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PartsTable / COMPONENT / AC3209-1
AC3209-1 ✓ 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,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL, hole_diameter: 1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN, outside_diameter: 1.875 INCHES MINIMUM IN, style_designator: KEY, material_thickness: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, internal_straight_key_width: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM 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 5310-00-222-0715, 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
AC3209-1
NSN: 5310-00-222-0715
FSC: 5310
CAGE: 88049 — SAFETY FOR VISUAL EDUCATION (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
hole_diameter1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
outside_diameter1.875 INCHES MINIMUM IN
style_designatorKEY
material_thickness0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
material_document_and_classificationASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
distance_from_centerline_to_top_of_internal_key0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
NSN5310-00-222-0715
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AC3209-1 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 1.875 INCHES MINIMUM IN
•
MATERIAL THICKNESS: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL STRAIGHT KEY WIDTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 1018 OR STEEL COMP 1020 OR STEEL COMP 1025 OVERALL
STYLE DESIGNATORKEY
OUTSIDE DIAMETER1.875 INCHES MINIMUM IN
MATERIAL THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
HOLE DIAMETER1.440 INCHES MINIMUM AND 1.450 INCHES MAXIMUM IN
INTERNAL KEY QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
45209Interchangeable
interchangeable cross-reference
interchangeable
5209Interchangeable
interchangeable cross-reference
interchangeable
601363Interchangeable
interchangeable cross-reference
interchangeable
A35-4Interchangeable
interchangeable cross-reference
interchangeable
DDB-MInterchangeable
interchangeable cross-reference
interchangeable
2513-MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AC3209-1?
AC3209-1 is a WASHER,KEY.
What parts can replace AC3209-1?
There are 22 known substitutes for AC3209-1: 45209, 5209, 601363 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AC3209-1?
AC3209-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-222-0715. 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