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1330-1656 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1330-1656: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.380 INCHES NOMINAL IN, hole_diameter: 0.766 INCHES NOMINAL IN, overall_diameter: 2.100 INCHES NOMINAL IN, special_features: MATERIAL ASTM A572 GR 50, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-669-0182, 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
1330-1656
NSN: 5310-01-669-0182
FSC: 5310 — Nuts and Washers
CAGE: 2W888 — MCT INDUSTRIES, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.380 INCHES NOMINAL IN
hole_diameter0.766 INCHES NOMINAL IN
overall_diameter2.100 INCHES NOMINAL IN
special_featuresMATERIAL ASTM A572 GR 50
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationETI-9/E A/C E
cross-sectional_shape_styleBLANK RECTANGULAR
part_name_assigned_by_controlling_agencyLATERAL LIMIT WASHER
NSN5310-01-669-0182
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1330-1656 · 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: 2.100 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: BLANK RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.100 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEBLANK RECTANGULAR
SPECIAL FEATURESMATERIAL ASTM A572 GR 50
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYLATERAL LIMIT WASHER
END ITEM IDENTIFICATIONETI-9/E A/C E
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.766 INCHES NOMINAL IN
THICKNESS0.380 INCHES NOMINAL 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1330-1656?
1330-1656 is a WASHER,FLAT.
What is the NSN for 1330-1656?
1330-1656 is cataloged in the U.S. Government catalog under NSN 5310-01-669-0182. 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.