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AT1018197 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

AT1018197: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.0319 INCHES NOMINAL IN, hole_diameter: 0.317 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN, overall_diameter: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-262-3006, 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
AT1018197
NSN: 5310-00-262-3006
FSC: 5310 — Nuts and Washers
CAGE: 23705 — FRUEHAUF CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.0319 INCHES NOMINAL IN
hole_diameter0.317 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
overall_diameter0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-262-3006
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AT1018197 · 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
•
OVERALL DIAMETER: 0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: COPPER ALLOY OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.317 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
•
THICKNESS: 0.0319 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.493 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALCOPPER ALLOY OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.317 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN
THICKNESS0.0319 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
1018197RReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AT1018197?
AT1018197 is a WASHER,FLAT.
What parts can replace AT1018197?
There is 1 known substitute for AT1018197: 1018197R. Substitute compatibility should be verified for your specific system.
What is the NSN for AT1018197?
AT1018197 is cataloged in the U.S. Government catalog under NSN 5310-00-262-3006. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.