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PartsTable / COMPONENT / 10121207
10121207 ✓ 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 COMP 410 OVERALL, thickness: 0.022 INCHES NOMINAL IN, hole_diameter: 0.315 INCHES NOMINAL IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM, overall_diameter: 0.480 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-3077, 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
10121207
NSN: 5310-00-209-3077
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL COMP 410 OVERALL
thickness0.022 INCHES NOMINAL IN
hole_diameter0.315 INCHES NOMINAL IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
overall_diameter0.480 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-209-3077
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121207 · 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
•
HARDNESS RATING: 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
•
MATERIAL: STEEL COMP 410 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
HOLE DIAMETER: 0.315 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
THICKNESS: 0.022 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
MATERIALSTEEL COMP 410 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5504 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.315 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
THICKNESS0.022 INCHES NOMINAL IN
OVERALL DIAMETER0.480 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
186593Interchangeable
interchangeable cross-reference
interchangeable
15097-16AND16708Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10121207?
10121207 is a WASHER,FLAT.
What parts can replace 10121207?
There are 2 known substitutes for 10121207: 186593, 15097-16AND16708. Substitute compatibility should be verified for your specific system.
Is 10121207 still available?
10121207 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