PartsTable
Technical Data Sheet
99278-720-2 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thickness: 0.030 INCHES NOMINAL IN, hole_diameter: 0.765 INCHES NOMINAL IN, overall_diameter: 1.320 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-569-6042, 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
99278-720-2
NSN: 5310-01-569-6042
FSC: 5310
CAGE: 56529 — HYDRAULICS INTERNATIONAL, INC. DBA HYDRAULICS INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thickness0.030 INCHES NOMINAL IN
hole_diameter0.765 INCHES NOMINAL IN
overall_diameter1.320 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationF-15 SUPPORT EQUIPMENT
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-569-6042
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 99278-720-2 · 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
MATERIAL: STEEL COMP 304 OVERALL
OVERALL DIAMETER: 1.320 INCHES NOMINAL IN
HOLE DIAMETER: 0.765 INCHES NOMINAL IN
THICKNESS: 0.030 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLE: ROUND
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 304 OVERALL
OVERALL DIAMETER1.320 INCHES NOMINAL IN
HOLE DIAMETER0.765 INCHES NOMINAL IN
THICKNESS0.030 INCHES NOMINAL IN
END ITEM IDENTIFICATIONF-15 SUPPORT EQUIPMENT
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
R22Interchangeable
interchangeable cross-reference
interchangeable
2310-22Interchangeable
interchangeable cross-reference
interchangeable
57-0700-22Interchangeable
interchangeable cross-reference
interchangeable
010L7-6-8Interchangeable
interchangeable cross-reference
interchangeable
8764911Interchangeable
interchangeable cross-reference
interchangeable
7253-86307Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 99278-720-2?
99278-720-2 is a WASHER,FLAT.
What parts can replace 99278-720-2?
There are 6 known substitutes for 99278-720-2: R22, 2310-22, 57-0700-22 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 99278-720-2?
99278-720-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-569-6042. This indicates validated use in U.S. government and defense supply chains.
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