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PartsTable / COMPONENT / X1026T4
X1026T4 ✓ 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 ALLOY 111 OVERALL, thickness: 0.062 INCHES NOMINAL IN, hole_diameter: 0.656 INCHES NOMINAL IN, overall_diameter: 0.875 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 5310-00-354-5927, 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
X1026T4
NSN: 5310-00-354-5927
FSC: 5310
CAGE: 30760 — INGERSOLL RAND CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY 111 OVERALL
thickness0.062 INCHES NOMINAL IN
hole_diameter0.656 INCHES NOMINAL IN
overall_diameter0.875 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-C-576 FED SPEC 1ST MATERIAL RESPONSE AND SAE ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5310-00-354-5927
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: X1026T4 · 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
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.062 INCHES NOMINAL IN
•
MATERIAL: COPPER OVERALL
•
HOLE DIAMETER: 0.656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.875 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.062 INCHES NOMINAL IN
MATERIALCOPPER OVERALL
HOLE DIAMETER0.656 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
FF-B-187/1Interchangeable
interchangeable cross-reference
interchangeable
687Interchangeable
interchangeable cross-reference
interchangeable
49486Interchangeable
interchangeable cross-reference
interchangeable
6S7Interchangeable
interchangeable cross-reference
interchangeable
MILE1Interchangeable
interchangeable cross-reference
interchangeable
WW-P-460Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X1026T4?
X1026T4 is a WASHER,FLAT.
What parts can replace X1026T4?
There are 23 known substitutes for X1026T4: FF-B-187/1, 687, 49486 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for X1026T4?
X1026T4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-354-5927. 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