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PartsTable / COMPONENT / 12607221-009
12607221-009 ✓ 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 OVERALL, thickness: 1.8 MILLIMETERS MINIMUM AND 2.2 MILLIMETERS MAXIMUM MM, hole_diameter: 8.40 MILLIMETERS MINIMUM AND 8.62 MILLIMETERS MAXIMUM MM, overall_diameter: 23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM, 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 5310-01-670-6987, 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
12607221-009
NSN: 5310-01-670-6987
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness1.8 MILLIMETERS MINIMUM AND 2.2 MILLIMETERS MAXIMUM MM
hole_diameter8.40 MILLIMETERS MINIMUM AND 8.62 MILLIMETERS MAXIMUM MM
overall_diameter23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2320-01-652-5208; MRAP - COUGAR
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-670-6987
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12607221-009 · 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 OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 8.40 MILLIMETERS MINIMUM AND 8.62 MILLIMETERS MAXIMUM MM
•
THICKNESS: 1.8 MILLIMETERS MINIMUM AND 2.2 MILLIMETERS MAXIMUM MM
•
OVERALL DIAMETER: 23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER8.40 MILLIMETERS MINIMUM AND 8.62 MILLIMETERS MAXIMUM MM
END ITEM IDENTIFICATION2320-01-652-5208; MRAP - COUGAR
THICKNESS1.8 MILLIMETERS MINIMUM AND 2.2 MILLIMETERS MAXIMUM MM
OVERALL DIAMETER23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM MM
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
UDB-940300Interchangeable
interchangeable cross-reference
interchangeable
38404Interchangeable
interchangeable cross-reference
interchangeable
38323Interchangeable
interchangeable cross-reference
interchangeable
21086CInterchangeable
interchangeable cross-reference
interchangeable
19263BInterchangeable
interchangeable cross-reference
interchangeable
SB155GPNInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12607221-009?
12607221-009 is a WASHER,FLAT.
What parts can replace 12607221-009?
There are 7 known substitutes for 12607221-009: UDB-940300, 38404, 38323 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12607221-009?
12607221-009 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-670-6987. 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