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2-3159-04 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2-3159-04: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, overall_width: 0.188 INCHES NOMINAL IN, overall_height: 0.671 INCHES NOMINAL IN, overall_length: 0.495 INCHES NOMINAL IN, shear_strength: 180000 SINGLE POUNDS PER SQUARE INCH, style_designator: OCTAGON SHAPE. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-992-8001, 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
2-3159-04
NSN: 5315-00-992-8001
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 04823 — TACTAIR FLUID CONTROLS INC WESTERN HYDRAULICS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
overall_width0.188 INCHES NOMINAL IN
overall_height0.671 INCHES NOMINAL IN
overall_length0.495 INCHES NOMINAL IN
shear_strength180000 SINGLE POUNDS PER SQUARE INCH
style_designatorOCTAGON SHAPE
features_providedCASEHARDENED
surface_treatmentCHROMIUM OVERALL
starting_edge_shapeROUND
starting_edge_radius0.094 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-C-320,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5315-00-992-8001
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2-3159-04 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-C-320,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: OCTAGON SHAPE
•
FEATURES PROVIDED: CASEHARDENED
•
STARTING EDGE RADIUS: 0.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.671 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STARTING EDGE SHAPEROUND
STYLE DESIGNATOROCTAGON SHAPE
OVERALL LENGTH0.495 INCHES NOMINAL IN
OVERALL WIDTH0.188 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
STARTING EDGE RADIUS0.094 INCHES NOMINAL IN
SURFACE TREATMENTCHROMIUM OVERALL
SHEAR STRENGTH180000 SINGLE POUNDS PER SQUARE INCH
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2-3159-04?
2-3159-04 is a KEY,MACHINE.
What is the NSN for 2-3159-04?
2-3159-04 is cataloged in the U.S. Government catalog under NSN 5315-00-992-8001. 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.