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MS20066-76 — KEY,MACHINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS20066-76: KEY,MACHINE.

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include overall_width: 0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN, overall_height: 0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN, overall_length: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, style_designator: PLAIN, surface_treatment: PASSIVATE OVERALL, starting_edge_shape: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-105-4154, 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
MS20066-76
NSN: 5315-00-105-4154
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
overall_width0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
overall_height0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
overall_length0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
style_designatorPLAIN
surface_treatmentPASSIVATE OVERALL
starting_edge_shapeSTRAIGHT
nondefinitive_spec/std_data2 TYPE AND 1 STYLE AND A GRADE
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN5315-00-105-4154
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS20066-76 · 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: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND A GRADE
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OVERALL LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
OVERALL WIDTH0.125 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND A GRADE
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 403 OR STEEL COMP 405 OR STEEL COMP 410 OR STEEL COMP 446 OR STEEL COMP 414 OR STEEL COMP 416SE OR STEEL COMP 416 OR STEEL COMP 420 OR STEEL COMP 430 OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 431 OR STEEL COMP 440A OR STEEL COMP 440B OR STEEL COMP 440C OR STEEL COMP 442 OVERALL A
SUBSTITUTES & CROSS-REFERENCES 2
00K220Reference document
Same NSN cross-reference
Reference document — Identification reference
86394-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS20066-76?
MS20066-76 is a KEY,MACHINE.
What parts can replace MS20066-76?
There are 2 known substitutes for MS20066-76: 00K220, 86394-2. Substitute compatibility should be verified for your specific system.
What is the NSN for MS20066-76?
MS20066-76 is cataloged in the U.S. Government catalog under NSN 5315-00-105-4154. 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.