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A5-4273 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A5-4273: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.875 INCHES NOMINAL IN, overall_height: 0.188 INCHES NOMINAL IN, overall_length: 1.250 INCHES NOMINAL IN, style_designator: PLAIN, mounting_hole_depth: 0.188 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-459-4646, 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
A5-4273
NSN: 5315-00-459-4646
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 55102 — CONTINENTAL EMSCO CO SKAGIT PRODUCTS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.875 INCHES NOMINAL IN
overall_height0.188 INCHES NOMINAL IN
overall_length1.250 INCHES NOMINAL IN
style_designatorPLAIN
mounting_hole_depth0.188 INCHES NOMINAL IN
starting_edge_shapeSTRAIGHT
mounting_hole_diameter0.406 INCHES NOMINAL IN
mounting_hole_type_and_quantity1 PLAIN
distance_from_mounting_hole_center_to_end0.516 INCHES NOMINAL IN
NSN5315-00-459-4646
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A5-4273 · 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
•
MOUNTING HOLE TYPE AND QUANTITY: 1 PLAIN
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MOUNTING HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
DISTANCE FROM MOUNTING HOLE CENTER TO END: 0.516 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.188 INCHES NOMINAL IN
MOUNTING HOLE TYPE AND QUANTITY1 PLAIN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MOUNTING HOLE DIAMETER0.406 INCHES NOMINAL IN
OVERALL LENGTH1.250 INCHES NOMINAL IN
OVERALL WIDTH0.875 INCHES NOMINAL IN
DISTANCE FROM MOUNTING HOLE CENTER TO END0.516 INCHES NOMINAL IN
MOUNTING HOLE DEPTH0.188 INCHES NOMINAL IN
MATERIALSTEEL 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 A5-4273?
A5-4273 is a KEY,MACHINE.
What is the NSN for A5-4273?
A5-4273 is cataloged in the U.S. Government catalog under NSN 5315-00-459-4646. 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.