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Technical Data Sheet
PartsTable / COMPONENT / 4759121
4759121 ✓ 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

UMBILICAL ASSEMBLY,DIVERS 400 FT. Key specifications include general_characteristics_item_description: 400 FT.;I.A.W. MIL-SPEC.

MK-12-SSDS FT. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-928-9379, 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
4759121
NSN: 5310-00-928-9379
FSC: 5310
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
general_characteristics_item_description400 FT.;I.A.W. MIL-SPEC. MK-12-SSDS FT
NSN5310-00-928-9379
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4759121 · 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
•
HOLE DIAMETER: 0.064 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
•
HEAT TREATMENT: AS FABRICATED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-766,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 304 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.188 INCHES NOMINAL IN
•
THICKNESS: 0.019 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.064 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN
HEAT TREATMENTAS FABRICATED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-766,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 304 OVERALL
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.188 INCHES NOMINAL IN
THICKNESS0.019 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
592-4759104Interchangeable
Umbilical Assembly,divers 400 Ft
interchangeable
4759150Interchangeable
Umbilical Assembly,divers 400 Ft
interchangeable
4759165Interchangeable
Umbilical Assembly,divers 400 Ft
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4759121?
4759121 is a UMBILICAL ASSEMBLY,DIVERS 400 FT.
What parts can replace 4759121?
There are 3 known substitutes for 4759121: 592-4759104, 4759150, 4759165. Substitute compatibility should be verified for your specific system.
What is the NSN for 4759121?
4759121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-928-9379. 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