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Technical Data Sheet
90308A406 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 0.750 INCHES NOMINAL IN, thread_class: 2B FLANGE HOLE, thread_length: 0.750 INCHES NOMINAL FLANGE HOLE IN, special_features: SPECIFICATIONS MET: ASTM B16;TENSILE STRENGTH: 45000 PSI;HARDNESS: ROCKEWLL B55;MATERIAL: ZINC PLATED BRASS, style_designator: INTERNALLY THREADED FULL LENGTH, thread_direction: RIGHT-HAND FLANGE HOLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-648-9687, 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
90308A406
NSN: 5340-01-648-9687
FSC: 5340
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
length0.750 INCHES NOMINAL IN
thread_class2B FLANGE HOLE
thread_length0.750 INCHES NOMINAL FLANGE HOLE IN
special_featuresSPECIFICATIONS MET: ASTM B16;TENSILE STRENGTH: 45000 PSI;HARDNESS: ROCKEWLL B55;MATERIAL: ZINC PLATED BRASS
style_designatorINTERNALLY THREADED FULL LENGTH
thread_directionRIGHT-HAND FLANGE HOLE
surface_treatmentZINC OVERALL
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES FLANGE HOLE IN
flange_hole_quantity1
cross-sectional_shapeHEXAGON
end_item_identification6115-01-591-1161;GENERATOR,HEATING AND AIR CONDITIONER
NSN5340-01-648-9687
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 90308A406 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
NOMINAL THREAD SIZE: 0.250 INCHES FLANGE HOLE IN
LENGTH: 0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE: HEXAGON
FLANGE HOLE QUANTITY: 1
THREAD QUANTITY PER INCH: 20 FLANGE HOLE
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES FLANGE HOLE IN
LENGTH0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGON
SPECIAL FEATURESSPECIFICATIONS MET: ASTM B16;TENSILE STRENGTH: 45000 PSI;HARDNESS: ROCKEWLL B55;MATERIAL: ZINC PLATED BRASS
END ITEM IDENTIFICATION6115-01-591-1161;GENERATOR,HEATING AND AIR CONDITIONER
FLANGE HOLE QUANTITY1
THREAD QUANTITY PER INCH20 FLANGE HOLE
THREAD CLASS2B FLANGE HOLE
THREAD DIRECTIONRIGHT-HAND FLANGE HOLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
62110Upgraded Successor
successor cross-reference
successor
121084Upgraded Successor
successor cross-reference
successor
62110-1EUpgraded Successor
successor cross-reference
successor
F20A250V110AInterchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-15160/20Interchangeable
interchangeable cross-reference
interchangeable
811E501Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 90308A406?
90308A406 is a STANDOFF,THREADED,SPACING.
What parts can replace 90308A406?
There are 11 known substitutes for 90308A406: 62110, 121084, 62110-1E and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 90308A406?
90308A406 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-648-9687. This indicates validated use in U.S. government and defense supply chains.
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