PartsTable
Technical Data Sheet
321493 ✓ 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 BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE BODY, dome_height: 0.281 INCHES MINIMUM IN, thread_length: 0.160 INCHES NOMINAL IN, thread_series: UN, overall_height: 0.547 INCHES NOMINAL IN, sealing_method: MECHANICAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-186-0966, 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
321493
NSN: 5310-00-186-0966
FSC: 5310
CAGE: 1ML14 — BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING (USA)
SPECIFICATIONS
materialRUBBER SILICONE BODY
dome_height0.281 INCHES MINIMUM IN
thread_length0.160 INCHES NOMINAL IN
thread_seriesUN
overall_height0.547 INCHES NOMINAL IN
sealing_methodMECHANICAL
mounting_methodBUSHING
style_designatorCLOSED END
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
base_thread_locationINTERNAL
opening_inside_diameter0.422 INCHES NOMINAL IN
NSN5310-00-186-0966
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 321493 · 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
STYLE DESIGNATOR: KEY
INTERNAL PREBENT KEY WIDTH: 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
HARDNESS RATING: 50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
HOLE DIAMETER: 1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN
OUTSIDE DIAMETER: 1.812 INCHES MINIMUM AND 1.827 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY: 15
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORKEY
INTERNAL PREBENT KEY WIDTH0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONLOGISTGICS SUPPORT VESSEL
HARDNESS RATING50.0 ROCKWELL B MINIMUM AND 81.0 ROCKWELL B MAXIMUM
HOLE DIAMETER1.396 INCHES MINIMUM AND 1.416 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.812 INCHES MINIMUM AND 1.827 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY15
MATERIALSTEEL COMP 1010 OR STEEL COMP 1012 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OVERALL
EXTERNAL PREBENT KEY WIDTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD ALL MATERIAL RESPONSES OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
VE16064Interchangeable
interchangeable cross-reference
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16064Interchangeable
interchangeable cross-reference
interchangeable
989085-1CInterchangeable
interchangeable cross-reference
interchangeable
5310000085904Interchangeable
interchangeable cross-reference
interchangeable
MILW21338Interchangeable
interchangeable cross-reference
interchangeable
MS19069A15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 321493?
321493 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 321493?
There are 32 known substitutes for 321493: VE16064, 16064, 989085-1C and 29 more. Substitute compatibility should be verified for your specific system.
Is 321493 still available?
321493 is currently cancelled.
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