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5N4501 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5N4501: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_width: 0.3135 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN, overall_height: 0.2720 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN, overall_length: 1.102 INCHES NOMINAL IN, style_designator: PLAIN, starting_edge_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-208-0375, 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
5N4501
NSN: 5315-01-208-0375
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_width0.3135 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
overall_height0.2720 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN
overall_length1.102 INCHES NOMINAL IN
style_designatorPLAIN
starting_edge_shapeROUND
starting_edge_radius0.157 INCHES NOMINAL IN
material_document_and_classificationBRITISH STD LB4C NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-01-208-0375
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5N4501 · 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
•
STARTING EDGE SHAPE: ROUND
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: BRITISH STD LB4C NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STARTING EDGE RADIUS: 0.157 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.2720 INCHES MINIMUM AND 0.2756 INCHES MAXIMUM IN
STARTING EDGE SHAPEROUND
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONBRITISH STD LB4C NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.102 INCHES NOMINAL IN
OVERALL WIDTH0.3135 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN
STARTING EDGE RADIUS0.157 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 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 5N4501?
5N4501 is a KEY,MACHINE.
What is the NSN for 5N4501?
5N4501 is cataloged in the U.S. Government catalog under NSN 5315-01-208-0375. 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.