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CL2FW ✓ 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: STEEL OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.531 INCHES NOMINAL IN, hardness_rating: 56.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM, overall_diameter: 1.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-790-2990, 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
CL2FW
NSN: 5310-00-790-2990
FSC: 5310
CAGE: 99862 — CARR LANE MANUFACTURING CO (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.531 INCHES NOMINAL IN
hardness_rating56.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM
overall_diameter1.125 INCHES NOMINAL IN
features_providedCASEHARDENED
surface_treatmentOXIDE FILM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-790-2990
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CL2FW · 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
•
COLOR: BLACK OVERALL
•
SURFACE TREATMENT: OXIDE FILM OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
OVERALL DIAMETER: 1.125 INCHES NOMINAL IN
•
THICKNESS: 0.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
COLORBLACK OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
OVERALL DIAMETER1.125 INCHES NOMINAL IN
THICKNESS0.125 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
HOLE DIAMETER0.531 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
R26355NInterchangeable
interchangeable cross-reference
interchangeable
MS25036-109Interchangeable
interchangeable cross-reference
interchangeable
16-14 (BLUE)Interchangeable
interchangeable cross-reference
interchangeable
0020616Interchangeable
interchangeable cross-reference
interchangeable
31905Interchangeable
interchangeable cross-reference
interchangeable
J978HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CL2FW?
CL2FW is a WASHER,FLAT.
What parts can replace CL2FW?
There are 10 known substitutes for CL2FW: R26355N, MS25036-109, 16-14 (BLUE) and 7 more. Substitute compatibility should be verified for your specific system.
Is CL2FW still available?
CL2FW 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