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43304PC5 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

43304PC5: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, thickness: 0.00625 INCHES MINIMUM AND 0.00775 INCHES MAXIMUM IN, hole_diameter: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN, overall_diameter: 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-661-3156, 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
43304PC5
NSN: 5310-00-661-3156
FSC: 5310 — Nuts and Washers
CAGE: 36090 — LOCKHEED MARTIN LIBRASCOPE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
thickness0.00625 INCHES MINIMUM AND 0.00775 INCHES MAXIMUM IN
hole_diameter0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
overall_diameter0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-661-3156
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 43304PC5 · 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: 0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 302 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.188 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTPASSIVATE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 302 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN
THICKNESS0.00625 INCHES MINIMUM AND 0.00775 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
G68-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 43304PC5?
43304PC5 is a WASHER,FLAT.
What parts can replace 43304PC5?
There is 1 known substitute for 43304PC5: G68-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 43304PC5?
43304PC5 is cataloged in the U.S. Government catalog under NSN 5310-00-661-3156. 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.