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PartsTable / COMPONENT / 721009
721009 ✓ 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 RING,ROD,PISTON is a the manufacturer industrial component. Key specifications include material: GLASS AND PLASTIC OVERALL, ring_style: CONCENTRICCONCENTRIC, joint_style: DIAGONAL JOINTDIAGONAL JOINT, overall_width: 0.9950 INCHES MINIMUM AND 0.9950 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM1.0050 INCHES MAXIMUM IN, radial_wall_thickness: 0.1220 INCHES MINIMUM AND 0.1220 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM0.1260 INCHES MAXIMUM IN, standard_bore_diameter: 2.504 INCHES2.504 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-672-8865, 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
721009
NSN: 5310-00-672-8865
FSC: 5310
CAGE: 94861 — MALABAR (USA)
SPECIFICATIONS
materialGLASS AND PLASTIC OVERALL
ring_styleCONCENTRICCONCENTRIC
joint_styleDIAGONAL JOINTDIAGONAL JOINT
overall_width0.9950 INCHES MINIMUM AND 0.9950 INCHES MINIMUM AND 1.0050 INCHES MAXIMUM1.0050 INCHES MAXIMUM IN
radial_wall_thickness0.1220 INCHES MINIMUM AND 0.1220 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM0.1260 INCHES MAXIMUM IN
standard_bore_diameter2.504 INCHES2.504 INCHES IN
end_item_identification3930-01-305-2111;FORK-LIFT TRUCK3930-01-305-2111;FORK-LIFT TRUCK
cross-sectional_shape_stylePLAIN RECTANGULAR, STRAIGHT FACEPLAIN RECTANGULAR, STRAIGHT FACE
NSN5310-00-672-8865
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 721009 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
P40436Interchangeable
interchangeable cross-reference
interchangeable
721009Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 721009?
721009 is a RING,ROD,PISTON.
What parts can replace 721009?
There are 2 known substitutes for 721009: P40436, 721009. Substitute compatibility should be verified for your specific system.
What is the NSN for 721009?
721009 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-672-8865. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026