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561-6985096-4 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

561-6985096-4: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include diameter: 2.604 INCHES NOMINAL IN, material: STEEL COMP E4340 OVERALL, thickness: 2.625 INCHES NOMINAL IN, overall_length: 8.300 INCHES NOMINAL IN, shear_strength: 140000 DOUBLE POUNDS PER SQUARE INCH, special_features: STYLE SIMILAR TOO; BUT HAS TAPER SECTION INSTEAD OF FLAT SECTION. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-497-1492, 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
561-6985096-4
NSN: 5315-01-497-1492
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter2.604 INCHES NOMINAL IN
materialSTEEL COMP E4340 OVERALL
thickness2.625 INCHES NOMINAL IN
overall_length8.300 INCHES NOMINAL IN
shear_strength140000 DOUBLE POUNDS PER SQUARE INCH
special_featuresSTYLE SIMILAR TOO; BUT HAS TAPER SECTION INSTEAD OF FLAT SECTION
style_designatorSTEPPED
first_flat_length3.400 INCHES NOMINAL IN
end_item_identificationDIVE PLANE ASSEMBLY, LOS ANGELES CLASS SSN (688)
material_document_and_classificationMIL-S-24093 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-497-1492
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 561-6985096-4 · 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
•
FIRST FLAT LENGTH: 3.400 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-24093 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 2.604 INCHES NOMINAL IN
•
SHEAR STRENGTH: 140000 DOUBLE POUNDS PER SQUARE INCH
TECHNICAL CHARACTERISTICS
FIRST FLAT LENGTH3.400 INCHES NOMINAL IN
STYLE DESIGNATORSTEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-24093 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
DIAMETER2.604 INCHES NOMINAL IN
OVERALL LENGTH8.300 INCHES NOMINAL IN
SPECIAL FEATURESSTYLE SIMILAR TOO; BUT HAS TAPER SECTION INSTEAD OF FLAT SECTION
SHEAR STRENGTH140000 DOUBLE POUNDS PER SQUARE INCH
END ITEM IDENTIFICATIONDIVE PLANE ASSEMBLY, LOS ANGELES CLASS SSN (688)
MATERIALSTEEL COMP E4340 OVERALL
THICKNESS2.625 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 1
H513-1304-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 561-6985096-4?
561-6985096-4 is a KEY,MACHINE.
What parts can replace 561-6985096-4?
There is 1 known substitute for 561-6985096-4: H513-1304-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 561-6985096-4?
561-6985096-4 is cataloged in the U.S. Government catalog under NSN 5315-01-497-1492. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.