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5255044A — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5255044A: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OVERALL, overall_width: 0.250 INCHES NOMINAL IN, overall_height: 0.188 INCHES NOMINAL IN, overall_length: 1.875 INCHES NOMINAL IN, style_designator: PLAIN, starting_edge_shape: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-271-4211, 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
5255044A
NSN: 5315-00-271-4211
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OVERALL
overall_width0.250 INCHES NOMINAL IN
overall_height0.188 INCHES NOMINAL IN
overall_length1.875 INCHES NOMINAL IN
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
material_document_and_classificationMIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-271-4211
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5255044A · 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: STRAIGHT
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: NICKEL ALLOY 400 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.188 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-N-894 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH1.875 INCHES NOMINAL IN
OVERALL WIDTH0.250 INCHES NOMINAL IN
MATERIALNICKEL ALLOY 400 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 5
231-101PC16Reference document
Same NSN cross-reference
Reference document — Secondary reference
72-23310-055Reference document
Same NSN cross-reference
Reference document — Secondary reference
230-95PC16Reference document
Same NSN cross-reference
Reference document — Secondary reference
72-2331-055Reference document
Same NSN cross-reference
Reference document — Secondary reference
228-63PC16Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5255044A?
5255044A is a KEY,MACHINE.
What parts can replace 5255044A?
There are 5 known substitutes for 5255044A: 231-101PC16, 72-23310-055, 230-95PC16 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5255044A?
5255044A is cataloged in the U.S. Government catalog under NSN 5315-00-271-4211. 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.