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170664 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

170664: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include special_features: KIT TIE-DOWN MOBILITY TRAILER VAN M105 TRAILER PECK & HALE 4613/TK-1. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-486-2507, 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
170664
NSN: 5310-00-486-2507
NIINs: 004862507, 014862507
FSC: 5310 — Nuts and Washers
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
special_featuresKIT TIE-DOWN MOBILITY TRAILER VAN M105 TRAILER PECK & HALE 4613/TK-1
NSN5310-00-486-2507
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 170664 · 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: 1.235 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
•
THICKNESS: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.235 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.406 INCHES NOMINAL IN
THICKNESS0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
CU170664Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 170664?
170664 is a WASHER,FLAT.
What parts can replace 170664?
There is 1 known substitute for 170664: CU170664. Substitute compatibility should be verified for your specific system.
What is the NSN for 170664?
170664 is cataloged in the U.S. Government catalog under NSN 5310-00-486-2507. 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.