERNAL AND RIGHT INTERNAL THREADS
THREAD DIRECTION	RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTION	RIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE	0.164 INCHES RIGHT INTERNAL IN
NOMINAL THREAD SIZE	0.164 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.

5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275

SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is ST4M138-08-56?

ST4M138-08-56 is a STANDOFF,THREADED,SPACING.

What is the NSN for ST4M138-08-56?

ST4M138-08-56 is cataloged in the U.S. Government catalog under NSN 5340-01-640-7940. This indicates validated use in U.S. government and defense supply chains.

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ST4M138-08-56 — STANDOFF,THREADED,SPACING

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