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444SP24 ✓ 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 WASHER is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,2.500 IN. OD,0.188 IN.

THK,TWO 0.469 IN. DIA HOLES DRILLED 180.0 DEG APART @ON A 1.062 IN. DIA BOLT CIRCLE 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 5310-00-350-5557, 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
444SP24
NSN: 5310-00-350-5557
FSC: 5310
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,2.500 IN. OD,0.188 IN. THK,TWO 0.469 IN. DIA HOLES DRILLED 180.0 DEG APART @ON A 1.062 IN. DIA BOLT CIRCLE IN
NSN5310-00-350-5557
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 444SP24 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,2.500 IN. OD,0.188 IN. THK,TWO 0.469 IN. DIA HOLES DRILLED 180.0 DEG APART @ON A 1.062 IN. DIA BOLT CIRCLE IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,2.500 IN. OD,0.188 IN. THK,TWO 0.469 IN. DIA HOLES DRILLED 180.0 DEG APART @ON A 1.062 IN. DIA BOLT CIRCLE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
73073Interchangeable
interchangeable cross-reference
interchangeable
H-B-771Interchangeable
interchangeable cross-reference
interchangeable
85-1010A-02L-300Interchangeable
interchangeable cross-reference
interchangeable
8 1-2-1010-0-300LCInterchangeable
interchangeable cross-reference
interchangeable
KY-879/PInterchangeable
interchangeable cross-reference
interchangeable
322205Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 444SP24?
444SP24 is a WASHER.
What parts can replace 444SP24?
There are 13 known substitutes for 444SP24: 73073, H-B-771, 85-1010A-02L-300 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 444SP24?
444SP24 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-5557. 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