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412-045-D2 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

412-045-D2: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include hole_diameter: 12.827 MILLIMETERS NOMINAL MM, overall_diameter: 20.6248 MILLIMETERS NOMINAL MM, special_features: ACETAL HOMOPOLYMER (POLYOXYMETHYLENE POM), center_hole_shape_style: ROUND, part_name_assigned_by_controlling_agency: FLAT WASHER. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-720-5804, 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
412-045-D2
NSN: 5310-01-720-5804
FSC: 5310 — Nuts and Washers
CAGE: 51506 — ACCURATE SCREW MACHINE CORP DIV ACCURATE SCREW MACHINE CORPORATION (USA)
SPECIFICATIONS
hole_diameter12.827 MILLIMETERS NOMINAL MM
overall_diameter20.6248 MILLIMETERS NOMINAL MM
special_featuresACETAL HOMOPOLYMER (POLYOXYMETHYLENE POM)
center_hole_shape_styleROUND
part_name_assigned_by_controlling_agencyFLAT WASHER
NSN5310-01-720-5804
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 412-045-D2 · 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: 20.6248 MILLIMETERS NOMINAL MM
•
COLOR: BLACK OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 12.827 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER20.6248 MILLIMETERS NOMINAL MM
COLORBLACK OVERALL
SPECIAL FEATURESACETAL HOMOPOLYMER (POLYOXYMETHYLENE POM)
PART NAME ASSIGNED BY CONTROLLING AGENCYFLAT WASHER
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER12.827 MILLIMETERS NOMINAL MM
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 412-045-D2?
412-045-D2 is a WASHER,FLAT.
What is the NSN for 412-045-D2?
412-045-D2 is cataloged in the U.S. Government catalog under NSN 5310-01-720-5804. 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.