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142384 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

142384: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, flat_height: 0.073 INCHES NOMINAL IN, overall_width: 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN, overall_height: 0.312 INCHES NOMINAL IN, overall_length: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN, style_designator: STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-139-2733, 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
142384
NSN: 5315-01-139-2733
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
flat_height0.073 INCHES NOMINAL IN
overall_width0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
overall_height0.312 INCHES NOMINAL IN
overall_length1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
style_designatorSTEPPED
first_flat_length0.528 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
second_flat_length0.314 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
starting_edge_shapeSTRAIGHT
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-STD-171 FINISH NO.5.4.1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
NSN5315-01-139-2733
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 142384 · 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: MIL-STD-171 FINISH NO.5.4.1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
FIRST FLAT LENGTH: 0.528 INCHES NOMINAL IN
•
STARTING EDGE SHAPE: STRAIGHT
•
SECOND FLAT LENGTH: 0.314 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.312 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 FINISH NO.5.4.1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
FIRST FLAT LENGTH0.528 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
SECOND FLAT LENGTH0.314 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
STYLE DESIGNATORSTEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN
OVERALL WIDTH0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
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
2885080Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 142384?
142384 is a KEY,MACHINE.
What parts can replace 142384?
There is 1 known substitute for 142384: 2885080. Substitute compatibility should be verified for your specific system.
What is the NSN for 142384?
142384 is cataloged in the U.S. Government catalog under NSN 5315-01-139-2733. 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.