PartsTable
Technical Data Sheet
Download PDF

65A131B66-1 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

65A131B66-1: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, thickness: 0.021 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN, hole_diameter: 0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN, overall_diameter: 0.203 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-168-7253, 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
65A131B66-1
NSN: 5310-01-168-7253
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
thickness0.021 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
hole_diameter0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
overall_diameter0.203 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-168-7253
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 65A131B66-1 · 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: 0.203 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
COLOR: BLACK OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.203 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
COLORBLACK OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.119 INCHES MINIMUM AND 0.124 INCHES MAXIMUM IN
THICKNESS0.021 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
639AS6063Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 65A131B66-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 65A131B66-1?
65A131B66-1 is a WASHER,FLAT.
What parts can replace 65A131B66-1?
There is 1 known substitute for 65A131B66-1: 639AS6063. Substitute compatibility should be verified for your specific system.
What is the NSN for 65A131B66-1?
65A131B66-1 is cataloged in the U.S. Government catalog under NSN 5310-01-168-7253. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 65A131B66-1

✓ 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.