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FD3121 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

FD3121: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 2.0 MILLIMETERS NOMINAL MM, hole_diameter: 20.0 MILLIMETERS NOMINAL MM, overall_diameter: 38.0 MILLIMETERS NOMINAL MM, surface_treatment: ZINC OVERALL, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-587-8249, 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
FD3121
NSN: 5310-01-587-8249
NIINs: 015878249, 016522516
FSC: 5310 — Nuts and Washers
CAGE: 1N5S7 — CRITICAL SOLUTIONS INTERNATIONAL, LLC (USA)
SPECIFICATIONS
thickness2.0 MILLIMETERS NOMINAL MM
hole_diameter20.0 MILLIMETERS NOMINAL MM
overall_diameter38.0 MILLIMETERS NOMINAL MM
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification2330-01-547-0698 TRAILER, MINE DETONATOR
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER, FLAT, SPECIAL
NSN5310-01-587-8249
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FD3121 · 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: 38.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 20.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER38.0 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT, SPECIAL
END ITEM IDENTIFICATION2330-01-547-0698 TRAILER, MINE DETONATOR
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER20.0 MILLIMETERS NOMINAL MM
THICKNESS2.0 MILLIMETERS NOMINAL MM
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 FD3121?
FD3121 is a WASHER,FLAT.
What is the NSN for FD3121?
FD3121 is cataloged in the U.S. Government catalog under NSN 5310-01-587-8249. This indicates validated use in U.S. government and defense supply chains.
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