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91780A357 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91780A357: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.750 INCHES NOMINAL IN, material: ALUMINUM OVERALL, thread_class: 2B RIGHT INTERNAL, thread_length: 0.750 INCHES NOMINAL RIGHT INTERNAL IN, special_features: ITEM IS ROCKWELL HARDENED TO B60; TENSILE STRENGTH AT 55 KPI, style_designator: INTERNALLY THREADED FULL LENGTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-585-9553, 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
91780A357
NSN: 5340-01-585-9553
FSC: 5340 — Hardware, Commercial
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
length0.750 INCHES NOMINAL IN
materialALUMINUM OVERALL
thread_class2B RIGHT INTERNAL
thread_length0.750 INCHES NOMINAL RIGHT INTERNAL IN
special_featuresITEM IS ROCKWELL HARDENED TO B60; TENSILE STRENGTH AT 55 KPI
style_designatorINTERNALLY THREADED FULL LENGTH
thread_directionRIGHT-HAND RIGHT INTERNAL
width_across_flats0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES RIGHT INTERNAL IN
cross-sectional_shapeHEXAGON
end_item_identificationNAVY CODE 000A7827
thread_quantity_per_inch20 RIGHT INTERNAL
NSN5340-01-585-9553
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91780A357 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
•
LENGTH: 0.750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES NOMINAL RIGHT INTERNAL IN
•
STYLE DESIGNATOR: INTERNALLY THREADED FULL LENGTH
•
THREAD DIRECTION: RIGHT-HAND RIGHT INTERNAL
•
NOMINAL THREAD SIZE: 0.250 INCHES RIGHT INTERNAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
LENGTH0.750 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES NOMINAL RIGHT INTERNAL IN
STYLE DESIGNATORINTERNALLY THREADED FULL LENGTH
THREAD DIRECTIONRIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE0.250 INCHES RIGHT INTERNAL IN
CROSS-SECTIONAL SHAPEHEXAGON
SPECIAL FEATURESITEM IS ROCKWELL HARDENED TO B60; TENSILE STRENGTH AT 55 KPI
THREAD CLASS2B RIGHT INTERNAL
END ITEM IDENTIFICATIONNAVY CODE 000A7827
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 1
113210 REV B ITEM 38Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 91780A357?
91780A357 is a STANDOFF,THREADED,SPACING.
What parts can replace 91780A357?
There is 1 known substitute for 91780A357: 113210 REV B ITEM 38. Substitute compatibility should be verified for your specific system.
What is the NSN for 91780A357?
91780A357 is cataloged in the U.S. Government catalog under NSN 5340-01-585-9553. This indicates validated use in U.S. government and defense supply chains.
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