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209491 — INSULATOR,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

209491: INSULATOR,PLATE.

The INSULATOR,PLATE is a the manufacturer industrial component. Key specifications include material: GLASS FIBER AND PLASTIC EPOXY OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.320 INCHES NOMINAL IN, overall_width: 3.120 INCHES NOMINAL IN, overall_height: 0.031 INCHES NOMINAL IN, overall_length: 9.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-854-5055, 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
209491
NSN: 5310-00-854-5055
NIINs: 008545055, 013327788
FSC: 5310 — Nuts and Washers
CAGE: 99193 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - PHOENIX (USA)
SPECIFICATIONS
materialGLASS FIBER AND PLASTIC EPOXY OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.320 INCHES NOMINAL IN
overall_width3.120 INCHES NOMINAL IN
overall_height0.031 INCHES NOMINAL IN
overall_length9.250 INCHES NOMINAL IN
recess_diameter0.406 INCHES NOMINAL IN
outside_diameter1.055 INCHES NOMINAL IN
special_features0.062 IN. BY 60 DEGREE CHAMFER ON OD EDGE IN
style_designatorFLAT, RECTANGULAR
material_thickness0.127 INCHES NOMINAL IN
material_document_and_classificationMIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-854-5055
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 209491 · 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
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 1.055 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.127 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.406 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.320 INCHES NOMINAL IN
•
RECESS ANGLE: 90.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER1.055 INCHES NOMINAL IN
MATERIAL THICKNESS0.127 INCHES NOMINAL IN
RECESS DIAMETER0.406 INCHES NOMINAL IN
SPECIAL FEATURES0.062 IN. BY 60 DEGREE CHAMFER ON OD EDGE IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.320 INCHES NOMINAL IN
RECESS ANGLE90.0 DEGREES NOMINAL
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 209491?
209491 is a INSULATOR,PLATE.
What is the NSN for 209491?
209491 is cataloged in the U.S. Government catalog under NSN 5310-00-854-5055. 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.