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Technical Data Sheet
PartsTable / COMPONENT / 11X100
11X100 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.049 INCHES NOMINAL IN, hole_diameter: 0.250 INCHES NOMINAL IN, overall_diameter: 0.562 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-012-0385, 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
11X100
NSN: 5310-00-012-0385
FSC: 5310
CAGE: 19220 — EASTERN CO DIV EBERHARD MANUFACTURING (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.049 INCHES NOMINAL IN
hole_diameter0.250 INCHES NOMINAL IN
overall_diameter0.562 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-012-0385
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11X100 · 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: 0.562 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.250 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.049 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.562 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.250 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.049 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
31628S7Interchangeable
interchangeable cross-reference
interchangeable
7744780Interchangeable
interchangeable cross-reference
interchangeable
120385Interchangeable
interchangeable cross-reference
interchangeable
104-1S12MInterchangeable
interchangeable cross-reference
interchangeable
FFW92Interchangeable
interchangeable cross-reference
interchangeable
MS-120-A-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11X100?
11X100 is a WASHER,FLAT.
What parts can replace 11X100?
There are 10 known substitutes for 11X100: 31628S7, 7744780, 120385 and 7 more. Substitute compatibility should be verified for your specific system.
Is 11X100 still available?
11X100 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026