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PartsTable / COMPONENT / 100A10-26W
100A10-26W ✓ 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: COPPER OVERALL, thickness: 0.1875 INCHES NOMINAL IN, hole_diameter: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, overall_diameter: 1.1875 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-281-3555, 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
100A10-26W
NSN: 5310-00-281-3555
FSC: 5310
CAGE: 43491 — GENERAL SIGNAL CORP (USA)
SPECIFICATIONS
materialCOPPER OVERALL
thickness0.1875 INCHES NOMINAL IN
hole_diameter0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
overall_diameter1.1875 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_dataA TYPE AND 1 GRADE AND F CLASS
departure_from_cited_designatorAS MODIFIED BY OD AND THK
material_document_and_classificationQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-281-3555
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 100A10-26W · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.1875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 1.1875 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
•
NONDEFINITIVE SPEC/STD DATA: A TYPE AND 1 GRADE AND F CLASS
•
MATERIAL: COPPER OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.1875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER1.1875 INCHES NOMINAL IN
HOLE DIAMETER0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAA TYPE AND 1 GRADE AND F CLASS
MATERIALCOPPER OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-576 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OD AND THK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
MS15795-541Interchangeable
interchangeable cross-reference
interchangeable
FFW92Interchangeable
interchangeable cross-reference
interchangeable
SP4698Interchangeable
interchangeable cross-reference
interchangeable
FFW92TYPEAGRADE1CLASSFInterchangeable
interchangeable cross-reference
interchangeable
51176PC9Interchangeable
interchangeable cross-reference
interchangeable
116103Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 100A10-26W?
100A10-26W is a WASHER,FLAT.
What parts can replace 100A10-26W?
There are 16 known substitutes for 100A10-26W: MS15795-541, FFW92, SP4698 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 100A10-26W?
100A10-26W is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-281-3555. 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