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121-04-D-2 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

121-04-D-2: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC ACETAL OVERALL, thickness: 0.046 INCHES NOMINAL IN, hole_diameter: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, overall_diameter: 0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-460-8079, 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
121-04-D-2
NSN: 5310-01-460-8079
FSC: 5310 — Nuts and Washers
CAGE: 07690 — BAE SYSTEMS CONTROLS INC (USA)
SPECIFICATIONS
materialPLASTIC ACETAL OVERALL
thickness0.046 INCHES NOMINAL IN
hole_diameter0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
overall_diameter0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-460-8079
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 121-04-D-2 · 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: 0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
COLOR: BLACK OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: PLASTIC ACETAL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
THICKNESS: 0.046 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
COLORBLACK OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALPLASTIC ACETAL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
THICKNESS0.046 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
406888-01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 121-04-D-2?
121-04-D-2 is a WASHER,FLAT.
What parts can replace 121-04-D-2?
There is 1 known substitute for 121-04-D-2: 406888-01. Substitute compatibility should be verified for your specific system.
What is the NSN for 121-04-D-2?
121-04-D-2 is cataloged in the U.S. Government catalog under NSN 5310-01-460-8079. 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.