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Technical Data Sheet
PartsTable / COMPONENT / 5609-21
5609-21 ✓ 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 SCREW,ADJUSTING is a the manufacturer industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL, temp_rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF, hole_diameter: 0.194 INCHES NOMINAL IN, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL, shoulder_height: 0.032 INCHES NOMINAL IN, outside_diameter: 0.379 INCHES NOMINAL 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 5310-00-103-3032, 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
5609-21
NSN: 5310-00-103-3032
FSC: 5310
CAGE: 86928 — SEASTROM MANUFACTURING CO INC (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OVERALL
temp_rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
hole_diameter0.194 INCHES NOMINAL IN
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 71.0 SHORE DUROMETER A MAXIMUM OVERALL
shoulder_height0.032 INCHES NOMINAL IN
outside_diameter0.379 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.251 INCHES NOMINAL IN
material_thickness0.035 INCHES NOMINAL IN
peripheral_diameter4.226 INCHES MINIMUM AND 4.298 INCHES MAXIMUM IN
center_hole_diameter3.969 INCHES MINIMUM AND 3.999 INCHES MAXIMUM IN
elongation_percentage164 MAXIMUM
NSN5310-00-103-3032
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5609-21 · 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 THICKNESS: 0.035 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
HOLE DIAMETER: 0.194 INCHES NOMINAL IN
•
SHOULDER HEIGHT: 0.032 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.379 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.251 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 3650 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.035 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
HOLE DIAMETER0.194 INCHES NOMINAL IN
SHOULDER HEIGHT0.032 INCHES NOMINAL IN
OUTSIDE DIAMETER0.379 INCHES NOMINAL IN
SHOULDER DIAMETER0.251 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 3650 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
N0304 2-242Interchangeable
interchangeable cross-reference
interchangeable
08849ABInterchangeable
interchangeable cross-reference
interchangeable
207436Interchangeable
interchangeable cross-reference
interchangeable
560921Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5609-21?
5609-21 is a SCREW,ADJUSTING.
What parts can replace 5609-21?
There are 4 known substitutes for 5609-21: N0304 2-242, 08849AB, 207436 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5609-21?
5609-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-103-3032. 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