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10109958 ✓ 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 color: BLACK OVERALL, material: RUBBER SILICONE CLASS Q OVERALL, thickness: 0.047 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN, hole_diameter: 0.190 INCHES NOMINAL IN, hardness_rating: 70.0 DUROMETER MINIMUM AND 80.0 DUROMETER MAXIMUM, overall_diameter: 0.280 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-168-4488, 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
10109958
NSN: 5310-01-168-4488
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
colorBLACK OVERALL
materialRUBBER SILICONE CLASS Q OVERALL
thickness0.047 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
hole_diameter0.190 INCHES NOMINAL IN
hardness_rating70.0 DUROMETER MINIMUM AND 80.0 DUROMETER MAXIMUM
overall_diameter0.280 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-168-4488
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10109958 · 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
•
HOLE DIAMETER: 0.190 INCHES NOMINAL IN
•
COLOR: BLACK OVERALL
•
MATERIAL: RUBBER SILICONE CLASS Q OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THICKNESS: 0.047 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.190 INCHES NOMINAL IN
COLORBLACK OVERALL
MATERIALRUBBER SILICONE CLASS Q OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THICKNESS0.047 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
HARDNESS RATING70.0 DUROMETER MINIMUM AND 80.0 DUROMETER MAXIMUM
OVERALL DIAMETER0.280 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AC2517E1Interchangeable
interchangeable cross-reference
interchangeable
37C311065P102Interchangeable
interchangeable cross-reference
interchangeable
738C156P1Interchangeable
interchangeable cross-reference
interchangeable
52058-1Interchangeable
interchangeable cross-reference
interchangeable
13226E8688Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10109958?
10109958 is a WASHER,FLAT.
What parts can replace 10109958?
There are 5 known substitutes for 10109958: AC2517E1, 37C311065P102, 738C156P1 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10109958?
10109958 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-168-4488. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026