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73563-2 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

73563-2: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, flat_height: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, overall_width: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN, overall_height: 0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, overall_length: 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN, style_designator: STEPPED. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-676-8902, 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
73563-2
NSN: 5315-00-676-8902
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 1RDZ1 — BE AEROSPACE CONSUMABLES MANAGEMENT DBA CONSUMABLES SOLUTIONS DIV CONSUMABLES SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
flat_height0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
overall_width0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
overall_height0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
overall_length0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
style_designatorSTEPPED
first_flat_length0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
second_flat_length0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
starting_edge_shapeSTRAIGHT
material_document_and_classificationMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-676-8902
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 73563-2 · 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: 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
•
STARTING EDGE SHAPE: STRAIGHT
•
SECOND FLAT LENGTH: 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: STEPPED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
FIRST FLAT LENGTH0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
STARTING EDGE SHAPESTRAIGHT
SECOND FLAT LENGTH0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
STYLE DESIGNATORSTEPPED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
OVERALL WIDTH0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 302 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

No substitute or cross-reference records for this part.

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 73563-2?
73563-2 is a KEY,MACHINE.
What is the NSN for 73563-2?
73563-2 is cataloged in the U.S. Government catalog under NSN 5315-00-676-8902. 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.