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PartsTable / COMPONENT / W0721-00-044
W0721-00-044 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 40.0 MILLIMETERS NOMINAL MM, overall_height: 22.0 MILLIMETERS NOMINAL MM, overall_length: 220.0 MILLIMETERS NOMINAL MM, style_designator: PLAIN, material_document_and_classification: ST 50-1K , DIN 1652 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-421-2056, 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
W0721-00-044
NSN: 5315-01-421-2056
FSC: 5315
CAGE: N1428 — KONGSBERG MARITIME CM AS (NOR)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width40.0 MILLIMETERS NOMINAL MM
overall_height22.0 MILLIMETERS NOMINAL MM
overall_length220.0 MILLIMETERS NOMINAL MM
style_designatorPLAIN
material_document_and_classificationST 50-1K , DIN 1652 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-421-2056
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: W0721-00-044 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ST 50-1K , DIN 1652 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT22.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONST 50-1K , DIN 1652 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORPLAIN
OVERALL WIDTH40.0 MILLIMETERS NOMINAL MM
OVERALL LENGTH220.0 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
168-10Interchangeable
interchangeable cross-reference
interchangeable
A-A-1295Interchangeable
interchangeable cross-reference
interchangeable
TR12Interchangeable
interchangeable cross-reference
interchangeable
802710Interchangeable
interchangeable cross-reference
interchangeable
80-271DInterchangeable
interchangeable cross-reference
interchangeable
3AN1180941Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is W0721-00-044?
W0721-00-044 is a KEY,MACHINE.
What parts can replace W0721-00-044?
There are 6 known substitutes for W0721-00-044: 168-10, A-A-1295, TR12 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for W0721-00-044?
W0721-00-044 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-421-2056. 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