PartsTable
Technical Data Sheet
40490-9 ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The PLATE,MOUNTING,COOLER,COIL is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEAT, body_style: STRAIGHT THRU, overall_length: 11.8125 INCHES MINIMUM AND 12.0625 INCHES MAXIMUM IN, special_features: PSI 25-60, valve_stem_design: SINGLE SEAT, flow_control_device: DISK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-543-4700, 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
40490-9
NSN: 5310-00-543-4700
FSC: 5310
CAGE: 77294 — PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC DIV PIPER INDUSTRIAL MANUFACTURING COMPANY (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEAT
body_styleSTRAIGHT THRU
port_quantity2
overall_length11.8125 INCHES MINIMUM AND 12.0625 INCHES MAXIMUM IN
special_featuresPSI 25-60
valve_stem_designSINGLE SEAT
flow_control_deviceDISK
valve_loading_methodSPRING
end_connection_quantity2
end_item_identification4820013402286
valve_size_for_which_designed1.50 INCHES IN
valve_type_for_which_designedPRESSURE REDUCING
NSN5310-00-543-4700
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 40490-9 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
MATERIAL: STEEL OVERALL
THREAD QUANTITY PER INCH: 32
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
THREAD CLASS: 2B
THREAD DIRECTION: RIGHT-HAND
NOMINAL THREAD SIZE: 0.138 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH32
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT HEIGHT0.172 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
404909Interchangeable
interchangeable cross-reference
interchangeable
40490-9 PART 40490-903Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-24384Interchangeable
interchangeable cross-reference
interchangeable
40490-903Interchangeable
interchangeable cross-reference
interchangeable
40490-9 ASSY 40490-902Interchangeable
interchangeable cross-reference
interchangeable
40490-902Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40490-9?
40490-9 is a PLATE,MOUNTING,COOLER,COIL.
What parts can replace 40490-9?
There are 10 known substitutes for 40490-9: 404909, 40490-9 PART 40490-903, MIL-V-24384 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40490-9?
40490-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-543-4700. This indicates validated use in U.S. government and defense supply chains.
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