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91117A216 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91117A216: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, hole_diameter: 0.344 INCHES NOMINAL IN, overall_diameter: 2.000 INCHES NOMINAL IN, special_features: ITEM MADE FOR 0.312 OR 5/16 INCH SCREW SIZE IN, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-656-2097, 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
91117A216
NSN: 5310-01-656-2097
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
hole_diameter0.344 INCHES NOMINAL IN
overall_diameter2.000 INCHES NOMINAL IN
special_featuresITEM MADE FOR 0.312 OR 5/16 INCH SCREW SIZE IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification4220-01-618-6266
cross-sectional_shape_styleBLANK RECTANGULAR
part_name_assigned_by_controlling_agencyOVER SIZED WASHER
NSN5310-01-656-2097
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91117A216 · 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
•
OVERALL DIAMETER: 2.000 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: BLANK RECTANGULAR
•
SURFACE TREATMENT: ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEBLANK RECTANGULAR
SPECIAL FEATURESITEM MADE FOR 0.312 OR 5/16 INCH SCREW SIZE IN
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYOVER SIZED WASHER
END ITEM IDENTIFICATION4220-01-618-6266
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.344 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
19E2401086Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 91117A216?
91117A216 is a WASHER,FLAT.
What parts can replace 91117A216?
There is 1 known substitute for 91117A216: 19E2401086. Substitute compatibility should be verified for your specific system.
What is the NSN for 91117A216?
91117A216 is cataloged in the U.S. Government catalog under NSN 5310-01-656-2097. 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.